united states department of the interior … · organic geochemistry, lithology, and paleontology...

UNITED STATESDEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

ORGANIC GEOCHEMISTRY, LITHOLOGY, AND PALEONTOLOGY OF

TERTIARY AND MESOZOIC ROCKS FROM WELLS ON THE ALASKA PENINSULA

By

Hugh McLean

U.S. Geological Survey345 Middlefield Road

Menlo Park, California 94025

OPEN-FILE REPORT 77-813

This report is preliminary and has not been edited or reviewed for conformity with Geological Survey standards and nomenclature

Menlo Park, California November 1977

Saturate hydrocarbon analyses ............... 52

13. Visual kerogen assessment worksheet ............ 54

14. Vitrinite reflectance summary ............... 55

Appendix 3. Analytical data on maturity of coal samples .......... 56

Appendix 4. Thin section descriptions ................... 58

Appendix 5. Paleontology and palynology--sample lists ........... 60

FIGURES

Figure 1. Alaska Peninsula index map with Bristol Bay well localities ... 3

Figure 2a and 2b. Stratigraphic cross section of Bristol Bay region of 11 Alaska Peninsula ........................ 12

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ORGANIC GEOCHEMISTRY, LITHOLOGY, AND PALEONTOLOGY OF TERTIARY AND MESOZOIC ROCKS FROM WELLS ON THE ALASKA PENINSULA

By

Hugh McLean U.S. Geological Survey345 Middlefield Road

Menlo Park, California

ABSTRACT

Core chips and drill cuttings from eight of the nine wells drilled along

the Bering Sea lowlands of the Alaska Peninsula were subjected to lithologic

and paleontologic analyses. Results suggest that at least locally, sedimentary

rocks of Tertiary age contain oil and gas source and reservoir rocks capable

of generating and accumulating liquid and gas hydrocarbons.

Paleogene strata rich in organic carbon are immature. However, strata in

offshore basins to the north and south may have been subjected to a more pro

ductive thermal environment. Total organic carbon content of fine grained

Neogene strata appears to be significantly lower than in Paleogene rocks, pos

sibly reflecting nonmarine or brackish water environments of deposition. Neogene

sandstone beds locally yield high values of porosity and permeability to depths

of about 8,000 feet (2,439 m). Below this depth, reservoir potential rapidly

declines.

The General Petroleum, Great Basins No. 1 well drilled along the shore of

Bristol Bay reached granitic rocks. Other wells drilled closer to the axis of

the present volcanic arc indicate that both Tertiary and Mesozoic sedimentary

rocks have been intruded by dikes and sills of andesite and basalt. Although

the Alaska Peninsula has been the locus of igneous activity throughout much of

Mesozoic and Tertiary time, thermal maturity indicators such as vitrinite re

flectance and coal rank suggest, that on a regional scale, sedimentary rocks

have not been subjected to abnormally high geothermal gradients.

INTRODUCTION

Core chips and washed cuttings from several wells dri.lled on the Alaska

Peninsula were studied to determine the petroleum potential, lithology, and

age relations of subsurface rocks on the peninsula and in adjacent offshore

sedimentary basins. The Bristol basin is to the north and the Shumagin Shelf

is to the south. This study reports on the paleontology, and lithology of

rock samples from wells drilled mainly along the Bristol Bay coastal lowlands

from Lake Becharof to the Black Hills (Fig. 1).

The first part of the study investigated the oil and gas source rock

potential of this area. Three wells were selected for detailed source rock

analyses, but cuttings from the AMOCO Cathedral River No. 1 well were found

to be contaminated from 8,600 feet to T.D. with a petroleum based mud additive

that could not be removed. The contaminated part of the well was eliminated

from the study. Supplemental data (thermal analysis/pyrolysis-FID) on coal

and black shale from five wells was provided by George Claypool of the U.S.

Geological Survey in Denver, Colorado.

The second part of the study involved petrographic examination of sel

ected intervals in seven wells. Fifty-one grain mount thin sections were made

where sandstone or crystalline rocks were observed in the washed cuttings.

Eight thin sections of sandstone from selected core chips were cut for petro

graphic examination. Thin sections were studied to determine sandstone texture,

composition, and degree of alteration, as these parameters can be helpful in

predicting reservoir characteristics. The effects of intrusive igneous activity

on sedimentary rocks were noted to determine the extent to which petroleum

potential has been affected by contact metamorphism.

The third part of the study deals with paleontology, principally foram-

inifera, and the palynology of carbonaceous intervals. It was hoped that

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the microfauna would provide additional information on the ages of rocks which

now rely mainly on reconnaissance field work by Burk (1965) and a stratigraphic

section published by Brockway and others (1975). Unfortunately, fossil recovery

was poor, probably because only washed cuttings were available from most of the

wells. Better microfaunal control might be possible if outcrop or core samples

were available. In Tertiary rocks recovery of palynomorphs was more encouraging

and age calls were possible in several sequences.

ACKNOWLEDGMENTS

The study was made possible through the cooperation and financial assistance

of the General Crude Oil Company, Houston, Texas and coordinated by Dr. Claude

C. Rust. Additional geochemical data were provided by George E. Claypool, U.S.

Geological Survey, Denver, Colorado. Foraminifera were identified by Kristen

McDougall, and palynomorphs by Jack A. Wolfe, both of the U.S. Geological Survey,

Menlo Park, California. Paleontological samples were prepared by Milton Randall.

GEOCHEMISTRY

Oil and gas source rock analyses of washed cuttings were run on two wells

from the Alaska Peninsula. Cuttings from the General Petroleum Corporation

Great Basins No. 1 (2-27S-49W) were examined from a depth of 1,300 to 11,080

feet (total depth). Material from the Pan American Hoodoo Lake No. 2 well (35-

50S-76W) was analyzed between 227 and 11,243 feet (T.D.).

At GeoChem Laboratories, Inc. in Houston, Texas, cuttings were hand-picked

by a geologist and a small sample (approximately 5 grams) was collected at 150

feet intervals. Each sample was analyzed for organic carbon content. Based

on these results, various single, or composite samples were selected for more

detailed study. The analytical data for this study are documented in Appendix

1 for the Great Basin well and Appendix 2 for the Hoodoo Lake well.

Summary of Results

General Petroleum Corporation, Great Basins No. 1: The strati graphic

intervals penetrated by the Great Basins No. 1 are as follows: (Data from

Brockway and others, 1975).

Geochemical Age Formation Formation Top Subunit

Pliocene Milky River ?

Miocene Bear Lake 2,110 feet al

Oligocene Stepovak 5,600 feet a2

Jurassic Granitic basement 10,970 feet

Total Depth 11,080 + feet

In terms of organic richness, source rock maturity, type of organic matter,

and lithology, the Bear Lake and Stepovak formations can be summarized in the

following manner. The Bear Lake Formation consists of tuffaceous shale, car

bonaceous shale, and coal, with secondary amounts of siltstone and sandstone.

Organic carbon averages 13%, extractable bitumen averages 5,000 ppm, and kerogen

is predominantly woody with a minor amount of amorphous-sapropel. The high ex-

tractable bitumen content with a correspondingly low hydrocarbon fraction is

interpreted to reflect the coal-rich and/or woody character of the organic

material in the formation.

Vitrinite reflectance values (R ) average 0.29%,suggesting that the Bear

Lake Formation is immature. Significant amounts of steranes and terpanes, a

pronounced odd carbon preference in the Coo~C?o normal paraffins, and a low

paraffin-naphthene/aromatic hydrocarbon ratio (average 0.55) also suggest im

mature source rock.

Source rocks in the underlying Stepovak Formation are characterized by

an average organic carbon content of 11%, a mean value of extractable bitumen

6,600 ppm, and a predominance of woody kerogen with minor amounts of herbareous

kerogen.

Maturation indices suggest immature source rocks. R averages 0.51% and

steranes and terpanes are present in significant amounts. Odd-even carbon

ratios and paraffin-naphthene/aromatic hydrocarbon ratios are similar to those

reported in the overlying Bear Lake Formation.

The hydrocarbon potential of the Bear Lake and Stepovak formations are

similar. Organic carbon is abundant but immature. Presumably, if source rocks

similar to those in the Great Basins No. 1 well were present in deeper offshore

parts of Bristol basin, probably at depths of 15,000 feet or greater, then

chances of petroleum generation would be greatly improved because of higher

temperatures.

Pan Am-Socal, Hoodoo Lake No. 2: The strati graphic interval penetrated by the

Hoodoo Lake No. 2 well includes seven geologic formations. Specific tops of

the formations reported by Brockway and others,(1975) areas follows:

Age

Pliocene

Miocene

Oligocene

Eocene

Upper Cretaceous

Lower Cretaceous

Lower Cretaceous- Upper Jurassic

Formation

Milky River

Bear Lake

Stepovak

Tolstoi

Chignik

Herendeen Limestone

Staniukovich

Total Depth

Formation top

?

I,000 ± feet

2,160 feet

5,780 feet

7,700 feet

8,650 feet

9,670 feet

II,243 feet

Geochemical Subunit

A 200- 5,500 feet

B 5,500- 7,700 feet

C 7,700-11,243 feet

The stratigraphic section of the Hoodoo Lake No. 2 well can be subdivided

into 3 subunits based on percentage of total organic carbon, type of kerogen,

abundance and composition of the extractable bitumen. The zonation is inde

pendent of formation tops and is as follows:

Subunit A 200 jf to 5,500 +_ feet

Subunit B 5,500 ± to 7,700 ± feet

Subunit C 7,700 +_ to 11,243 ± feet (Total Depth)

Subunit A (200 _+to 5,500 ± feet) roughly correlates with the Milky River,

Bear Lake, and Stepovak formations. The section comprises light colored clay-

stone, shale, siltstone and sandstone. Near the base, the light colored rocks

grade downward into darker strata higher in organic content. Geochemically,

subunit A is characterized by generally low organic carbon contents (average

0.26%) and low values of extractable bitumen (average 36 ppm). Kerogen is pre

dominantly woody with lesser amounts of amorphous-sapropel and coal. Maturity

indices indicate the sequence is immature. R averages 0.65%.

Compared with the organic richness of the Bear Lake and Stepovak formations

in the Great Basins No. 1 well, subunit A has little potential of generating

substantial quantities of petroleum.

Subunit B occurs within the Tolstoi Formation of Eocene age. The section

consists of carbonaceous, dark gray to black siltstone, shale, and mudstone

with minor thicknesses of coal. Zone B is characterized by high organic carbon

content (average 9.69%), a moderate amount of extractable bitumen (average 469

ppm) and an average hydrocarbon fraction of 225 ppm. The kerogen type is pre

dominantly woody with some accessory amounts of amorphous-sapropel.

Maturity indicators in subunit B suggest that the rocks are mature. Vit-

rinite reflectance values average 1.15%. Other indicators include an absence

of any apparent odd carbon dominance in the Cp2~^33 norma ^ paraffins, ancl a

paraffin-naphthene (P-N) hydrocarbon curve skewed toward more mature C-ic-Cp?

hydrocarbons. Whether or not a significant amount of petroleum has been gen

erated and entrapped in the local area is problematic.

Subunit C includes the Chignik Formation (Upper Cretaceous), Herendeen

Limestone (Upper Jurassic-Lower Cretaceous), and Staniukovich Formation (Upper

Jurassic). Strata in subunit C include sandstone, conglomerate, carbonaceous

shale, and limestone, all locally cut by intrusive rocks. This zone is char

acterized by a variable organic carbon content averaging 4%,by low values of

extractable bitumen (average 41 ppm),and by a low hydrocarbon fraction averaging

about 16 ppm. Kerogen type includes wood and coal with a minor constituent of

amorphous-sapropel.

Analyses indicate that organic matter in subunit C is mature. R values

average 1.76%, and an odd carbon preference index is apparently absent. Also,

hydrocarbons in the C-ic-Cp? range are more common. The woody-coaly character

of subunit C organic matter suggests that these rocks have not generated liquid

hydrocarbons and very little gas. The extent to which nearby intrusive bodies

have affected maturity and reservoir rock properties is unknown.

AMOCO, Cathedral River No. 1: A third well, the AMOCO Cathedral River No. 1

(Sec. 29-51S-83W) with a total depth of 14,300 feet, was included in the source

rock and maturity study. Formation tops reported in the well history released

by AMOCO are as follows:Geochemical

Age Formation Formation Tops Subunit

Upper Jurassic Naknek Fm. surface

Middle Jurassic Shelikof Fm. 3,600 feet 0-8,600 feet

Lower Jurassic Kialagvik Fm. 10,240 feet

Lower Jurassic 11,980 feet 8,600 feet

Triassic 14,200 feet

8

Due to contamination (gilsonite? was added to the drilling mud) reliable

data could only be obtained from samples collected above 8,600 feet. Only the

percentage of organic carbon was measured on samples from 50 + feet to T.D.

Percentage of organic carbon between 50 +_ and 8,600 feet is low, averaging

0.20%. Although contamination was present from 8,600 +_ to 14,300 +_ feet, per

centages of organic carbon remained low, averaging 0.68%.

Detailed analyses of six samples selected between 12,400 and 13,650 feet

were made to determine the type of mud contaminant, and whether or not the

contamination could be washed from samples to permit further work. It was

concluded that the contaminant could not be washed from the samples and addi

tional analyses were suspended.

Thermal Analyses of Coal and Black Shale

Twenty hand picked samples of coal and black shale were analyzed from five

wells to determine coal rank and level of organic maturity. Results of thermal

analysis and pyrolysis-FID measurements are listed in tabular form in Appendix

3. The following observations were made by George E. Claypool, Research Chemist

with the Branch of Oil and Gas Resources, U.S. Geological Survey, Denver, Colo

rado: (1) In the Pan Am Hoodoo Lake No. 1 well the samples are immature through

out; coals are lignite rank above 5,000 feet, and subbituminous below, (2) the

Pan Am Hoodoo Lake No. 2 coal samples are mature, ranging from medium to low-

volatile bituminous rank. The two Hoodoo Lake wells are separated by an east-

west trending fault with several thousand feet of vertical displacement. The

north side has moved down with respect to the south side, (3) the Pan Am David

River 1-A has immature low rank (subbituminous) coal at 4,250 and 7,230 feet,

and mature high-volatile to low-volatile bituminous coals between 8,500 and

10,250 feet, (4) the single sample from the Cities Service Painter Creek well

(1,018-1,019 feet) is a mature, medium-volatile bituminous coak, (5) samples

from the AMOCO Cathedral Rive No. 1 well are contaminated with gilsonite,

but otherwise appear to be mature coals of high-volatile bituminous rank.

LITHOLOGY

Washed cuttings from several wells were examined to determine depths of

major changes in lithology and to correlate the lithologies of the cuttings

with the published strati graphic cross section of Brockway and others (1975).

Selected intervals containing sandstone and siltstone were sampled for grain

mount thin section petrography. Brief lithologic descriptions of grain~mount

and core chip thin sections are included in Appendix 4.

The following summary discusses the major rock types observed in seven

Alaska Peninsula wells. In some wells, good correlations exist between pub

lished formation boundaries and lithologic changes observed in cuttings. In

other cases however, there appears to be little or no correlation. General

strati graphic relations are shown in Figure 2.

Mesozoic Rocks

Sedimentary rocks of Mesozoic age were drilled in only three wells out

side of the Wide Bay area on the Alaska Peninsula. The lithology of each

well will be discussed below on a well-by-well basis.

AMOCO Cathedral River No. 1: The oldest rocks drilled south of Wide Bay on the

Alaska Peninsula occur in the AMOCO Cathedral River No. 1 well that spudded in

the Upper Jurassic Naknek Formation and reached total depth in Triassic age

rocks. These rocks are calcareous arkosic sandstone interbedded with carbon

aceous siltstone, and fine grained calcarenite. The Triassic age is apparently

based on a radiolarian fauna. Lithologies studied in thin section agree reason-

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ably well with formation tops reported in the well history. However, arkosic

sandstone similar to that of the Naknek Formation was observed at 5,500 feet,

considerably deeper than the base of the formation reported in the well history

at 3,598 feet.

Pan American-David River No. 1-A: Published data on the age of the rocks in

the Pan American-David River No. 1-A well conflicts with palynological ages

presented herein (see Appendix 5). Palynomorphs from 3,270 to 11,300 feet

suggest an early to middle Eocene age, whereas Brockway and others (1975) list

the following formation tops:

Brockway andothers (1975) This report

Bear Lake Formation (Miocene) 2,430 feet

Stepovak Formation (Oligocene) 4,400 feet 3,200 feet

Tolstoi Formation (Eocene) 7,240 feet

Chignik Formation (Upper Cret.) 12,200 feet 11,300 feet

No change in lithology of cuttings was noted at 4,400 feet although coal con

tent increases in the cuttings downward in the section between 3,500 and 4,400

feet. At a depth of 7,200 feet arkosic sandstone is interbedded with carbon

aceous siltstone. A major change in lithology occurs at 11,640 feet where

chert bearing arkosic sandstone of probable Upper Cretaceous age becomes abun

dant. Sandstone of similar composition occurs in the Chignik Formation, drilled

by the Pan American Hoodoo Lake No. 2 well and in the Gulf Sandy River well

between 13,003 and 13,110 feet in rocks of uncertain age.

The David River 1-A well contains volcanic derived siltstone and sandstone

with thin coal stringers from about 2,540 feet down to 11,640 feet where early

to middle Eocene strata appear to either unconformably overlie, or be in fault

13

contact with arkosic sandstone and mudstone of the Chignik Formation.

Pan American Hoodoo Lake No. 2: Rocks of Mesozoic age were also drilled in

the Pan American Hoodoo Lake No. 2 well. Arkosic sandstone and limy siltstone

presumably correlate with the Staniukovich Formation from 9,670 to 11,250 feet

(T.D.). This section is cut by several diabase intrusions and appears to have

minimal porosity and permeability. The Herendeen Limestone (8,650-9,670 feet)

conformably overlies the Staniukovich Formation. It consists of gray, silty

limestone with locally abundant Inoeeramus prisms and contains numerous calcite

filled veinlets. Herendeen strata are in turn overlain by the Chignik Formation

(7,770-8,650 feet), which consists of interbedded siltstone, coal, and volcanic

derived sandstone and pebble conglomerate.

Cities Service, Painter Creek No. 1: Conglomerate and sandstone of the Chignik

Formation was drilled in the Cities Service-Painter Creek No. 1 well from approxi

mately 200 to 1,260 feet. Sandstone framework grains consist mainly of chloritic

basalt and andesite. Fractures are filled with a zeolite mineral that is probably

laumontite.

The Staniukovich Formation (1,260 to 2,040 feet) consists mainly of polymict

conglomerate containing clasts of metachert, dacite porphyry, granodiorite, al

tered mafic volcanic porphyry, and pyroxene diabase. Sandstone in this interval

consists of fine- to medium-grained, poorly sorted quartz-lithic subwacke. Some

chips are well sorted and tightly packed whereas others are poorly sorted and

have abundant matrix.

The Naknek Formation (2,040 to 6,510 feet) consists primarily of polymictic

conglomerate that contains an abundance of granitic and granulitic metamorphic

rocks. Much of the granitic material is presumably derived from nearby Jurassic

14

plutonic rocks (Naknek Lake Batholith). Naknek conglomerate overlies conglom

erate of the Shellkof Formation (6,750 feet to T.D.). Clasts in the Shelikof

conglomerate sequence contain a significantly higher percentage of porphyritic

volcanic rocks than in the Naknek Formation, particularly epidote and chlorite-

prehnite bearing andesites. At 7,800 feet, volcanic clasts consist of altered

diabase, granitic fragments are highly sericitized and a variety of metamorphic

clasts includes amphibolite, quartzite, and jadeite bearing granulite. It

should be noted that palynomorphs from coal beds between 1,800 and 2,300 feet

are reported to be Pal eocene or Eocene (see Appendix 5). This age conflicts

with the Late Cretaceous (Chignik Formation) age assignment of Brockway and

others (1975).

Gulf, Sandy River Federal No. 1:

A pronounced change in sandstone composition and a 30 increase in the

angle dip suggests that rocks below about 12,525 feet in the Sandy River well

may be correlative with the Upper Cretaceous Chignik Formation in the David

River 1-A well. A core sample at 13,003-13,009 feet consists of medium to

coarse grained pebbly sandstone containing grains of quartz, plagioclase,

dacite, porphery, and rare granitic rock fragments. Quartz and dacite are

more abundant, giving the rock a light color. Core descriptions in the well

history describe the rocks as "granite wash sandstone" which is a misnomer.

Tertiary Rocks

Thin sections from grain mounts and core chips of Tertiary rocks were

studied petrographically from the following five wells:

Cities Service, Painter Creek No. 1

Gulf-Alaskco, Port Heiden No. 1

15

Gulf, Sandy River Federal No. 1

Pan American, Hoodoo Lake No. 1

Pan American, David River No. 1A

Brief descriptions of each thin section are listed in Appendix 4. Tertiary

strata in the five wells consist of tuffaceous and/or carbonaceous siltstone,

arkosic and volcano!ithic sandstone, and coal stringers. In the section below

the general lithology of the Tolstoi, Stepovak, and Bear Lake formations is

described following the correlations of Brockway and others (1975).

Tolstoi Formation: The Tolstoi Formation (Eocene) contains abundant coal

stringers and disseminated carbonaceous material in siltstone laminae. Sand

stone framework grains consist of andesite and basaltic rock fragments with

nearly equal amounts of quartz and plagioclase. Porosity values appear to be

quite low, primarily because of grain interpenetration or an abundance of zeo

lite cement.

Stepovak Formation: Lithologically the Stepovak Formation (Oligocene) is sim

ilar to the Tolstoi Formation; at least, in the Port Moller area where the two

formations may interfinger. Stepovak strata appear to grade imperceptibly into

the overlying Bear Lake Formation. This gradation is indicated by electric logs

and cuttings which show no observable changes at formation boundaries shown in

Figure 2. The Bear Lake and Stepovak formations are generally lighter colored

and contain less carbonaceous material than the Tolstoi Formation.

Bear Lake Formation: Porosity and permeability data reported in the well history

of the Gulf Sandy River well indicate the upper part of the Bear Lake Formation

(Miocene) has the best reservoir characteristics of the three principal sedi-

16

mentary formations of Tertiary age on the Alaska Peninsula. In the Gulf Sandy

River No. 1 well,Bear Lake sandstone above 6,300 feet has porosity values as

high as 36.5% and permeability as high as 1,268 rods. Below 6,300 feet, high

values for porosity and permeability are 29% and 43 mds, respectively.

The Bear Lake Formation contains an abundance of tuffaceous siltstone and

the ratio of quartz and feldspar grains to volcanic rock fragments in sandstone

is higher than in the Tolstoi and Stepovak formations. This difference in

lithology was first noted by Burk (1965).

Igneous Rocks

Drilling logs from the Gulf-Alaskco, Port Heiden No. 1 and Pan Am Hoodoo

Lake No. 2 indicate that igneous rocks were drilled in each well.

Gulf-Alaskco Port Heiden No. 1: Data from the Gulf-Alaskco, Port Heiden No.

1 well indicates that volcanic rocks were drilled from approximately 9,300 to

15,000 feet. Thin sections of core samples from 11,833-11,834 feet and 11,955-

11,956 feet consist of mildly altered dacite microbreccia, sandy tuff, and por-

phyritic dacite flow rocks. Hornblende phenocrysts in the dacite are replaced

by chlorite and epidote. Plagioclase is partly altered to calcite and sericite.

Radiometric dates reported by Brockway and others (1975) in the volcanic section

of the Port Heiden well are 42 +_ 4 m.y. (11,832-11,850 feet) and 36+8 m.y.

(13,980 feet).

Two thin sections were cut from core samples near the bottom of the well

at 15,001 and 15,015 feet. The textures of these samples suggest a granitic

rock. Both are medium grained, salt and pepper colored quartz diorite or gran-

odiorite. Phenocrysts include plagioclase and quartz with local graphic inter-

growths, green hornblende and biotite. The age of the granitic rocks in the

17

Port Heiden well is unknown, as is their strati graphic relation to the overlying

volcanic sequence. Granitic and metamorphic rocks were also drilled in the bot

tom of the General Petroleum Great Basins Nos. 1 and 2 wells. The age of these

granitic rocks is reported to be Jurassic.

Pan American Hoodoo Lake No. 2: Cuttings with crystalline textures were studied

from two intervals in the Pan American Hoodoo Lake No. 2. The lithologies from

intervals of 1,210 to 10,220 feet and 1,480 to 10,490 feet deep consists of

basalt, diabase, and coarser grained fragments that may be gabbro. The rocks

are interpreted as hyabyssal bodies that have intuded the Staniukovich Formation.

It should be noted that dikes and sills cutting rocks as young as Miocene are

widespread all along the Alaska Peninsula, especially in the Port Moller area,

as indicated on the geologic map of Burk (1965).

PALEONTOLOGY AND PALYNOLOGY

In an attempt to better document published stratigraphic correlations of

wells drilled on the Alaska Peninsula, samples of washed well cuttings were

analyzed for foraminifera by Kristin McDougall and palynomorphs by Jack Wolfe

(Appendix 5). Forty-two samples from six wells were selected for paleontological

studies. Thirty-nine of these samples were found to be barren of foraminifera.

Fossils of probable early Tertiary age were recovered from only one well, the

Pan Am Hoodoo Lake No. 2, where forams were found between 2,100 and 7,690 feet.

Because of the poor percentage of foram recovery, additional sample material

was examined for palynomorphs. A total of 27 samples from five wells were ana

lyzed. Thirteen samples from four wells contained palynomorphs.

The palynomorphs from the Gulf Sandy River No. 1 (11,686-11,691 feet) and

those from the Pan Am Hoodoo Lake No. 1 (4,010-4,180 feet and 2,590-2,840 feet)

are very similar to one another and resemble the Alaskan Neogene (especially

18

Miocene) reported from other areas. The similarities in the two wells include

(1) dominance of PICEA, (2) common representation of TSUGA, (3) low representa

tion of broadleaved exotics (PTEROCARYA, ULMUS/ZELKOVA), and (4) presence of

some herbaceous types (Centrospermae, Cyperaceae). These palynornorphs are of

Neogene age and are thus probably from the Bear Lake Formation.

However, palynornorphs in the David River 1-A well from 3,200 to 9,100 feet

are dominated by broadleaved exotics while TSUGA is absent suggesting an Eocene

age. It should be emphasized however, that there is almost no palynological

control material available for the Alaskan Eocene (J. A. Wolfe, written commun.,

1977).

REFERENCES

Brockway, R., Alexander, B., Day, P., Lyle, W., Hiles, R., Decker, W., Polski,

W., and Reed, B., 1975, Bristol Bay region, "Stratigraphic correlation

section" southwest Alaska: The Alaska Geological Society, P. 0. Box 1288,

Alaska 99510.

Burk, C. A., 1965, Geology of the Alaska Peninsula Island arc and continental

margin: Geol. Soc. America Mem. 99, 250 p.

Cernock, P. J., 1976a, Hydrocarbon source rock evaluation study - organic geo-

chemical analyses of dry well cuttings, Pan Am-Socal USA Hoodoo Lake No.

2 well, sec. 35-50S-76W, Aleutian Island Recording District, Alaska:

Confidential Geochemical Service Report prepared by GeoChem Labs., Inc.,

1143-C Brittmore Rd., Houston, Texas, 11 p.

____1976b, Hydrocarbon source rock evaluation study, organic geochemical

analyses of dry well cuttings, General Petroleum Corporation, Great Basins

No. 1 well, sec. 2-27S-48W, Bristol Bay area, Alaska: Confidential Geo

chemical Service Report prepared by GeoChem Labs., Inc., 1143-C Brittmore

Rd., Houston, Texas, 11 p.

19

APPENDIX 1

Geochemical Data for General

Petroleum Great Basins No. 1 Well

1976c, Hydrocarbon source rock evaluation study organic geochemical

analyses of dry well cuttings AMOCO Production Company, Cathedral River

Unit No. 1 well, sec. 29-51S-83W, Cold Bay County, Alaska: Confidential

Geochemical Service Report prepared by GeoChem Labs., Inc., 1143-C

Brittmore Rd., Houston, Texas, 8 p.

20

GENERAL PETROLEUM - GREAT BASINS NO. IVITRINITE REFLECTANCE DATA

DE P T H

O-i

1-

2-

a4-

5-

6-

7-

\-

9-

10-

11-

10

B I OGEN 1C /IMMATURE/ / WET GAS- /

GAS y' OIL /OIL /CONDENSATE ,/ GAS

1+J !!+ j- $ J+ VISUAL KEROGEN ALTERATION

i1

1

i

\ ;'i * ' it-A-iT 'I.A-IT i|-0 | Min. Ave. Max.

1 1 i - I

T 'h^H |

nl |

£

nin

' *\' 1h-^H ,

1 -!

1

.'I'l'rriMM'rrrprrTTrrrr' i i i ' i i i i i 1 i i « i ' i ' i* 1:0 2.0 3.0 *-°

Figure prepared by Geo Chem Labs., Inc." ^1

GENERAL PETROLEUM-GREAT BASINS NO. I WELLSUMMARY OF ORGANIC ANALYSES

SOURCE CHARACTER

ORGANIC

CoS?EI^ ^EXTRACTION DATA

VISUAL KEROGENMATURATION TYPE ORGANIC MATTE'

INDEX

uwu A 1.1 M <

BEAR LAKE

2110'

STEPOVAK5(10'

JURASSIC

GRANITE ll.97«'

VARIED UTHOLCXn

\ARicr Lrmnux;i

f::-- ft!

\AHItLLlTOOUIG}

F:;;*Wx::

' t» -Vco

1 I"- -

"»K »-" ?.."

=.

^

' |

: i

_J i

.._!

' $' ' " '

= -

S-B

" "] '-LAY

") S , LT

"] ->ANO

3 COAL

' ^\ OOLCUlIE

" "] KlNtOUS

^ | CHLBT

: 3i

-

5-

^

_

7q

8^

I

91

11-

10 ~

' l '

- 4 1 .42 "::v!: ::::: ::: ;:: : :-:

*r^

:: 36.99 : ;:S:^^- '- 71 f

;.:.x :: :: : :x:::^;:: :::::;'!

,»,,1S4

^ 5^ AC :-/:v^;-:^T7

' 9 JO '-: :: : : ;-: :-:>::

.^r-r^-'.- f1- 11 ' < ' ' ' ' '

: "S

. j«___.," ^ I 9 1-T-:":"TTT? ± . ^ J / .v^v^u^.*

. J 3 6 v:-.^^^*"

, I ,

,52.74 ,50.58 ,48.54

,80.74 ,47.12

,4« 54

,48 54,50. ?4

, 2.01 2.00

,51.12 , 2.23

,6042 ,59,80 , 2 47 ,5986

,67 17

,65.30

, 2 70 ,63 «4

, 2.08

** 1 11 2«TO 11.080' __,; l«Etu,, 1 «S4

|Tx"j iwrosnc ojniwti

1MO 2111 3111 AR75M NS(,,...,, 1 |

m

i mmrnmfMF^^

in

re vM//mm?Mm®=s=tl==

1 ;:;:::;:;:;:s;:; :;:; :»;:s;:;x::;:s;:;x;:;:;fe^^^

i mfm===i1 8:v: ::: :: : ::V:'-:: :J

^^^ ., r .............| l:::^??:^1 :; ^.r^"--- 1^ r.

' l^S^SSip

I };: : : : : : : ji':v:.:-;?^==jS^=

*= _ .. . f W,-- .HI |-.- ;.. .' . -. yy.v . . ;-. -.^ -^

1 V =)1 e : : :P=:

'' ' ^ ^^.^....JiS^^^gi

j i u j j i . . 1 !

31,195

6436

8263

3146

11.513

15.915

17.1(1

51(7

7547

(351

18.133

25.1(4 3121

13.39S

1 1110 2111 3111

rrm »»LUIS ON A WIGHT \WCIGM1 BASIS

IHHH! F/^^lr^^'-'-jr 1P-N AROM S NSOASPH

vnC 5 SOLUBLE FRACTION, ASPH

i i i 1 2 3

ND

C<

- >

0*

4E

Q

«E

©

»^

O

e 4>-e

4> >

e

e>

e

i i i

p 12345

A

4 43

11234

AN* MM*'!. MtDAOUUIKJ'i

ttf ftlTIJb!* Swl'uA-tiJU UK. . UMuliW

N D = NO DATA

i ii

i1234

t

W; -; H- C

W; Am-H; C

W; Am; H (C )

-W; H; Am - C j

W; Am; H(C)

W; Am -H; C

~VW; H; Am-C

~ W; Am; H(C>

i

W; H; Am-C

W; H; Am(C) W; H-C; Am

W; H; C W; H; Am-C W;H;C W; H; Am - C W; Am-H;C W; H-C; Am W; H; Am(C)

i

-rW; H; Am-CH

"" W; H; C Am -W; H; CW; H; C (Am)

5Kerogen Key

v-c^r ?:--n -2c"

! ' ' :;., :,.: « : = :-

P-N. AROM. S t NSO

11 Figure prepared by Geo Chem Labs., Inc 22

Table I

Organic Carbon and Uthology Screen Analyses

GeoChem Sample Number

788-001788-002788-003788-004788-005788-006788-007788-008788-009788-010788-011788-012788-013788-014788-015788-016788-017788-018788-019788-020788-021788-022788-023788-024788-025788-026788-027788-028788-029788-030788-031788-032788-033

Well Depth Interval

1300'-1450'-1600'-1750'-1900'-2050'-2200'-2350'-2500'-2650'-2800'-2950'-3100'-3250'-3400'-3550'-3700'-3850'-4000'-4150'-4300'-4450'-4600'-4750'-4900'-5050'-5200'-5350'-5500'-5650'-5800'-5940'-6100'-

1310'1460'1610'1760'1920'2060'2210'2360'2510'2660'2810'2960'3110'3260'3410'3560'3710'3860'4010'4160'4310'4460'4610'4760'4910'5060'5210'5360'5510'5660'5810'5950'6110'

Percent Organic

Description Carbon

Composite.Composite.Dark gray shale.Dark gray shale.Composite.Medium dark gray shale.Medium dark gray shale,Claystone.Dark gray shale.Dark gray shale.Claystone.Coal.Coal.Coal.Claystone.Coal.Coal.Claystone.Claystone.Sandstone.Claystone.Coal.Siltstone.Coal.Coal.Siltstone.Siltstone.Siltstone.Siltstone.Siltstone.Siltstone.Siltstone.Siltstone.

0.181.520.251.40; 1.39 R0.830.56

chert, sand, sandstone. 0.291.37; 1.36 R1.321.421.06

52.7450.58; 50.82 R48.541.23

80.7447.820.86; 0.83 R0.700.340.84

48.541.28; 1.21 R

48.5450.241.251.561.21; 1.21 R2.012.001.871.071.75; 1.78 R

23

Table I



788-034788-035788-036788-037788-038788-039788-040788-041788-042788-043788-044788-045788-046788-047788-048788-049788-050788-051788-052788-053788-054788-055788-056788-057788-058788-059788-060788-061788-062788-063788-064788-065788-066

Well Depth Interval

6250'- 6260'6400'- 6410'6600'- 6610'6700'- 6710'6850'- 6860'7000'- 7010'7150'- 7160'7300'- 7310'7500'- 7510'7600'- 7610'7750'- 7760'7900'- 7910'8050'- 8060'8200'- 8210'8350'- 8360'8500'- 8510'8650'- 8660'8800'- 8810'8950'- 8960'9100'- 9110'9240'- 9250'9400'- 9410'9540'- 9550'9700'- 9710'9840'- 9850'

IDOOO'-IOOIO'10140'-10150'10300' -10310'10440'-10450'10600'-10610'10740'-10750'10900'-10910'11060'-11070'

Description

SlUstone.SIHstone.S1Hy gray shale.S1Hy gray shale.S1Hy gray shale.S1Hy gray shale.Coal.Silty gray shale.Coal.Coal.Sllty gray shale.Coal.Greenish gray siltstone.Medium gray-medium light gray slltstone.Medium light gray slltstone.Medium light gray siltstone.Medium light gray slltstone.Medium gray sllty shale.Medium gray silty shale.Medium gray sllty shale.Medium gray silty shale.Medium gray sllty shale.Coal.Medium gray silty shale.Coal.Medium gray silty shale.Medium gray silty shale.Coal.Medium dark gray silty shale.Medium dark gray silty shale.Medium dark gray silty shale.Medium dark gray silty shale.Medium dark gray silty shale.

Percent Organic Carbon

1.471.701.451.421.19; 1.191.39

58.122.23

60.4259.80;60.042.47

59.860.460.380.67; 0.690.670.871.241.571.09; 1.101.081.45

67.121.67

65.30;66.081.332.70

63.942.080.73; 0.710.980.601.04

R

R

R

R

R

R

24

Table 2

Organic Carbon Analyses and Gross Lithologlcal Description

GeoChemSampleNumber

Well Interval

Gross Uthologlcal Description GSA Total OrganicColor CarbonCode (X of Rock)

788-004D 1760'

788-006D 2060'

788-008D 2360'-A

-B

788-01OD 2660'

788-013D -A

788-016D-A

-B-C

788-019D-A

788-022D-A

-B

3110 1

3560'

4010'

788-021D 4310'

4460'

Varied lithology consisting of chert, reworked material, siliceous shale, shale and sand.

Varied lithology consisting of chert, reworked material, siliceous shale, shale and sand.

90% Shale, noncalcareous, very silty,blocky, soft, light gray. N7

10% Coal.

Varied lithology consisting of chert, reworked material, siliceous shale, and sand.

100% Shale, noncalcareous, silty, verycarbonaceous, blocky, black. Nl

60% Shale, slightly calcareous, verysilty, blocky, soft, light gray. N7

30% Reworked material. 10% Coal.

100% Shale, very slightly calcareous, very silty, blocky, soft, light gray. N7 Trace of reworked material.

Varied lithology consisting of chert, 'reworked material, shale and sand.


40% Coal.

1.15; 1.10

0.23

4.72

0.66

41.42

3.31; 3.32

1.10

0.71

12.66

25

Table 2

Organic Carbon Analyses and Gross Litholoqical'Description

GeoChemSampleNumber

Well Interval

Gross Lithologlcal Description GSA Total OrganicColor CarbonCode (% of Rock)

788-025D-A

-B

788-027D-A

-B

788-029D-A-B

788-030D -A

788-032D -A

4910 1

5210 1

5510'

5660'

5950 1


502 Coal.


40% Coal.

60% Coal and carbonaceous shale. 40% Shale, noncalcareous, very silty,

blocky, soft, light gray. N7

100% Shale, noncalcareous, very silty,blocky, soft, light gray. N7 Coal associated.

100% Shale, noncalcareous,very silty,blocky, soft, light gray. N7

15.99

7.51; 7.59 R

36.99

3.71

1.76

788-034D -A

788-036D-A

-B

788-038D-A

-B

788-040D-A

6260'

6610 1

6860'

7160'

100% Shale, noncalcareous, very silty,blocky, soft, light gray. N7 Trace of coal.

90% Shale, noncalcareous, silty, blocky,soft, medium light gray. N6

10% Coal.


10% Coal.

100% Coal.

2.11

2.03; 2.03 R

3.09

23.06

26

Table 2

Organic Carbon Analyses and Gross L1tholog1cal Description

GeoChemSampleNumber

Well Interval

Gross LUhologlcal Description GSA Total OrganicColor CarbonCode (X of Rock)

788-041D 7310 1-A

-B

788-042D 7510'-A-B

788-044D-A

-B-C

788-046D-A

'-B

788-048D-A

-B

788-050D-A

-B

7760'

8060 l

8360'

8660'

80$ Shale, noncalcareous, silty, blocky, soft, medium light gray. N6

20% Shale, noncalcareous, silty, carbonaceous, blocky, moderately hard, dark gray. N3

90% Coal.10% Shale, noncalcareous, silty, blocky,

soft, medium light gray. N6


30% Coal. 10% Bentonite.

50% Siltstone, noncalcareous, argillaceous, soft, fair porosity, no show, greenish gray. 5GY6/1

30% Shale, noncalcareous, silty, blocky, moderately hard, medium light gray. N6

20% Coal.Trace of sandstone.

80% Shale, noncalcareous, very silty,blocky, soft, medium light gray. N6

20% Coal.

50% Shale, noncalcareous, very silty,blocky, soft, medium light gray. N6

50% Sandstone, carbonate cement, silty, argillaceous, very fine to fine grain, subrounded to subangular, frosted to clear, fair porosity, no show.

3.25

21.12

9.10; 8.85 F

7.29

3.89

0.80

27

Table 2

Organic Carbon Analyses and Gross lithological Description

GeoChemSampleNumber

Well Interval

Gross Lithologlcal Description GSA Total OrganicColor CarbonCode (% of Rock)

788-052D 8960'-A

-B

-C

788-054D 9250' -A

-B

788-056D-A-B

-C

-B

788-060D-A

-B

-C

9550 1

788-057D 9710' -A

10150'

50% Shale, noncalcareous, silty, blocky, moderately hard, medium light gray. N6

30% Siltstone, noncalcareous, veryargillaceous, blocky, moderately hard, poor porosity, no show, medium light gray. N6


90% Shale, noncalcareous, very silty, blocky, moderately hard, medium light gray. N6


80% Coal.10% Shale, noncalcareous, very silty,

blocky, moderately hard, medium light gray. N6

10% Sandstone, carbonate cement, silty, argillaceous, very fine to fine grain, subrounded to subangular, frosted to clear, good porosity, no show.

60% Shale, noncalcareous, silty to very silty, blocky, moderately hard, light gray.

40% Coal and very carbonaceous shale.N7

70% Shale, noncalcareous, silty, blocky, moderately hard, medium dark gray. N4

20% Limestone, chalk, moderately hard,poor porosity, no show, white. N9

10% Coal.

4.99

2.11; 2.11

17.21

5.62

3.12

28

GeoChemSampleNumber

Table 2

Organic Carbon Analyses and Gross LUhologlcal Description

Well Interval

Gross Uthologlcal Description GSAColorCode

Total OrganicCarbon

(X of Rock)

788-061D-A-B

-C

10310'50% Coal.30% Siltstone, noncalcareous, argillaceous,

hard, little porosity, no show, light gray. N7

20% Shale, noncalcareous, silty, blocky, hard, medium dark gray. N4

23.48;23.54

788-062D 10450 1-A

-B-C

788-064D 10750'

3.3660% Shale, noncalcareous, silty to very

silty, blocky, hard, medium dark gray.N420% Coal.20% Limestone, chalk, moderately hard, poor

porosity, no show, white. N9

Varied lithology consisting of shales, siltstone, limestone and coal.

1.01

29

Table 3

Summary of Organic Carbon and Visual Kerogen Analysis


788-004D788-006D788-008D788-010D788-013D788-016D788-019D788-021D788-022D788-025D788-027D788-029D788-030D788-032D788-034D788-036D788-038D788-040D788-041D788-042D788-044D788-046D788-048D788-050D788-052D788-054D788-056D788-057D788-060D788-061D788-062D788-064D

Well Depth

Interval

1750- 17602050- 20602350- 23602650- 26603100- 31103550- 35604000- 40104300- 43104450- 44604900- 49105200- 52105450- 55605650- 56605900- 59506250- 62606600- 66106850- 68607150- 71607300- 73107500- 75107750- 77608050- 80608350- 83608650- 86608950- 89609240- 92509540- 95509700- 9710

10140-1015010300-1031010440-1045010740-10750

Organic Carbon.

(% of Rock)

1.15; 1.10R0.234.720.66

41.423.31; 3.32R1.100.71

12.6615.997.51; 7.59R

36.993.711.762.112.03; 2.03R3.09

23.063.25

21.129.10; 8.85R7.293.890.804.992.11; 2.11R

17.215.623.12

23.48; 23. 54R3.361.01

VisualType

W;-;H-CW;Am-H;CW;Am;H (C)W;H;Am-CW;H;Am-CW;Am;H (C)W;Am-H;CW;H;Am-CW;H;Am-CW;Am;W (C)W;Am;H (C)W;H;Am-CW;H;Am-CW;H;Am-CW;H;Am-CW;H;Am (C)W;H-C;AmW;H;CW;H;Am-CW;H;CW;H;Am-CW;Am-H;CW;H-C;AmW;H;Am (C)W;H;Am-CW;H;Am-CW;H;Am-CW;H;Am-CW;H;Am-CW;H;CAm-W;H;CW;H;C (Am)

KerogenAlteration (1-5 Scale)

1+ to 2-1+ to 2-1+1+1+ to 2-1+ to2-1+ to 2-1+ to 2-1+ to 2-1+ to 2-1+ to 2-1+ to 2-1+ to.2-2-2- to 22- to 22-1+ to.2-1+ to 2-1+ to 2-1+ to 2-1+ to 2-2-2-2-2-2-2-2-2-2-2- to 2

(2-)*(2-)*

(2- to 2)*(2- to 2)*

(1+)*(1+)*(1+)*(1+)*

(1+ to 2-)

30

Tabl

e 4

Sum

mar

y o

f C

15+

Sox

hiet

Ext

ract

ion

, D

easp

halte

nlng

an

d Liq

uid

Chr

omat

ogra

phy

A.

Wei

ghts

of

Ext

ract

s an

d C

hrom

atog

raph

lc

Fra

ctio

ns

GeoC

hem

Samp

leNu

mber

788-004D

788-

006D

788-

008D

788-01 OD

788-

01 3D

788-

0160

788-

0190

788-

0210

788-0220

788-

0250

788-

0270

788-

0290

788-

0300

788-0320

788-

0340

788-

0360

788-0380

788-

0400

788-

0410

788-0420

788-

0440

788-0460

788-

0480

788-0500

788-0520

788-

0540

788-0560

788-0570

788-

0600

788-

0610

788-

0620

788-0640

Well In

terv

al*

1750

- 1760

2050

- 20

6023

50-

2360

2650-

2660

3100

- 3110

3550-

3560

4000

- 40

1043

00-

4310

4450

- 44

6049

00-

4910

5200

- 52

105450-

5560

5650

- 56

605900-

5950

6250

- 6260

6600

- 66

1068

50-

6860

7150-

7160

7300

- 7310

7500

- 75

107750-

7760

8050

- 8060

8350-

8360

8650

- 8660

8950

- 8960

9240

- 9250

9540-

9550

9700

- 97

1010

140-

1015

010300-10310

10440-10450

1074

0-10

750

Weight o

f Ro

ck E

xtd

(gra

ms)

80.0

100.

080.0

85.0

85.0

85.0

85.0

80.0

90.0

90.0

50.0

90.0

80.0

90.0

95.0

85.0

80.0

80.0

80.0

90.0

85.0

55.0

80.0

70.0

100.

085.0

80.0

75.0

85.0

80.0

80.0

90.0

Tota

l . Extract

(gra

ms)

0.0262

0.0094

0.16

250.0285

2.7111

0.1678

0.0459

0.0208

0.5792

0.74

370.1523

1.0362

0.1292

0.0872

0.07

460.

0962

0.09

931.2732

0.1457

1.5445

0.4392

0.41

510.

5080

0.0375

1.81

330.

1227

2.0131

0.28

660.

2073

1.07

180.1868

0.0820

Precipitated

N-C5

Asphaltenes

Soluble

(grams)

0.0118

0.0058

0.03

620.0079

1.2753

0.0311

0.01

290.

0075

0.1803

0.21

130.

0448

0.31

700.

0361

0.0241

0.0388

0.0307

0.0251

0.44

270.

0577

0.5581

0.17

680.

1731

0.2114

0.01

340.

8269

0.0591

1.1363

0.13

770.

0978

0.39

570.0980

0.0483

(gra

ms)

0.0144

0.00

360.

1263

0.02

071.4358

0.1367

0.0330

0.0133

0.39

890.5324

0.1075

0.71

920.0931

0.0631

0.0358

0.06

550.

0742

0.83

050.0880

0.9864

0.26

240.

2420

0.2966

0.0241

0.9864

0.06

360.8768

0.14

890.

1095

0.6761

0.08

880.

0337

Sul fu

r(grams)

0.00

21N.D.

N.D.

N.D.

N.D.

N.D.

0.0025

0.0020

0.03

97N.D.

N.D.

N.D.

N.D.

0.00

39N.D.

N.D.

0.00

26N.

D.N.D.

N.D.

N.D.

N.D.

N.D.

0.00

23N.

D.N.

D.N.

D.N.D.

N.D.

N.D.

N.D.

N.D.

Para

ffin

s-

Eluted

Naph

then

es

Aroma ti

cs

NSO'S

(grams)

0.0028

N.D.

0.00

600.0029

0.04

790.

0055

0.00

350.

0014

0.01

460.

0261

0.00

460.0284

0.00

680.0058

0.0053

0.0076

0.00

770.

0437

0.00

950.

0771

0 J0211

0.0268

0.02

330.

0034

0.1626

0.0107

0.16

350.

0154

0.02

570.

1471

0.01

020.0070

(gra

ms)

0.00

25N.D.

0.0241

0.0038

0.15

950.

0146

0.00

380.

0019

0.0292

0.09

130.

0211

0.09

100.

0170

0.0070

0.0113

0.01

890.

0157

0.21

310.

0225

0.2801

0.08

460.

0736

0.08

050.

0060

0.35

470.0224

0.38

270.

0502

0.0480

0.32

250.0387

0.0158

(gra

ms)

0.00

41N.

D.0.0553

0.0068

0.56

900.0583

0.01

750.0063

0.16

080.

2166

0.05

710.2843

0.04

970.

0304

0.01

470.

0291

0.0371

0.3415

0.04

810.

3369

0.10

690.0970

0.1112

0.00

970.3805

0.0256

0.21

920.

0567

0.02

660.

1584

0.03

670.0108

None

lute

d NS

O'S

(grams )

0.00

29N.D.

0.04

090.0072

0.65

940.

0583

0.0057

0.0017

0.15

460.

1984

0.0247

0.3155

0.0196

0.0160

0.0045

0.00

990.

0111

0.2322

0.0079

0.2923

0.04

980.

0446

0.08

160.0027

0.0886

0.0049

0.11

140.

0266

0.0092

0.04

810.

0032

0.00

01

In f

eet

Table

4 (continued)

B. Co

ncen

trat

ion

of E

xtracted M

aterials in

Roc

k

GeoC

hem

Sample

Numb

er

788-

004D

788-

006D

788-0080

788-0100

788-0130

788-01 6D

788-0190

788-

021 D

788-0220

788-0250

788-

0270

788-0290

788-0300

788-0320

788-

034D

788-036D

788-0380

788-0400

788-0410

788-

042D

788-0440

788-

0460

788-0480

788-

0500

788-

052D

788-

054D

788-

0560

788-0570

788-0600

788-

061 D

788-

0620

788-0640

Well Interval*

1750

- 17

6020

50-

2060

2350

- 2360

2650

- 2660

3100

- 3110

3550

- 35

6040

00-

4010

4300

- 4310

4450

- 44

6049

00-

4910

5200

- 52

1054

50-

5560

5650-

5660

5900

- 5950

6250

- 62

6066

00-

6610

6850

- 68

607150-

7160

7300

- 7310

7500

- 75

1077

50-

7760

8050

- 8060

8350-

8360

8650

- 8660

8950

- 8960

9240

- 92

509540-

9550

9700

- 9710

1014

0-10

150

1030

0-10

310

1044

0-10

450

1074

0-10

750

Total

Extr

act

(ppm)

328 94

2031 335

3189

51974 540

260

6436

8263

3046

1151

31615 969

785

1132

1241

1591

518

2117161

5167

7547

6350 536

1813

314

4425164

3821

2439

1339

82335 911

Total

Extr

act

(ppm)

328 94

2031 335

3189

51974 540

260

6436

8263

3046

1151

31615 969

785

1132

1241

1591

518

2117161

5167

7547

6350 536

1813

314

4425164

3821

2439

1339

82335 911

Paraffin-

Naphthene

(ppm)

35 . 75 34 564 65 41 18 162

290 92 316 85 64 56 89 96 546

119

857

248

487

291 49

1626 126

2044 205

302

1839 128 78

Arom

atic

.(p

pm)

31 . 301 45

1876 172 45 24 324

1014 422

1011 213 78 119

222

196

2664 281

3112 995

1338

1006 86

3547 264

4784 669

565

4031 484

176

Total

(ppm

)

66 . 376 79

2440 236 86 41 487

1304 514

1327 298

142

175

312

293

3210 400

3969

1244

1825

1298 134

5173 389

6828 875

867

5870 611

253

Sulfur

(ppm

)

26 . . . . . 29 25 441 - - . . 43 . . 33 - . . - . . 33 . . . . . - .

Preci

ptd.

Asph

alte

ne(p

pm)

148 58 453 93

15004

366

152 94

2003

2348 896

3522 451

268

408

361

314

5534 721

6201

2080

3147

2643 191

8269 695

1420

418

361151

4946

1225 537

Elut

edNSO'S

(ppm

)

51 . 691 80

6694 686

206 79

1787

2407

1142

3159 621

338

155

342

464

4269 601

3743

1258

1764

1390 139

3805 301

2740 756

313

1980 459

120

Noneluted

NSO'

S(p

pm)

36 . 511 85

7758 686 67 21

1718

2204 494

3506 245

178 47 116

139

2903 99

3248 586

811

1020 39 886 58

1393 355

108

601 40 1

Total

(ppm

)

261 .

1655 256

2945

517

38 454

219

5949

6959

2532

10187

1318 827

611

820

949

1270

514

2113192

3924

5722

5053 401

12960

1054

18336

2947

1572

7528

1724 658

In f

eet

PPM

values ar

e ex

pres

sed

on a we

ight

/wei

ght

basi

s

Table

4 (C

onti

nued

)

C. Co

mposition

of E

xtracts

GeoC

hem

Samp

leNu

mber

788-

0040

788-006D

788-

008D

788-

01 OD

788-

01 3D

788-

01 60

788-

019D

788-

021 D

788-

022D

788-

0250

788-027D

788-029D

788-

030D

788-0320

788-034D

788-036D

788-

038D

788-040D

788-

04 ID

788-042D

788-044D

788-

046D

788-048D

788-050D

788-052D

788-

0540

788-056D

788-

057D

788-

060D

788-061 D

788-0620

788-

0640

Para

ffin

- Na

phth

ene

Aromatic

Sulf

urWell Interval*

1750

- 1760

2050-

2060

2350-

2360

2650-

2660

3100-

3110

3550-

3560

4000

- 4010

4300

- 43

104450-

4460

4900

- 49

1052

00-

5210

5450

- 55

6056

50-

5660

5900-

5950

6250

- 62

6066

00-

6610

6850

- 6860

7150-

7160

7300-

7310

7500-

7510

7750-

7760

8050

- 80

6083

50-

8360

8650-

8660

8950

- 89

6092

40-

9250

9540

- 95

5097

00-

9710

1014

0-10

150

10300-10310

10440-10450

1074

0-10

750

%

10.7 - 3.7

10.2 1.8

3.3

7.6

6.7

2.5

3.5

3.0

2.7

5.3

6.7

7.1

7.9

7.8

3.4

6.5

5.0

4.8

6.5

4.6

9.1

9.0

8.7

8.1

5.4

12.4

13.7 5.5

8.5

% 9.5 -

14.8

13.3 5.9

8.7

8.3

9.1

5.0

12.3

13.9 8.8

13.2 8.0

15.1

19.6

15.8

16.7

15.4

18.1

19.3

17.7

15.8

16.0

19.6

18.3

19.0

17.5

23.2

30.1

20.7

19.3

PN/A

rom

%

1.12

8.0

-0.25

0.76

0.30

0.38

0.92

5.4

0.74

9.6

0.50

6.9

0.29

0.22

0.31

0.40

0.83

4.5

0.47

0.40

0.49

2.6

0.21

0.42

0.28

0.25

0.36

0.29

0.57

6.1

0.46

0.48

0.43

0.31

0.54

0.46

0.26

0.44

E lut

ed

NSO'S

None

lute

d Precipitd.

NSO'S

Asph

alte

neHC

'S%

% %

Asph

/NSO

%

15.6 -

34.0

23.9

21.0

34.7

38.1

30.3

27.8

29.1

37.5

27.4

38.5

34.9

19.7

30.2

37.4

26.8

33.0

21.8

24.3

23.4

21.9

25.9

21.0

20.9

10.9

19.8

12.8

14.8

19.6

13.2

11.1

25.2

25.3

24.3

34.7

12.4 8.2

26.7

26.7

16.2

30.4

15.2

18.3 6.0

10.3

11.2

18.2 5.4

18.9

11.3

10.7

16.1 7.2

4.9

4.0

5.5

9.3

4.4

4.5

1.7

0.1

45.0

61.7

22.3

27.7

47.0

18.5

28.1

36.1

31.1

28.4

29 A

30.6

27.9

27.6

52.0

31.9

25.3

34.8

39.6

36.1

40.3

41.7

41.6

35.7

45.6

48.2

56.4

48.0

47.2

36.9

52.5

58.9

1.69 - 0.38

0.56

1.04

0.27

0.56

0.94

0.57

0.51

0.55

0.53

0.52

0.52

2.02

0.79

0.52

0.77

1.03

0.89

1.13

1.22

1.10

1.08

1.76

1.94

3.44

1.65

2.73

1.92

2.46

4.43

20.2 -

18.5

23.5 7.7

12.0

15.9

15.9 7.6

15.8

16.9

11.5

18.4

14.7

22.3

27.5

23.6

20.2

22.0

23.1

24.1

24.2

20.4

25.1

28.5

27.0

27.1

22.9

35.6

43.8

26.2

27.8

HC/N

on H

C

0.25 - 0.23

0.31

0.08

0.14

0.19

0.19

0.08

0.19

0.20

0.13

0.23

0.17

0.29

0.38

0.31

0.25

0.28

0.30

0.32

0.32

0.26

0.33

0.40

0.37

0.37

0.30

0.55

0.78

0.35

0.39

* In

fee

t

Tab

le

5-A

Sat

urat

e H

ydro

carb

on A

naly

ses

Sum

mar

y of

Par

affln

-Nap

hthe

ne D

istr

ibu

tio

n

CO

GeoChem

Sample

Number

788-0040

788-006D

788-

008D

788-01 OD

788-

0130

788-01 6D

788-

019D

788-021 D

788-0220

788-0250

788-

027D

788-0290

788-

0300

788-032D

788-

034D

788-

0360

788-0380

788-

040D

788-

041 D

788-0420

788-

0440

788-046D

788-048D

788-0500

788-

052D

788-0540

788-056D

788-057D

788-060D

788-061D

788-062D

788-0640

Well In

terv

al*

1750-

1760

2050

- 2060

2350

- 23

602650-

2660

3100

- 3110

3550-

3560

4000-

4010

4300-

4310

4450-

4460

4900

- 49

105200-

5210

5450

- 5560

5650

- 5660

5900-

5950

6250-

6260

6600

- 6610

6850

- 6860

7150

- 7160

7300-

7310

7500-

7510

7750

- 77

608050-

8060

8350-

8360

8650-

8660

8950-

8960

9240

- 9250

9540-

9550

9700-

9710

1014

0-10150

1030

0-10310

1044

0-10

450

1074

0-10750

%Paraffin

5.6

4.3

16.3 6.4

18.9 7.7

5.8

7.3

11.9

18.1

12.5

15.7 9.5

11.7

15.0

23.2

10.2

22.5 9.2

28.4

19.7 8.0

7.8

8.5

2.9

8.7

20.9

19.8

13.4

17.9

22.1

14.9

%Is

opre

nold

0.1

0.1

2.3

1.1

14.5 2.5

1.4

0.3

6.9

22.5 8.6

8.0

2.9

1.8

0.8

3.6

3.3

13.4 2.8

18.8 7.3

4.5

3.8

0.8

1.3

2.9

7.0

5.2

3.2

5.8

3.4

1.0

%Na

phth

ene

94.3

95.5

81.4

92.5

66.7

89.8

92.8

92.4

81.2

59.3

78.9

76.2

87.6

86.6

84.2

73.2

86.4

64.1

88.0

52.8

73.0

87.4

88.4

90.7

95.9

88.4

72.1

75.0

83.3

76.3

74.6

84.2

C-P

Index

A

1.07

1.24

2.37

1.39 _ . .

1.09 - - . . - - . - - . - - - - .

1.46 . - .22

.25

.26

.12

.19

1.24

C-P

Inde

x B

1.12

2.26

4.21

1.72 . . .

1.25 . - . _ - . . - . . - . . - .

1.69 - .

1.50

1.48

1.55

1.27

1.44

1.51

1pl9

/1p20

4.00

7.00

8.69

45.5

094

.00

17.0

032

.67

12.5

026

.50

72.6

736

.17

15.2

59.

863.

202.

535.

8311

.29

21.6

49.

2922

.92

20.1

4,8

1,6

6,4

0,5

86.1

38.

538.

774.

237.

244.

373.

28

In fe

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-- _. _ _ ^ 'ooo 'Cncovo >aôco ' o............. ro M

' vo

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roooooo 'tn »--ooo 'Oro-- «o o

ooooooorooooooooooooooooooooooooo o ................................ to«ps3 »psj ._ tnoocooooo ' ' ooooorvjrsjtorsjpo 'to^ ro

3o o o o o o o -^ o o o o o o o o o o o o o o o o o o o o o o o o o ................................ to »«ro - ! .tocnrooorooocooto 'coôoooooivjjktorocorocoo to

oooooooooooooooooooooooooooooooo o ................................ CO »«OOfvjOOOOOOOOOOOOOOOOOOOOOOOOOOOOO £*

3

CO «

Tab

le 6

Vis

ual

Ker

ogen

Ass

essm

ent

Wor

kshe

et

TYP

E

OF

OR

GA

NIC

CO

LOR

O

FM

AT

TE

R

ST

AT

E

OF

OR

GA

NIC

M

AT

TE

R

Dt P

OS

ITIO

NA

L

EN

VIR

ON

ME

NT

MA

TU

RA

TIO

N

IND

EX

MA

T T

FR

OR

GA

NIC

788-

0250

788-

027D

788-

040D

788-

041D

788-

042D

788-

044D

W;A

m-H

;C

W;H

-C;A

m

788j

-050

D

788-

0520

788-

0540

788^

0560

788-

0570

1015

0^

1031

0;

1045

0'

Tabl

e 7

VltrlnU

e R

efle

ctan

ce

Sum

mar

y

GeoChem

Samp

le

Numb

er

788-0040

788-0100

788-0130

788-

0160

788-0190

788-022D

788-

025D

788-

0290

788-

0320

788-0360

788-0400

788-0420

788-0440

788-0480

788-0520

788-0560

788-0580

788-0610

Dept

h (f

eet)

1750

-1760

2650-2660

3100

-311

0

3550

-3560

4000-4010

4450-4460

4900-4910

5450

-556

0

5900-5950

6600

-6610

7150-7160

7500

-7510

7750-7760

8350-8360

8950

-896

0

9540-9550

9840-9850

1030

0-10

310

Numb

er

of

Read

ings

* 14 40 40 27 40 40 41 37 40 40 40 40 40 40 40 40 40

Mini

mum

Reflectance

(X R

o)

- 0.17

0.17

0.16

0.15

0.20

0.27

0.24

0.25

0.19

0.48

0.43

0.21

0.38

0.23

0.50

0.29

0.39

Maximum

Refl

ectance

(X R

o)

- 0.87

0.34

0.36

0.67

0.35

0.42

0.47

0.47

0.54

0.63

0.66

0.63

0.68

0.67

0.78

0.71

0.83

Aver

age

Refl

ecta

nce

(X R

o)

. 0.40

0.24

0.24

0.28

0.27

0.32

0.35

0.37

0.40

0.55

0.54

0.52

0.55

0.48

0.67

0.55

0.65

Note:

Insu

ffle

nt k

erog

en r

eturn

to p

repa

re p

lug.

APPENDIX 2

Geochemical Data for Pan

American Hoodoo Lake Unit No. 2

PAN AM-SOCAL-HOODOO LAKE NO. 2VITRINITE REFLECTANCE DATA

BIOGENIC /IMMATURE/ / WET GAS-

GAS / OIL /OIL /CONDENSATE GAS

3!+ 1- T H- VISUAL KEROGEN ALTERATION

1-

2-

3-

4-

5-

DETP

HB 7-

ft

9-

10-

11-

Min. Ave. Max.

12- 'iMTITITITITnTH'HTHVITrnTI'l'riTn'nTr 0 * 0 rn *n 4.02.0 3.0

Figure prepared by Geo Chem Labs., Ir 38

PAN AM - Socal USA HOODOO LAKE UNIT 2 WELL

SUMMARY OF ORGANIC ANALYSES

SOURCE CHARACTER

ORGANIC f* ARBON

ELECT ' C CONTENT C 15 .E)CTRACTION DATA

VISUAL KEROGENMATURATION TYPE ORGANIC MATTER

INDEX

A 1 U U * II* 1*1 » « Ml II

BEAM LAKE

i»ir

STEPOVAK

Illl'

TOLSTOI

CHIGNIKTill'

HERENDEEN

LIMESTONE » '

«CT»m«»«

i t : >°:*:l

li'i '

V. E

t .4*

VAMreD UtMOUJOf

tf '.«

! :

S t -.: 'fl

..«c,Lr»ioc,

-».,,T~\ CM

s 1?' : ""'

=? 11 / .; .

= it

[

«.-Mit- untaouit

r H

r, J]j 2 l\ 1 . ;

lai ' ; 1 j.

if 4 in \ -' ' 5-i

i-

- 7-

-' 8-H-j:

r 9 :

-

ZT

(

1

«

i

i

\I1 U». \

T )l T x^1

4.M

. 7.44 £^2L

Tlr^T^

ji 25 rn" i u.f^zA~^s

ff

^1.51

.31)4,S 1C ,] 1C1 >' 1 >' 1 ".1 .11 ,1 II > «l

» uI -*2 1 »

I U U

| | CLAY ^^», «n«.

E3 SILT

H COAL

g| DOLOMITE

E3 IGNEOUS

E3 CHERT

.'li'i

' 1 1

1 1

1 1

: \i i

i' 1 1 ti ' ' i i i

t_x^

1 I1 11 '

1

1

1 ' 1 1i 1 i I i 1 i ! i

" 4

mi

ROW T$SI I 1

* *

*

*

*

*

*

o*9

9*s-» -O

*

*

A

B

C

12342

I

B

tsa

SWB r-j KsaBB

r-s E

mmBOB KSfoe rz MM

1

1 1 1

11 11 1 1

I 3

a

i

W; H; Am(C)

W; Am;H-C W; Am-H;C

W; C; H (Am )

W;H;Am(Al)-C

W; C; H(Am) W; C;Am(Al)-H

W- C; H; Am

W-C;Anr-H: -

^W; Am(Al);H(C)

W; Am(Al)-C; H

W; Am;C(H) W; Am(Al)-H-C Am-W:-:H-C W; Am;H-C W; Am;C W; Am; H- C

W; Am-C; H W; C; Am

-)-W - C: -: Am - H W - C; Am; H W-C; -; Am - H

-W-C; Am; H

W-C;Am-H; - W-C; Am;-

W - C; -; Am -H

W-C; Am; H

w * . «m\ IMX tan Kerogen K«y

^H^HI f /^i " j PN AROM S NSO ASPH

5

^>C 5 SOLUBLE FRACTION, A8W

P-N. AROwC S t NSO

*NO DATA r : 2p" " *""nal

Figurt prepared by Geo Chem Lobt., Inc."39

Table 8

Organic Carbon and Lithology Screen Analyses

GeoChem Sampl e Number

787-001787-002787-003787-004787-005787-006787-007787-008787-009787-010787-011787-012787-013787-014787-015787-016787-017787-018787-019787-020787-021787-022787-023787-024787-025787-026787-027787-028787-029787-030787-031787-032787-033787-034787-035787-036787-037

Well Depth Interval

227'-390'-540'-690'-840'-1050'-1170'-1290'-1440'-1590'-1740'-1890'-2040'-2190'-2340'-2490'-2640'-2790'-2940'-3090'-3240'-3390'-3540'-3690'-3840'-3990'-4140'-4300'-4440'-4600'-4740'-4880'-5040'-5200'-5340'-5500'-5640'-

240'420'570'720'870'1080'1200'1320'1470'1620'1770'1920'2070'2220'2370'2520 12670 12820'2970'3120'3270'3420'3570'3720'3870'4020'4160'4320'4460'4620'4760'4900'5060'5220'5360'5520'5660'

Description

Silty claystone, light gray.Composite, reworked material.Composite, reworked material.Composite, sand and reworked.Composite, sand and reworked.Composite, sand and reworked.Silty claystone, light olive gray.Claystone, light gray.Composite, clay, carbonate, sand, s.s., reworked.Composite, clay, carbonate, sand, ss. reworked.Composite, claystone, limestone, ss. sand, rewkd.Claystone, very sandy w/glauconiteSandstone, very clayey, light olive gray.Composite, sandstone, claystone, siderite.Sandstone, very clayey, light olive gray.Composite, sandstone, claystone, siderite.Sandstone, very argillaceous, light olive gray.comp., Imst, sandstone, calcite, siderite.Comp. siltstone, s.s., It. olive gray, tr. calc.Comp. siltstone, s.s., It. olive gray, tr. calc.Comp. siltstone, s.s., It. olive gray, tr. calc.Sandstone.Composite, sandstone, siderite, trace calcite.Medium dark gray siltstone.Medium dark gray siltstone.Greenish gray silty shaleSilty shale.Silty shale, medium dark gray.Silty shale, medium dark gray.Silty shale, medium dark gray.Silty shale, medium dark gray.Slightly silty shale, medium dark gray.Silty shale, medium dark gray.Silty shale, medium dark gray.Slightly silty shale, medium dark gray.Shale, medium dark gray.Shale, medium dark gray.


0.760.210.190.100.14;0.140.370.490.140.11;0.110.140.110.160.15;0.140.220.160.090.10;0.080.240.160.450.38;0.180.270.290.300.32;0.290.340.390.420.38;0.450.47

0.10 R

0.13 R

0.20 R

0.09 R

0.39 R

0.34 R

0.42 R

40

Table 8



787-038787-039787-040787-041787-042787-043787-044787-045787-046787-047787-048787-049787-050787-051787-052787-053787-054787-055787-056787-057787-058787-059787-060787-061787-062787-063787-064787-065787-066787-067787-068787-069787-070787-071787-072787-073787-074

Well Depth Interval

5800'- 5820'5940'- 5960'6100'- 6120'6240'- 6260'6400'- 6420'6540'- 6560'6700'- 6720'6840'- 6860'7000'- 7020'7140'- 7160'7300'- 7320'7440'- 7460'7600'- 7610'7750'- 7760'7900'- 7910'8050'- 8060'8200'- 8210'8350'- 8360'8500'- 8510'8660'- 8670'8800'- 8810'8950'- 8960'9100'- 9110'9250'- 9260'9400'- 9410'9550'- 9560'9700'- 9710'9860'- 9870'

lOOOO'-lOOlO'10150'-10160'10300'-10310'10450'-10460'10600'-10610'10750'-10760'10900'-10910'11050'-11060'11240'-11243'

Description

Silty coal.Silts tone, medium gray.Silty coal.Coal.Silty coal.Silty shale, black, carbonaceous.Silty shale, black, carbonaceous.Silty shale, black, carbonaceous.Shale, black, carbonaceous.Shale, black, carbonaceous.Shale, black, carbonaceous.SandstoneShale, black, carbonaceous.Shale, black.Shale, black, carbonaceous.Shale, black, carbonaceous.Coal.Shale, black, slightly carbonaceous.Shale, slightly silty, grayish black.Shale, medium dark gray.Shale, slightly silty, dark gray.Shale, slightly silty, dark gray.Shale, slightly silty, dark gray.Limestone.Limestone.Shale, silty, dark gray.Shale, silty, dark gray.Shale, silty, dark gray.Sandstone.Tuffaceous sandstone.Tuffaceous sandstone.SandstoneShale, sllty, medium dark gray.Sandstone.Intrusives, igneous.Composite, intrusives, igneous.Composite, intrusives, igneous.


21.520.9030.74;29.9657.3016.906.585.845.46; 5.3811.3817.089.080.255.14; 5.223.9213.3210.7473.725.42; 5.301.170.590.540.462.08; 2.070.120.131.031.851.11; 1.100.080.060.080.050.05; 0.060.110.060.210.13

R

R

R

R

R

R

R

41

Table 9

Organic Carbon Analyses and Gross Lithological Description

GeoChemSampleNumber

Well Interval

Gross Lithological Description GSA Total OrganicColor CarbonCode (% of Rock)

787-001D 270'

787-007D -A

787-008D-A

-B

787-012D-A

-B

-C

787-017D-A

-B

-C

787-022D-A

-B

-C

1260'

1410'

I960 1

2670'

3420'

Varied lithology consisting of shale, reworked shale, chert,and unconsloidated sand.

Varied lithology consisting of shale, reworked shale, chert, and unconsolidated sand.

70% Shale, noncalcareous, silty, blocky,moderately hard, light gray. N7

30% Reworked chert and siliceous shale. Trace of sand grains.

50% Shale, noncalcareous, silty, blocky, moderately hard, light gray. N7

40% Sandstone, argillaceous cement, very fine to fine grain, subrounded to subangular, frosted to clear, fair porosity, no show,

10% Reworked chert and siliceous shale.

60% Shale, noncalcareous, very silty,blocky, moderately hard, olive gray. 5Y4/1

30% Shale, noncalcareous, blocky,moderately hard, greenish gray. 5G6/1

10% Bentonite.


40% Shale, noncalcareous, silty, very sandy, fine grain, subrounded, frosted; blocky, moderately hard, dark gray. N4

10% Bentonite.

0.29

1.27

0.22

0.15

0.19; 0.19 R

0.22

42

Table 9


GeoChemSampleNumber

Well Interval


787-024D-A

-B

3720'

787-027D -A

-B

-C

787-030D-A

787-033D-A

-B

787-035D-A

-B

787-037D

4180'

4640

5060'

5380'

5680'


30% Shale, noncalcareous, silty, very sandy; fine grain, subrounded, frosted; blocky, moderately hard, medium dark gray. N4

50% Shale, noncalcareous, silty, very sandy; fine grain, subrounded, frosted; blocky, moderately hard, medium dark gray.

40% Shale, noncalcareous, silty, blocky, moderately hard, medium dark gray.

10% Bentonite.

0.28

60% Shale, noncalcareous, silty, very sandy; fine grain, subrounded, frosted; blocky, moderately hard, medium dark gray.

40% Shale, noncalcareous, silty, blocky, moderately hard, medium dark gray.

N4

N4

N4

N4

60% Shale, slightly calcareous, silty, blocky, hard, medium light gray.



40% Igneous,? diorite, gabbro. Mud additives associated.

Varied lithology consisting of shale, siltstone, sandstone, weathered igneous, coal and mud additive.

0.14

0.21

0.20; 0.17 R

0.29

1.48

43

Table 9


Well Gross Lithological Description Interval

GSA Color Code

Total Organic Carbon

(% of Rock)

787-039D

787-040D-A

-B

-C

787-042D-A

-B

-C

787-043D-A

-B

-C

787-044D-A-B-C

5980'

6140'

6440'

6560'

6740'

4.25Varied lithology consisting of shale, carbonaceous shale, coal, sandstone and siltstone.


30% Sandstone, silica cement, veryargillaceous, very fine to fine grain, subangular to subrounded, clear to frosted, fair porosity, no show.

20% Coal.

60% Shale, noncalcareous, silty, blocky, hard, medium dark gray. N4

20% Sandstone, silica cement, veryargillaceous, fine grain, subangular to subrounded, clear to frosted, fair porosity, no show.

20% Coal.

60% Shale, noncalcareous, very carbon aceous, grading into a coal, blocky, N3 to

7.28

4.39; 4.44 R

5.25

hard, dark gray to black. 30% Shale, noncalcareous, very silty,

blocky, hard, medium dark gray. 10% Sandstone, carbonate cement, fine

grain, subrounded to subangular,frosted to clear, good porosity,no show.

60% Shale, same as 787-043D-A. 20% Shale, same as 787-043DrB. 20% Sandstone, same as 787-043D-C.

Nl

N4

7.44

44

Table 9


GeoChemSampleNumber

Well Interval


787-046D -A

-B

7040'

787-048D -A

-B

787-050D

787-052D

787-053D

787-054D -A

-B

7360'

7640'

7920'

8070'

8220'

60% Shale, noncalcareous, very carbonaceous, grading into a coal, blocky, hard, N3 to dark gray to black. Nl

40% Sandstone, carbonate cement, argillaceous, very fine to fine grain, subrounded to subangular, frosted to clear, fair porosity, no show. Mud additives associated.

60% Sandstone, carbonate cement, very fine to fine grain, subrounded to subangular, frosted to clear, fair porosity, no show.

40% Shale, noncalcareous, very carbonaceous, grading into a coal, blocky, hard, N3 to dark gray to black. Nl Mud additives associated.

Varied lithology consisting of shale, coal, siltstone, sandstone and mud additives.

Varied lithology consisting of shale, siliceous shale, sandstone, siltstone, igneous and mud additives.

Varied lithology consisting of shale, siliceous shale, sandstone, coal, igneous and mud additives.

80% Shale, noncalcareous, very carbon aceous, grading into a coal, blocky, N3 to hard, dark gray to black. Nl

20% Sandstone, carbonate cement, argillaceous, fine grain, subrounded to subangular, frosted to clear, fair porosity, no show. Mud additives associated.

3.38

3.23

6.85; 6.92 R

0.92

3.63

26.25

45

Table 9


Well Gross Lithological Description Interval

GSA Color Code

Total Organic Carbon

(X of Rock)

787-055-A-B-C

787-056D-A

-B

787-058D -A

-B

-C

787-060D -A

-B

-C

8370

8520'

8820'

9130'

50% Shale, same as 787-054D-A. 30% Sandstone, same as 787-054D-B. 20% Igneous.

Mud additives associated.

80% Shale, noncalcareous, very silty,blocky, hard, dark gray. N3

20% Sandstone, carbonate cement, very argillaceous, fine grain, subrounded to subangular, frosted to clear, no show. Mud additives associated.

50% Sandstone, carbonate cement, very fine to fine grain, subrounded to subangular, frosted to clear, good porosity, no show.

40% Shale, slightly calcareous, silty,blocky, hard, dark gray. N3

10% Calcite.Mud additives associated.

60% Sandstone, carbonate and silica cement, limy, fine grain, subrounded to subangular, frosted to clear, fair porosity, no show.

30% Shale, slightly calcareous, silty,blocky, hard, dark gray. N3

10% Calcite.Mud additives associated.

2.27

0.76; 0.78 R

0.85

0.26

46

-B

787-062D-A-B

787-063D -A

787-064D

787-065D

787-070D

-B

Table 9


GeoChemSample Number

787-061D-A

WellInterval

9270'

Gross Lithological Description GSAColor Code

80% Limestone, chalk, sandy; very fine to

Total OrganicCarbon

(% of Rock)

0.51

9420'

9570'

9720'

9890 1

10610'

787-073D 11060'

fine grain, subrounded to subangular, frosted to clear; good porosity, no show, very light gray. N8

20% Shale, noncalcareous, silty, blocky, hard, dark gray. N3 Mud additives associated.

70% Limestone, same as 787-061D-A. 30% Shale, same as 787-061D-B.

Mud additives associated.

70% Limestone, chalk, argillaceous, very fine to fine grain, subrounded to subangular, frosted to clear, blocky.moderately hard, light gray. N7

30% Shale, slightly calcareous, silty,blocky, hard, dark gray. N3 Mud additives associated.

Varied lithology consisting of weathered igneous, shale, sandstone, and mud additives.

Varied lithology consisting of igneous, shale, sandstone, and mud additives.

60% Shale, noncalcareous, very silty,blocky, hard, dark gray. N3

40% Siltstone, noncalcareous, argillaceous, hard, little porosity, no show, light gray. N7

Varied lithology consisting of igneous, shale, sandstone and mud additives.

0.40

0.35; 0.32 R

0.48

0.55

0.27

0.46

47

Table 10

Summary of Organic Carbon and Visual Kerogen Analysis


787-001D787-007D787-008D787-012D787-017D787-022D787-024D787-027D787-030D787-033D787-035D787-037D787-039D787-040D787-042D787-043D787-044D787-046D787-048D787-050D787-052D787-053D787-054D787-055D787-056D787-058D787-060D787-061D787-062D787-063D787-064D787-065D787-070D787-073D

Well Depth

Interval

227- 2701080- 12601260- 14101890- 19502610- 26703360- 34203660- 37204140- 41804580- 46405020- 50605320- 53805620- 56805940- 59806080- 61406380- 64406520- 65606640- 67406960- 70407240- 73607570- 76407870- 79208050- 80708190- 82208350- 83708490- 85208790- 88209080- 91309250- 92709390- 94209540- 95709700- 97209860- 9890

10590-1061011040-11060

Organic Carbon

(% of Rock)

0.291.270.220.150.19;0.19R0.220.280.140.210.20; 0.17R0.291.484.257.284.39; 4.44R5.257.443.383.236.85; 6. 92R0.913.63

26.252.270.76; 0.78R0.850.260.510.400.35; 0.32R0.480.550.270.46

VisualType

W;H;Am (C)W;Am;H-CW;Am-H;CW;C;H (Am)W;H;Am (Al)-CW;C;H (Am)W;C;Am (Al)-HW-C;H;AmW-C;Am-H;-W;Am (A1);H (C)W;Am (A1);H (C)W;Am (A1)-C;HW;Am;C (H)W;Am(Al)-H-C;-Am-W;-;H-CW;Am;H-CW;Am;CW;Am;H-CW;Am-C;HW;C;AmW-C;-;Am-HW-C;-;Am-HW-C;Am;HW-C;-;Am-HW-C;Am;HW-C;Am;HW-C;Am;HW-C;Am;HW-C;Am;HW-C;Am;HW-C;Am-H;-W-C;Am;-W-C;-;Am-HW-C;Am;H

KerogenAlteration (1-5 Scale)

2-1+to^- (2)*2- to 2 (l)2- to 2 (1)2- to 2 (1)22 (l+to2-)*2 (1)*2 to 2+ (1+ to 2-)*2 to 2+ (l+to2-)*2 to 2+ (l+to2-)*2 to 2+ (1+ to 2-)*22 (l-i- to 2-)*2 to 2+2 to 2+2 to 2+2 to 2+2 to 2+2 to 2+22 to 2+2 to 2+2 to 2+ (2- to 2)*2+2+2+ to 3- (£- to 2)*2 to 2+ (2- to 2)*2+ to 3- (2-)*2 to 2+2+ to 3- (1)*2+ to 3-2+ to 3- (1+)*2 to 2+

48

Table

11

Summary

of C

15+

Soxhlet

Extr

acti

on,

Deas

phal

teni

ng

and

Liqu

id C

hrom

atog

raph

y

A. We

ight

s of E

xtracts

and

Chromatographlc

Frac

tion

s

vo

GeoChem

Sample

Number

Well Interval*

787-001D

787-

007D

787-008D

787-

012D

787-017D

787-022D

787-

024D

78

7-02

7D

787-

030D

787-0330

787-

0350

78

7-03

70

787-

039D

787-0400

787-0420

787-

0430

78

7-04

40

787-0460

787-

0480

78

7-05

00

787-0520

787-

0530

78

7-05

40

787-0550

787-0560

787-

0580

787-0600

787-

0610

787-0620

787-

0630

78

7-06

40

787-

0650

78

7-07

00

787-0730

227-

1080

- 1260-

1890-

2610

- 33

60-

3660

« 41

40-

4580-

5020

- 5320-

5620

- 5940-

6080-

6380

- 65

20«

6640-

6960

- 72

40-

7570

- 78

70-

8050

- 81

90-

8350

- 8490-

8790-

9080

- 9250-

9390-

9540-

9700-

9860-

10590-

11040-

27

0 1260

1410

1950

26

70 34

20 37

20 41

80 46

40 50

60 5380

56

80 59

80 61

40 64

40 65

60 67

40 70

40 73

60 7640

79

20 8070

82

20 83

70 85

20 88

20 9130

92

70 94

20 95

70 97

20 98

90 1

0610

11060

Weig

ht of

Total

Rock E

xtd. Extract

(grams)

(gra

ms)

80.0

60.0

55.0

80.0

75.0

70.0

70.0

75.0

85.0

70.0

85.0

65.0

75.0

75.0

95.0

80.0

60.0

65.0

60.0

75.0

95.0

85.0

75.0

70.0

85.0

80.0

75.0

85.0

80.0

80.0

80.0

85.0

80.0

85.0

0.00

140.

0035

0.00

400.0031

0.00

450.

0024

0.00

150.

0014

0.00

300.0011

0.0017

0.00

360.

0508

0.04

460.

0393

0.09

180.0170

0.0384

0.01

360.

0172

0.0115

0.00

360.

0020

0.0014

0.0065

0.0011

0.00

130.

0050

0.0029

0.00

230.0011

0.00

140.0069

0.00

12

Prec

ipit

ated

N-C5

Asphaltenes

Soluble

(gra

ms)

(gra

ms)

0.0008

0.0014

0.0024

0.0011

0.0015

0.0009

0.0009

0.0001

0.0010

0.0001

0.0005

0.0020

0.0053

0.0058

0.0041

0.0044

0.00

480.0032

0.0016

0.0015

0.0016

0.0016

0.0006

0.0010

0.0043

0.0007

0.0005

0.0008

0.0003

0.0007

0.0002

0.00

080.

0032

0.0005

0.0006

0.0021

0.0016

0.00

200.

0030

0.0015

0.0006

0.0013

0.00

200.

0010

0.0012

0.00

160.0455

0.03

880.0352

0.0874

0.0122

0.0352

0.0120

0.0157

0.0099

0.00

200.0014

0.0004

0.0022

0.0004

0.00

080.0042

0.0026

0.0016

0.0009

0.00

060.0037

0.0007

Sulfur

(gra

ms)

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

Para

ffin

s-Na

phth

enes

(gra

ms)

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

0.0102

0.0072

0.0077

0.01

640.0028

0.0090

0.00

350.0034

0.00

31N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

Arom

atic

s(g

rams

)

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

0.01

600.

0136

0.0118

0.01

950.

0052

0.0103

0.0055

0.00

740.

0030

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

E lut

edNSO'S

(gra

ms)

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

0.0071

0.0071

0.0061

0.00

950.0039

0.00

600.

0027

0.00

450.0033

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

Noneluted

NSO'S

(gra

ms)

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

0.0122

0.01

090.0096

0.0420

0.00

030.

0099

0.0003

0.00

040.

0005

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

N.D.

Tn

Tab

le

11

B.

Conce

ntr

atio

n of

Ext

ract

ed

M

ate

rials

in

R

ock

Geo

Che

m

Sam

ple

Num

ber

Wel

lIn

terv

al*

787-

0010

787-0070

787-0080

787-

0120

787-0170

787-0220

787-

0240

787-0270

787-0300

787-0330

787-0350

787-

0370

787-0390

787-0400

787-042D

787-0430

787-0440

787-0460

787-0480

787-0500

787-0520

787-0530

787-

0540

787-055D

787-056D

787-0580

787-060D

787-0610

787-

0620

787-0630

787-0640

787-065D

787-070D

787-0730

227-

270

1080

- 12

6012

60-

1410

1890-

1950

2610

- 26

7033

60-

3420

3660-

3720

4140-

4180

4580-

4640

5020-

5060

5320-

5380

5620-

5680

5940-

5980

6080

- 61

406380-

6440

6520

- 65

6066

40-

6740

6960-

7040

7240-

7360

7570-

7640

7870

- 7920

8050-

8070

8190-

8220

8350-

8370

8490

- 8520

8790-

8820

9080

- 91

309250-

9270

9390

- 94

209540-

9570

9700

- 97

209860-

9890

1059

0-10

610

1104

0-11

060

18 58 73 39 60 34 21 19 35 16 20 55 677

595

414

1148 283

591

227

229

121 42 27 20 76 14 17 59 36 29 14 16 86 14

Total

Extract

(ppm)

18 58 73 39 60 34 21 19 35 16 20 55 677

595

414

1148 283

591

227

229

121 42 27 20 76 14 17 59 36 29 14 16 86 14

Para

ffin

-Naphthene

(ppm)

- - - - - - - - - - - 136 96 81 205 47 138 58 45 33 - - - - - - - - - - - - -

Arom

atic

(ppm

)

- - - - - - - - - - - 213

181

124

244 87 158 92 99 32 - - - - - - - - - - - - -

Tota

l(ppm)

» - - - - - - - - - - - 349

277

205

449

133

297

150

144 64 - - * - - - - - - - - - -

Sulfur

(ppm

)

«. - - - - - - - - - - - - - - - - * - - - - - -.

- . - . - - - - -

Prec

iptd

.Asphaltene

(ppm

)

10 23 44 14 20 13 13 1 12 1 6 31 71 77 43 55 80 49 27 20 17 19 8 14 51 9 7 9 4 9 3 9 40 6

Nonhydrocarbons

Eluted

Noneluted

NSO'

S NS

O'S

Total

(ppm)

(ppm)

(ppm

)

95 95 64 119 65 92 45 60 35

163

145

101

525 5

152 5 5 5

328

317

208

699

150

294 77 85 57

* In

fe

et

PPM

va

lue

son

a

wpin

ht/u/p

-fnhf-

Table

11 (Continued)

C. Composition

of E

xtra

cts

GeoChem

Samp

leNu

mber

787-001 D

787-007D

787-008D

787-01 2D

787-0170

787-0220

787-0240

787-0270

787-0300

787-

0330

787-0350

787-0370

787-

039D

787-

0400

787-042D

787-0430

787-

0440

787-0460

787-0480

787-050D

787-052D

787-0530

787-

0540

787-0550

787-0560

787-0580

787-

0600

787-

0610

787-0620

787-

0630

787-064D

787-

0650

787-070D

787-0730

Well In

terv

al

227-

270

1080-

1260

1260-

1410

1890

- 1950

2610

- 26

7033

60-

3420

3660-

3720

4140-

4180

4580-

4640

5020-

5060

5320-

5380

5620-

5680

5940

- 5980

6080-

6140

6380-

6440

6520

- 65

6066

40-

6740

6960-

7040

7240

- 7360

7570

- 7640

7870

- 79

2080

50-

8070

8190-

8220

8350

- 83

7084

90-

8520

8790-

8820

9080-

9130

9250-

9270

9390

- 94

2095

40-

9570

9700

- 97

2098

60-

9890

1059

0-10

610

1104

0-11

060

Hydrocarbons

Paraffin-

Nap

hthe

ne

Aro

ma

tic%

% P

N/A

rom

Sulfur

N

on

hyd

roca

rbo

ns

Elu

ted

Non

elut

ed

NSO

'S

NSO

'S

20.1

16.1

19.6

17.9

16.5

23

.42

5.7

19.8

30.0

31

.530.5

30

.02

1.2

30

.62

6.8

40

.443.0

26.1

0.6

40

.53

0.6

50

.84

0.5

40

.87

0.6

40

.46

1.03

14.0

15.9

15.5

10.3

22.9

15.6

19.9

26.2

28.7

24.0

24.4

24.4

45.8

1.8

25.8

2.2

2.3

4.3

ecip

itd

.ip

halte

ne

%

57.1

40

.06

0.0

35

.533.3

37.5

60

.07.

13

3.3

9.1

29 A

55.6

10.4

13.0

10.4

4.8

28

.28

.311.8

8.7

13.9

44

.43

0.0

71.4

66

.26

3.6

38.5

16

.01

0.3

30.4

18

.257

.146.4

HC

'S

Asp

h/N

SO

%

. .

- - - - - - - - - - - 0.2

7

51

.60

.32

4

6.6

0.2

6

49

.60.0

9

39.1

1.14

4

7.1

0.2

0

50

.30

.53

66.2

0.31

62.8

0.4

2

53

.0. - - - - . - - . - - -

HC

/Non

HC

1.07

0.8

70.

980.

640.

891.

011

.96

1.69

1.13

41.7

Table

12-A

Saturate H

ydrocarbon A

nalyses

Summary

of P

araffln-Naphthene

Distribution

GeoC

hem

Samp

leNumber

787-

001 D

787-

0070

787-0080

787-

01 2D

787-

01 7D

787-022D

787-024D

787-

027D

787-030D

787-033D

787-

035D

787-0370

787-039D

787-040D

787-

042D

787-043D

787-

0440

787-

046D

787-0480

787-0500

787-0520

787-0530

787-0540

787-0550

787-

0560

787-0580

787-0600

787-0610

787-

0620

787-0630

787-

0640

787-0650

787-0700

787-

0730

Well In

terv

al*

227-

270

1080-

1260

1260

- 1410

1890-

1950

2610

- 26

703360-

3420

3660-

3720

4140

- 41

8045

80-

4640

5020

- 5060

5320-

5380

5620

- 56

805940-

5980

6080-

6140

6380-

6440

6520-

6560

6640-

6740

6960-

7040

7240-

7360

7570-

7640

7870-

7920

8050

- 80

708190-

8220

8350-

8370

8490-

8520

8790

- 88

2090

80-

9130

9250-

9270

9390-

9420

9540

- 95

709700-

9720

9860-

9890

1059

0-10

610

1104

0-11

060

%Paraffin

12.7

10.0 8.5

6.6

5.9

6.0

9.2

9.3

6.9

8.6

11.2

30.8

38.6

31.7

33.7

48.3

39.1

43.6

34.8

32.0

12.9 7.6

12.4 6.7

11.7

14.1 9.1

9.2

12.1 8.3

6.0

6.0

9.3

9.9

%%

C-P

Isoprenoid N

apht

hene

Index

A

2.3

1.2

1.1

0.6

1.1

1.0

1.1

1.9

1.2

1.3

2.3

5.1

6.3

9.4

3.8

4.7

3.4

3.5

3.5

3.2

1.9

0.8

1.8

0.6

1.8

1.2

1.1

1.4

1.9

1.4

0.5

0.4

1.2

1.6

85.1

88.8

90.5

92.9

93.0

93.0

89.7

88.8

91.9

90.0

86.5

64.1

55.1

58.8

62.5

47.0

57.5

52.9

61.7

64.9

85.3

91.6

85.8

92.7

86.6

84.7

89.8

89.4

86.0

90.2

93.5

93.6

89.5

88.5

1.31

1.15

1.25

1.23

1.25

1.18

1.12

1.08

1.11

1.10

1.07

1.09

1.07

1.08

1.10

1.09

1.07

1.07

1.07

1.08

1.16

1.12

1.08

1.08

1.07

1.06

1.08

1.18

1.20

1.08

1.11

1.09

1.04

1.09

C-P

Index

B

_ .1.79

2.10

1.59

1.61

1.22

1.59

1.31

1.27

1.29 - _ - -

1.28 - . -

1.35

1.34

1.40

1.16 - «.

1.43

1.37 -

1.31

1.36

1.38 -

1.30

ip!9/1p20

1.30

0.55

0.74

0.47

1.46

1.23

0.84

0.90

0.90

1.74

1.34

4.65

7.74

13.31

6.00

5.79

4.09

4.28

3.37

3.39

1.40

0.49

1.15

0.23

0.76

0.58

0.58

0.90

0.55

0.74

0.15

0.09

0.63

0.51

* In f

eet

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in c^ror ror r r r CMincMvDv£>CMOinr r , «3-ooocMLnror roror incMr r r ..................................CJ OOOOOOOOOOOO^-CMVOrs-CMrom^CMi r OOOOOOOOOOOc

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C I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I t-sOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO'

QOOQOOOOOOOOOOOOQOOCIOOCIOOOOOOOOOOO

U OOOr r o; OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO.O I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I "^ '

> ooooaoaoaoooaoaoaoooooooaoaooooocDooooooooaoooaoaoaoaoooaoaoooooaooo*

53

Table 13

Visual Kerogen Assessment Worksheet

TYPE OF

ORGANIC

COLOR OFMATTER

STATE OF

ORGANIC MATTERDEPOSITIONAL

VIRONMFNTMATURATION INDEX

MATTER ORGANIC

2 or more maturation pop ~2I to 20% Ulati °nS

20% to 45S

45% to 802 BOX 4

W;H;Am (Al)-C

W;C;Am (Al)-H

W;Am (AI)-.H (C)

W;Am A1)-C;H

W;Am(Al)-H-C;

Wr.CitiAm.-H W-C;-;Am-H

W-C ;^ W-C;Am;H

* Mineral charcoal in sampl<

54

Table 14

Vitrinite Reflectance Summary


787-008D

787-024D

787-030D

787-035D

787-040D

787-042D

787-044D

787-046D

787-048D

787-050D

787-052D

787-054D

787-056D

787-060D

787-063D

787-065D

Depth (feet)

1260-1410

3660-3720

4580-4640

5320-5380

6080-6140

6380-6440

6640-6740

6960-7040

Population

Population

Population

7240-7360

7570-7640

Population

Population

Population

7870-7920

8190-8220

8490-8520

9080-9130

9540-9570

9860-9890

Number of

Readings

*

40

*

*

40

44

40

43

1 2

2 16

3 25

40

47

1 4

2 11

3 32

28

41

*

*

*

*

Minimum Reflectance (X Ro)

-

0.33

-

-

0.90

0.80

0.74

0.74

0.74

1.14

1.63

0.49

0.27

0.27

0.69

1.00

1.15

1.56

-

-

-

-

Maximum Reflectance (X Ro)

-

0.96

-

-

1.29

1.42

1.41

2.14

0.96

1.54

2.14

1.52

1.94

0.42

0.99

1.94

1.80

2.26

-

-

-

-

Average Reflectance (% Ro)

-

0.65

-

-

1.09

1.18

1.17

1.40

0.85

1.34

1.89

1.07

0.99

0.35

0.87

1.52

1.56

1.95

-

-

-

-

Note:* Insuffient kerogen return to prepare plug.

55

APPENDIX 3

Analytical Data on Maturity of Coal Samples

Alaska Peninsula Coals

Item

Pan Am

1

2

3

4

5

6

7

Pan Am

8

9

10

Pan Am

11

12

13

14

15

16

Depth Fm. Organic Interval Carbon

(ft.) wt. %

Hoodoo Lake No.

1,220-50

1,940-70

3,440-70

4,430-90

5,840-70

7,460-90

8,030-40

Hoodoo Lake No.

5,620-40

6,780-6,800

7,580-90

David River No.

4,220-50

7,220-30

8,490-8500

9,660-70

10,240-40

12,240-50

1

54.6

58.4

47.0

58.8

51.3

36.8

59.3

2

40.1

49.1

76.6

1-A

43.2

63.0

13.4

59.4

13.8

0.25

Pyrolytic HC yield

wt. %

9.34

7.35

5.17

6.82

2.84

4.30

10.37

6.96

5.76

7.79

9.59

14.97

0.39

7.95

2.66

Volatile HC content

ppm

n.d.*

ii

ii

ii

ii

n

ii

4,230

7,500

5,250

5,260

9,090

200

9,870

1,830

Pyrol. HC Org. Carbon

%

17.1

12.6

11.0

11.6

5.54

11.7

17.5

17.4

11.7

10.17

22.2

23.4

2.9

13.4

19.3

Tmax °C

399

395

391

393

455

458

453

490

509

511

455

453

481

506

478

Cities Service Painter Creek No. 1

17 1,018-19 29.1 4.41 830 15.2 489

56

APPENDIX 3 (continued)

Depth Fm. Organic Interval Carbon

Item (ft.) wt. %

AMOCO Cathedral River No. 1

18 9,400-10 7.5

19 12,200-10 5.7

20 14,100-10 1.5

Pyrolytic HC yield

wt. %

4.76

2.45

0.34

Volatile HC content

ppm

17,380

1,690

no

Pyrol. HC Org. Carbon

%

63.5

(40.3)

TmaxQC

471

461

467

*n.d. = no data

Data supplied by George Claypool, U.S. Geological Survey, Denver, Colorado

57

APPENDIX 4

Thin Sections

All thin sections are grain mounts of representative grains selected from bags of washed cuttings except core chips denoted by C after depth.

Cities Service Painter Creek No. 1500-530 SS & SLST., Volcaniclastic.

1035-1036 Cgl. with clasts of vfg basalt and andesite. 1037-1038 SS, Volcanolithic subwacke, laumontite? vein filling. 1310-1340 Cgl. - With alt. basalt & andesite, granodiorite, stretched

metachert.1700-1710 SS - Qtz. & chert & aphanitic voles.,SLST. 2700-2710 Cgl. - Alt. basalt, granodiorite, qtz-hbl. schist, epidote

granulite.3940-3950 Cgl. - as above. 3980-3990 Cgl. - as above.5340-5350 Cgl. - alt. basalt & diabase, granodiorite & gabbro, vole. SS. 6050-6060 Cgl. - chert, qtzite, granodiorite, alt. mafics?, rare SS. 6070-6080 Cgl. - as above: higher % of alt. mafic voles. 7000-7010 Cgl. - mafic voles, alt. to Ab-Ep; granodiorite, jadeitized

sed. rocks?7410-7420 Cgl. - Alt. voles.;chert, qtzite, lithic subwacke SS. 7800-7810 Cgl. - Alt. voles. & granodiorite; jadeite granulite, chlorite-

prehnite bearing porphyry.

Gulf-AlaskaGO Port Heiden No. 111,833-34 C Lt. gray alt. dacite microbreccia or crs. sandy tuff. 11,955-56 C Alt. vfg vesicular dacite porphyry. 15,000-01 C Hbl. - qtz. diorite, med. grd., equigranular. 15,014-15 C Hbl. - Biot. qtz. diorite, slightly altered.

Gulf Sandy River Federal No. 111,681-11,686 C SS - Qtz. - lithic arenite (liths. = chert, slst. & vole.

porph.).12,100-13,105 C SS - Qtz. lithic subwacke, heulandite? cement. 13,003-13,009 C SS - med. grd.feldspathic arenite, minor qtz. & vole, liths. 13,009-13,015 C Mudstone, v. dark gray, sheared, w/calcite veins.

Pan American Hoodoo Lake No. 11040-1070 SS and SLST., tuffaceous matrix, angular plag., pumice and

glass shards.3140-3170 SS and SLST., as above but contains rare diatoms. 4190-4220 Loose sand grains; Qtz., chert, plag., qtzite, vole, porph.,

garnet, m'cline, biot., brn.- hbl., slst.

Pan American David River No. 1A3270-3480 SLST. - Dark brown, rare rounded sand-size qtz. grains.4410-4740 SLST. - As above, carbonaceous; rare med. grd. vole. lith. SS.6750-7100 SS - silty, v.f.g. to med. grd.; some tuffaceous matrix.7220-7500 SLST. - sandy, abundant carbonaceous laminae.7950-8000 SS, f-med. grd., vole, liths.>Qtz.>chert, (vole. lith. arenite)9320-9330 SS - Albitized, chloritized volcano-lithic arenite.

58


Pan American David 10,680-10690 11,640-11,710 11,740-11,750 11,880-11,890 11,980-11,990 12,120-12,130 12,210-12,220 12,870-12,880 13,350-13,360 13,430-13,440

River No. 1ASLST. - dark brown, laminated, carbonaceous.SS - med. - crs. grd.; chert>plutonic liths.>qtz., CO3 cement.SLST. - It. brn., carbonaceous>SS, feldspathic-volc. lith. wackSS - crs. - v. crs. grd., Qtz.>plag.>chert>volc. liths.SS - as above, recrystallized qtz. cement & abundant zeolites.Sandy SLST - carbonaceous; probably vole, derived.SS crs. - v.crs. grd., plag.>volc. liths>qtz., chloritic cementSLST. - and f. grd. SS; strongly sericitized.Sandy SLST. - brownish green chlorite?, vole, derived.SS, similar to 12,210-12,220.

AMOCO Cathedral River No. 1690-700 Sandy SLST. - massive, quartzofeldspathic.2800-2810 SS - med. grd., arkose w/grn. hbl. laumontite veins & cement.3700-3710 Sandy SLST. - same as 690-700.4900-4910 SLST. - gray, massive; SS-v.f.g., arkosic wacke and arenite.5500-5510 SS - f. grd., feldspathic wacke, angular grains.7400-7410 SS - f. grd., volc.-lithic feldspathic wacke, abund. hbl. & Cp*7600-7610 SS - same as 7400-7410; lithics altering to clay minerals.8600-8610 Calcareous mudstn. - sandy, dark brown, carbonaceous.

11,690-11,700 Sandy mudstn. - carbonaceous laminae.13,300-13,310 SS - volcanolithic subwacke & pebble cgl.; sparry CO3 veins.14,290-14,300 Mixed liths. - sandy calcarenite, lam. carbonaceous SLST.,

calcareous arkosic SS.

Pan Am Hoodoo Lake No. 21980-2010 4480-4680

7510-76008100-8200

10,210-10,22010,480-10,49011,240-11,243

SS - well sorted, med. grd., fspathic-vole 1 lithic subwacke. SS - mostly basaltic lithic frags., various grain sizes,

subwacke texture.SS - well sorted, f. grd., volcanolithic wacke & subwacke. SS - volcaniclastic, with abund. CO3 matrix, basalt, diabase. Diabase & SS/med. to f. grd., qtz.-feldspar arenite, SLST. Diabase, gabbro, rare sandy SLST., and arkose SS. (T.D.) Tightly packed arkosic SS, SLST., diabase, rare basalt.

grd.

Abalt.biot.ccgl.C03Cpxcrs.Ep.hbl.liths.m'clineqtz.qtzitesed. rxs.SLST.SSvfg.vole. SS

Abbreviation Key

albitealteredbiotitecore sampleconglomeratecalciteclinopyroxenecoarse grainedepidotehornblendelithic or rock fragmentsmicroclinequartzquartzitesedimentarysiItstonesandstonevery fine grainedvolcaniclastic sandstone

59

APPENDIX 5

Paleontology

Sample intervals (in feet)

Cities Service Painter Creek No. 1 1800-1810 Barren 2280-2310 Barren

Gulf, Sandy River Federal No. 1 11,686-11,691 Barren

Pan Am, Hoodoo Lake No. 12590-2840 Barren4010-4180 Barren

Section-Township-Range (Seward Meri-dian)

14-35S-51W

10-46S-70W

21-50S-76W

Pan Am, Hoodoo Lake No. 1519-1710 1710-1830 2100-2250

3690-3930

54 DO- 5800- 6600- 7510- 7680-

Age:-5600-6000-6800-7700-7690

Age:8350-8540 8650-8660 9480-9490 9900-9910

11,090-11,100

Pan Am David River No. 3270-3480

4410- 6750- 7270- 9000-

11,290- 12,110- 12,370- 12,970- 13,ISO- 13,290- 13,360-

13,650-

474071007500910011,30012,12012,38012,98013,19013,30013,37013,660

2 35-50S-76W Barren BarrenBATHYSIPHON sp. Sponge Spicules ELPHIDIUM CALIFORNICUM Cook GLOBOBULIMINA PACIFICA? Cushman Probably Early Tertiary Barren Barren Barren BarrenELPHIDIUM CALIFORNICUM Cook Diatom (pyritized) Probably Early Tertiary Barren Barren Barren Barren Barren

1-A 12-50S-80W Plant and wood debris Bivalve fragments Coaly Coaly Barren Barren Barren Barren Barren Barren Barren Barren Barren Barren

60


AMOCO Cathedral River No. 1 29-51S-83W100-1000 Barren1100-1930 Barren3700-4700 Barren6500-7400 Barren8600-9600 Barren9700-10,600 Barren

10,700-11,700 Barren11,800-12,800 Barren12,900-14,000 Barren14,220-14,300 Barren

Palynomorphs

Cities Service Painter Creek No. 1 1800-1810

ALNUS MOMIPITES

2280-2330MOMIPITES NYSSAEPOLLENITES

Age: Paleocene or Eocene

Gulf Sandy River Federal No. 1 11,686-11,691

LARIX/PSEUDOTS UGA PICEA PINUS TSUGA ALNUS BETULA PTEROCARYA

Age: Neogene, probably from Bear Lake Formation

Pan Am Hoodoo Lake No. 1 2590-2840 feet

LARIX/PSEUDOTSUGAPICEAPINUSTSUGATaxodiaceae/CupressaceaeALNUSBETULAULMUS/ZELKOVACENTROSPERMAELONICERACyperaceae

4010-4180 feetPICEAPINUSTaxiodiaceae/CupressaceaeTSUGAALNUSBETULAPIEROCARYA

Cypearaceae

61


Pan Am David River 1-A (continued) 6750-7100 feet

PICEAPINUSTaxodiaceae/CupressaceaeALNUSBETULAFAGUScf. QUERCUSPTEROCARYAILEX

9000-9100 feet - Pollen sparse PINUS TSUGA? ALNUS CARYAcf. QUERCUS

Age: 3270-9100 feet Eocene? Tolstoi or possibly Stepovak Formation

11,290-11,300 feetPICEA ALNUS CARYA PTEROCARYA MOMIPITES TILIAEPOLLENITES PISTILIPOLLENITES

Age: Early to middle Eocene

12,110-12,120 Barren12,370-12,380 Barren12,970-12,980 Barren13,180-13,190 Barren13,290-13,300 Barren13,360-13,370 Barren13,650-13,660 Barren

62


Pan Am Hoodoo Lake No. 1 (continued) 7460-7550 feet

PICEAPINUSTSUGAALNUSBETULAILEX?Ericales

8000-8030 feetPICEA PINUS TSUGA ALNUS BETULA Ericales

Age: Later half of Miocene

Pan Am Hoodoo Lake No. 2 7680-7690 feet 8530-8540 8650-8660 9480-9490 9850-9860 9900-9910

11,090-11,100All barren, except for 7680-7690 that contained non-diagnostic rare

palynomorphs.

Pan Am David River 1A 3270-3450 feet

PICEAPINUSTaxodiceae/CupressaceaeALNUScf. QUERCUSPTEROCARYAULMUS/ZELKOVATILIAHALESIA?

4410-4740 feetPICEAPINUSTaxodiaceae/CupressaceaeALNUScf. QUERCUSCARYAULMUS/ZELKOVAEricales

63

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