geco denca talk

Archaeological Site Potential within the Dominguez-Escalante

National Conservation Area

GeCo in the Rockies September, 2014 By Seth Frame

Grand Junction Field Office

487 Sites

Uncompahgre Field Office

208 Sites

State Historical Preservation Office

1638 Sites and Isolates

Assembling the Data…

679 Archaeological Sites

Topographic Variables

Ecological Variables

Cultural Variables

Site and Survey Information

Biological Variables --------->

Straight Distance to Permanent Water

In Meters

Cost Distance to Permanent Water

In Hours

Tobler’s Hiking Function

• TIME(HOURS)TOCROSS 1 Meter or the reciprocal of Meters per Hour = 0.000166666*(EXP(3.5*(ABS(TAN(RADIANS(slope_deg))+.05))))

Topographic Variables

Ecological Variables

Cultural Variables

Site and Survey Information

Biological Variables --------->

21,845 Model points:

Created at an 1/8th mi interval.

3,793 Non-Site points: Within surveys but outside site

boundaries.

679 point selection:

Random selection of non-site points.

Factor Analysis…

Sensitivity Models…

Analytical Historic Sensitivity Model

Prehistoric Sensitivity Model

All Site Sensitivity Model

Traditional Historic Sensitivity Model

Prehistoric Sensitivity Model

Sensitivity Area

Survey Acreage (mi²)

Sites Site Density per Mile²

Average Site Acreage

High 5,134 (8)

99 12.3 10

Medium 7,942 (12)

195 15.7 3.2

Low 26,995 (42)

276 6.5 1.7

Analytical Historic Sensitivity Model

Sensitivity Area

Survey Acreage (mi²)

Sites Site Density per Mile²

Average Site Acreage

High 6,535 (10)

28 2.7 4.4

Medium 11,512 (18)

40 2.2 4.1

Low 22,124 (35)

41 1.2 2.0

All Site Sensitivity Model

Sensitivity Area

Survey Acreage (mi²)

Sites Site Density per Mile²

Average Site Acreage

High 3,840 (6)

78 13 11.4

Medium 10,944 (17)

262 15 2.8

Low 25,258 (39)

339 9 2.3

Traditional Historic Sensitivity Model

Sensitivity Area

Survey Acreage (mi²)

Sites Site Density per Mile²

Average Site Acreage

High 16,028 (25)

49 2.0 5.5

Medium 4,627 (7)

16 2.2 1.3

Low 19,692 (31)

44 1.4 2.7

Analytical Model Traditional Model

Thank you

Rand Greubel Jon Horn Matt Landt Jack Pfertsh Charlie Reed The Grand Junction and Uncompahgre BLM Field offices The rest of the staff at Alpine Archaeological Consultants