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Rod Holcombe Holcombe Coughlin Oliver 2010
ORIENTED DRILL CORE PROTRACTOR TEMPLATES
CONTENTS
Wrap around beta angle protractors for most common core sizes
Wrap-around alpha/beta angle protractor for HQ and NQ core
Scaled logging sheets for simplified rapid logging
The templates are a copyright product of Holcombe Coughlin Oliver. Theymay be used and distributed freely provided the Holcombe Coughlin Oliverlogo remains visible to identify our authorship.
These templates are the printer-resolution attachment to the Holcombe CoughlinOliver publication: HCO_oriented_core_procedures, which can be downloadedfrom:http://www.holcombecoughlinoliver.com/downloads/HCO_oriented_core_procedures.pdf
HTTP://www.holcombecoughlinoliver.com/
http://www.holcombecoughlin.com/downloads/HCA_oriented_core_procedures.pdfhttp://www.holcombecoughlin.com/downloads/HCA_oriented_core_procedures.pdfhttp://www.holcombecoughlin.com/downloads/HCA_oriented_core_procedures.pdfhttp://www.holcombecoughlinoliver.com/http://www.holcombecoughlinoliver.com/http://www.holcombecoughlinoliver.com/http://www.holcombecoughlin.com/downloads/HCA_oriented_core_procedures.pdfhttp://www.holcombecoughlin.com/downloads/HCA_oriented_core_procedures.pdf -
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Oriented core wrap-around protractors 2 Holcombe Coughlin Coughlin
ORIENTED DRILL CORE WRAP-AROUND PROTRACTORS
Each of the following pages contains a protractor for a specific size of drill core.Choose the appropriate chart for the drill core size. Check the core diameter to choose theappropriate template within each core size grouping.The protractors are in two groups: beta angle protractors and alpha/beta angle protractors.In practice I find that the beta angle protractor alone is best as it is least cluttered with lines(and alpha angles are easily measured using a protractor).
IMPORTANTSet page scaling to NONE in Print manager and print the protractor on transparent film(laser printer is best). Heavy duty film is best. I use HiClear Crystal Clear 200 micron PVCReport Cover film.
To use the protractor
beta anglesAlign the reference line (can be either a bottom mark or top mark) with the central zero line- ensuring that the 'downhole' arrows point down the core.Wrap the protractor around the core
Read off the clockwise 360 beta angles to the ellipse (beta angle) using the spaced verticallines.
alpha angles using alpha angle protractorAlign the reference line with the bottom of the ellipse made by the plane to be measured.Wrap the protractor around the core.Use the curved alpha angle lines to estimate the angle between the ellipse and the core axis(alpha angle).
Making your own:
It is a relatively simple matter to construct a wrap-around protractor to measure beta angles
in oriented core using any software drawing package. The procedure is to measure thecircumference of the core and divide it by 360 to calculate the spacing of a 1-degree betaangle. A set of parallel lines is then drawn, using a convenient spacing (eg. 10 degrees).Once constructed the protractor is printed onto stiff plastic film using a laser printer. (Laserprinters give a finer, more durable line than most ink-jet printers). I use HiClear CrystalClear 200 micron PVC Report Cover for the film.
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Oriented core wrap-around protractors 3 Holcombe Coughlin Coughlin
NQ (47.6mm diam; 149.54 mm circumference)
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Oriented core wrap-around protractors 4 Holcombe Coughlin Coughlin
NQ (47.6mm diam; 149.54 mm circumference)
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Oriented core wrap-around protractors 5 Holcombe Coughlin Coughlin
NQ (47.6mm diam; 149.54 mm circumference)
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Oriented core wrap-around protractors 6 Holcombe Coughlin Coughlin
NQ2" (50.6mm diam; 158.96 mm circumference)
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Oriented core wrap-around protractors 7 Holcombe Coughlin Coughlin
NQ2" (50.6mm diam; 158.96 mm circumference)
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Oriented core wrap-around protractors 8 Holcombe Coughlin Coughlin
NQ2" (50.6mm diam; 158.96 mm circumference)
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Oriented core wrap-around protractors 9 Holcombe Coughlin Coughlin
NQ-3 (45mm diam; 141.37mm circumference)
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Oriented core wrap-around protractors 10 Holcombe Coughlin Coughlin
NQ-3 (45mm diam; 141.37mm circumference)
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Oriented core wrap-around protractors 11 Holcombe Coughlin Coughlin
BTW (42mm diam; 131.95mm circumference)
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Oriented core wrap-around protractors 12 Holcombe Coughlin Coughlin
NTW (57.1mm diam; 179.38mm circumference)
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Oriented core wrap-around protractors 13 Holcombe Coughlin Coughlin
HQ (63.5mm diam; 199.49mm circumference)
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Oriented core wrap-around protractors 14 Holcombe Coughlin Coughlin
HQ (63.5mm diam; 199.49mm circumference)
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Oriented core wrap-around protractors 15 Holcombe Coughlin Coughlin
HQ (63.5mm diam; 199.49mm circumference)
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Oriented core wrap-around protractors 16 Holcombe Coughlin Coughlin
HQ variant (62.1mm diam; 195.09mm
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Oriented core wrap-around protractors 17 Holcombe Coughlin Coughlin
HQ-3 (61.1mm diam; 191.95mm
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Oriented core wrap-around protractors 18 Holcombe Coughlin Coughlin
HTW (71mm diam; 223.05mm circumference)
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Oriented core wrap-around protractors 19 Holcombe Coughlin Coughlin
PQ (85mm diam; 267.04mm circumference)
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Oriented core wrap-around protractors 20 Holcombe Coughlin Coughlin
PQ-3 (83mm diam; 260.75mm circumference)
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Oriented core wrap-around protractors 21 Holcombe Coughlin Coughlin
LOW RESOLUTION LOGGING TEMPLATES
The following pages contain logging templates at different scales for rapid low resolutionsummary logging of drill-core.
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Oriented core wrap-around protractors 22 Holcombe Coughlin Coughlin
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Oriented core wrap-around protractors 23 Holcombe Coughlin Coughlin
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Oriented core wrap-around protractors 24 Holcombe Coughlin Coughlin
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ABOUT US:
Holcombe Coughlin Oliver is a consortium of three
independent international geological consultancies
(European and Australian-based) specialising in the
application of modern structural geology and
hydrothermal fluid geochemistry to the global
resource industry
Contact Rod:holcombecoughlinoliver.com
PO Box 593, Kenmore, Qld 4069, Australia:
Ph +61 733786326
Contact Tim:[email protected]
Contact Nick:[email protected] Box 3533, Hermit Park, Qld 4812, Australia:
Ph +61 417764880
Rod Holcombe (PhD) has over 40 years of structural analysis
experience in orogenic systems as both a teaching/research
academic and a consultant to the minerals exploration
industry. He is a specialist in the structural analysis of complex
metamorphic terranes and shear zones with experience in
Precambrian and Phanerozoic terranes in Australia, New
Zealand, USA, Brazil, Argentina, Peru, Uruguay, Thailand, Laos,
East and West Africa, the Balkans, Finland, and Siberia, and
has considerable experience in structural and mapping short
course training for professional geologists.
Computer applications, manuals, and other products
developed by Rod for use by structural and explorationgeologists can be found at:
http://www.holcombe.net.au/software/
Tim Coughlin (MSc, PhD) is a structural geologist with
particular experience in frontier target generation and risk
analysis in emerging and developing countries.
Tim has over 25 years of both mineral and petroleum
exploration experience. He has worked on target-generation
and deposit-scale problems in the central and northern Andes,
the western Tethyan of the Balkans and Caucasus regions, the
Papuan fold belt, northern China, Siberia and the Russian FarEast, and eastern Australia. Tim has consulted to a wide range
of resource industry clients, has held senior staff positions
with well-known medium and large-scale companies, and has
successfully guided an international exploration company
from start-up to development.Nick Oliver (PhD) is a specialist in mineralised hydrothermal
systems, particularly in strongly structured environments.
Experience includes IOCG, U and Mo (Mount Isa region),
sediment and volcanic-hosted base metals (Century Zn, Mount
Isa Cu-Pb-Zn, Chillagoe skarn Cu-Zn-Au, Finland Zn-Cu),greenstone-, BIF- and black slate-hosted vein gold deposits
(Yilgarn, Brazil, Siberia), giant iron ores (Pilbara, Transvaal),
and epithermal gold (New Zealand, Australia). Nick provides
practical approaches to deal with complex alteration systems,
restructuring of geochemical datasets and strategies, and
identification of fluid pathways in complexly deformed rocks.
He has 20 years experience in industry-based research and
focussed short course training, including 13 years as the
Professor of Economic Geology and Director of the Economic
Geology Research Unit at James Cook University
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]://../Computer/web/HCO/holcombe/RodHCOHome.htmlhttp://../Computer/web/HCO/holcombe/RodHCOHome.htmlhttp://../Computer/web/HCO/holcombe/RodHCOHome.htmlhttp://www.holcombe.net.au/software/http://../Computer/web/HCO/HCO_about_us.htmhttp://../Computer/web/HCO/HCO_about_us.htmhttp://../Computer/web/HCO/HCO_about_us.htmhttp://../Computer/web/HCO/oliver/NickHCOHome.htmlhttp://../Computer/web/HCO/oliver/NickHCOHome.htmlhttp://../Computer/web/HCO/oliver/NickHCOHome.htmlhttp://../Computer/web/HCO/oliver/NickHCOHome.htmlhttp://../Computer/web/HCO/HCO_about_us.htmhttp://www.holcombe.net.au/software/http://../Computer/web/HCO/holcombe/RodHCOHome.htmlmailto:[email protected]:[email protected]