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Core Repository for Earth Sciences (CORES)

Core Repository for Earth Sciences (CORES)

The joint CGS/Mines Core Repository for Earth Science (CORES) showcases a diverse array of rock cores and cuttings, primarily from across Colorado but also including materials from other regions. These samples are invaluable for understanding subsurface geologic conditions, including energy and mineral resources, groundwater systems, and fluid migration pathways. Many cores have associated high-resolution images that allow for remote viewing and analysis. You can browse the map or search the repository by location, formation, or well name to find samples relevant to your area of interest.

This repository is a collaborative effort between the Colorado Geological Survey and the Colorado School of Mines, with funding support from CGS, the U.S. Geological Survey, and Robert J. Weimer.

Special thanks to Matthew “Josh” Shaw, who cataloged and imaged the cores, and to Stephen Sonnenberg for his technical consultation.

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Cores Data

Table of CORES Well Information
Well Name Company Basin Field Location Attributes View more information about
Spearhead Ranch #3

49-009-20434

 Mtn. Fuel Supply PRB Spearhead Ranch Converse, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Spearhead Ranch #3
Spearhead Ranch #2

49-009-20433

 Mtn. Fuel Supply PRB Spearhead Ranch Converse, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Spearhead Ranch #2
6-W Murphy

43-009-15635

 Mtn. Fuel Supply GGR Clay Basin Daggett, UT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 6-W Murphy
State (Colorado) 34-3-59 #3

05-001-06327

 Midwest Oil Denver Poncho Adams, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on State (Colorado) 34-3-59 #3
#2 Ring

33-009-01395-00-00

 Monsanto Williston Mohall Bottineau, ND-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #2 Ring
#1 Knox

33-075-00153-00-00

 Monsanto Williston Wildcat Renville, ND-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #1 Knox
#1 Jackson

33-061-00171-00-00

 Monsanto Williston Wildcat Mountrail, ND-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #1 Jackson
#2 Lamb-Dalton

05-123-08858

 Martin Oil Denver Spindle Weld, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #2 Lamb-Dalton
UPRR #28G

49-037-20695

 Mesa GGR West Desert Springs Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on UPRR #28G
Baughman Farms #1

05-005-06082

 Midwest Oil Denver Peoria Arapahoe, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Baughman Farms #1
Baughman Farms #2

05-005-06091

 Midwest Oil Denver Peoria Arapahoe, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Baughman Farms #2
Baughman Farms #3

05-005-06098

 Midwest Oil Denver Peoria Arapahoe, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Baughman Farms #3
Baughman Farms #4

05-005-06108

 Midwest Oil Denver Peoria Arapahoe, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Baughman Farms #4
1 Brookshire

05-099-06115

 Marlin Oil Anadarko Wildcat Prowers, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 1 Brookshire