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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
Arch Unit 109 (Arch Unit #109-2-6)

49-037-20067

 Forest Oil GGR Arch Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Arch Unit 109 (Arch Unit #109-2-6)
Arch Unit 106 (Arch Unit #106-12-15)

49-037-20046

 Forest Oil GGR Arch Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Arch Unit 106 (Arch Unit #106-12-15)
Arch Unit 70 (1-8 Forest et al Arch #70)

49-037-05689

 Forest Oil GGR Arch Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Arch Unit 70 (1-8 Forest et al Arch #70)
Arch Unit 80 (10-1 Gov’t Arch #80)

49-037-05652

 Forest Oil GGR Arch Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Arch Unit 80 (10-1 Gov’t Arch #80)
Arch Unit 81 (3-1 UPRR Arch #81)

49-037-05681

 Forest Oil GGR Arch Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Arch Unit 81 (3-1 UPRR Arch #81)
Jackson BN

25-109-21047-00-00

 Gulf Oil Corp Williston Wildcat Wibaux, MT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Jackson BN
Champlin 9-1

49-021-20323

 Golden Buckeye DC Silo Laramie, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Champlin 9-1
Collins #1

49-005-20995

 Fred Goodstein PRB Wildcat Campbell, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Collins #1
57-4-1 Govt (Goodstein-Beard)

49-005-21708

 Fred Goodstein PRB Fence Creek Campbell, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 57-4-1 Govt (Goodstein-Beard)
57-4-1 Govt

49-005-20921

 Fred Goodstein PRB Fence Creek Campbell, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 57-4-1 Govt
55-4-1 Govt

49-005-20989

 Fred Goodstein PRB Wildcat Campbell, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 55-4-1 Govt
Breeden 2-17H

49-021-20836

 Halliburton DC Wildcat Laramie, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Breeden 2-17H
Continental #1-4

05-043-06006

 Forest Oil Canyon City Embayment Florence-Canon City Fremont, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Continental #1-4
MacKenzie 1-3

05-043-06008

 Forest Oil Canyon City Embayment Florence-Canon City Fremont, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on MacKenzie 1-3