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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 #73 (24-7 Arch #73)

49-037-05577

 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 #73 (24-7 Arch #73)
Arch #71 (11-6 UPRR Arch #71)

49-037-05671

 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 #71 (11-6 UPRR Arch #71)
Arch #67 (11-5 Forest et al Arch #67)

49-037-05648

 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 #67 (11-5 Forest et al Arch #67)
Arch #51 (11-2 UPRR Arch #51)

49-037-05651

 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 #51 (11-2 UPRR Arch #51)
Arch #49 (1-3 UPRR Arch #49)

49-037-05697

 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 #49 (1-3 UPRR Arch #49)
14-4-Federal

49-005-24762

 Diamond Shamrock PRB Hartzog Draw Campbell, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 14-4-Federal
Anniemary Fed #31-24 (Hartzog Draw Unit 5242W)

49-005-24384

 Diamond Shamrock PRB Hartzog Draw Campbell, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Anniemary Fed #31-24 (Hartzog Draw Unit 5242W)
N. Grieve Unit 1-26

49-025-20797

 Diamond Shamrock Wind River North Grieve Natrona, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on N. Grieve Unit 1-26
N. Grieve Unit 2-23

49-025-20813

 Diamond Shamrock Wind River North Grieve Natrona, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on N. Grieve Unit 2-23
N. Grieve Unit 3-23

49-025-20818

 Diamond Shamrock Wind River North Grieve Natrona, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on N. Grieve Unit 3-23
DOE Fed. Sooner 7-21

05-123-13133

 Diversified Operating Corp. Denver Sooner Weld, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on DOE Fed. Sooner 7-21
Lillie #2-8

05-123-13638

 Diversified Operating Corp. Denver Lilli Weld, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Lillie #2-8
Wild Horse 8-6 (Nickerson 8-6)

05-123-12311

 Diversified Operating Corp. Denver Wild Horse Weld, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Wild Horse 8-6 (Nickerson 8-6)
#1-13 Frank

05-123-10687

 Dome Petroleum Corp. Denver Wattenberg Weld, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #1-13 Frank