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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 #48 (7-6 UPRR Arch #48)

49-037-05667

 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 #48 (7-6 UPRR Arch #48)
Arch #43 (12-6 Forest Arch #43)

49-037-05637

 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 #43 (12-6 Forest Arch #43)
Arch #11 (12-1 Gov’t Arch #11)

49-037-05624

 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 #11 (12-1 Gov’t Arch #11)
Casada #1 (Federal Unit 5202)

49-005-24635

 Exxon Oil Co. 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 Casada #1 (Federal Unit 5202)
#1-8 C.T Ranch

33-049-00137-00-00

 Enstar Pet. Inc. Williston Wildcat McHenry, ND-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #1-8 C.T Ranch
Powder Mtn Unit 1-13E

49-037-24237

 Enron GGR Cepo Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Powder Mtn Unit 1-13E
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)
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 #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 #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 #75 (16-1 State Arch #75)

49-037-05604

 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 #75 (16-1 State Arch #75)
Arch #9 (18-2 Gov’t Arch #9)

49-037-05617

 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 #9 (18-2 Gov’t Arch #9)
Arch Unit 10 A (13-3 UPRR Arch #10A)

49-037-05618

 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 10 A (13-3 UPRR Arch #10A)
Arch Unit 101 (Arch Unit #101-18-10)

49-037-20029

 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 101 (Arch Unit #101-18-10)