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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
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
Braukmann Farms G-1

05-073-06194

 Energy Reserves Denver Wildcat Lincoln, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Braukmann Farms G-1
Patrick Draw Unit #5

49-037-05399

 El Paso GGR Patrick Draw Sweetwater, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Patrick Draw Unit #5
Tribal 11-19

25-085-21725-00-00

 East Fort Peck Exp Williston Wildcat Roosevelt, MT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Tribal 11-19
Harvey Gray 21-26H

25-085-21706-00-00

 East Fort Peck Exp Williston Wildcat Roosevelt, MT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Harvey Gray 21-26H
#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
Fed. Sooner 12-9

05-123-13428

 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 Fed. Sooner 12-9
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 Chapman

05-001-06557

 Davis Oil Denver Jamboree Adams, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #1 Chapman
Stope Leach 4

N/A - CSM Mine Well

 CSM/USBM D-Right Upper Drift Clear Creek, CO-US ButtsS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Stope Leach 4
Stope Leach 3

N/A - CSM Mine Well

 CSM/USBM D-Right Upper Drift Clear Creek, CO-US ButtsS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Stope Leach 3
Stope Leach 1

N/A - CSM Mine Well

 CSM/USBM D-Right Upper Drift Clear Creek, CO-US ButtsS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Stope Leach 1