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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
USA #42-28-43

33-053-00948-00-00

 Shell Oil Williston Mondak McKenzie, ND-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on USA #42-28-43
#1 Federal 311-Campbell

49-005-05448

 Sinclair PRB Timber 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 #1 Federal 311-Campbell
Beltz 13-11

25-075-21548-00-00

 Sam Gary PRB Bell Creek Powder River, MT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Beltz 13-11
Fed. Culver 7-9 (Unit 5709)

25-075-21522-00-00

 Sam Gary PRB Bell Creek Powder River, MT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Fed. Culver 7-9 (Unit 5709)
Swigart #24X-8

25-083-21151-00-00

 Shell Oil Williston Mondak West Richland, MT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Swigart #24X-8
PLU Nq. LjE.x-1010

P11656

 Pluspetrol S.A. Neuquen Loma Jarillosa Este - Puesto Silva Oeste Neuquen-AR SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on PLU Nq. LjE.x-1010
James “A” #8

30-015-26304

 Phillips Petroleum Co Permian Cabin Lake Eddy, NM-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on James “A” #8
Vincent A-1

49-005-20932

 Phillips Petroleum Co PRB Oedekoven Campbell, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Vincent A-1
Burke 24-3S

05-123-14527

 Prima Oil 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 Burke 24-3S
James “E” #4

30-015-26371

 Phillips Petroleum Co Permian Cabin Lake Eddy, NM-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on James “E” #4
6 Community

05-069-06137

 Pomeroy Production Denver Fort Collins Larimer, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 6 Community
Livingston Ridge #1

30-015-26398

 Phillips Petroleum Co Permian Cabin Lake Eddy, NM-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Livingston Ridge #1
Hoefs Ranch State 1-96 #1

42-389-33138

 Red Willow Production Permian Wolfbone Reeves, TX-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Hoefs Ranch State 1-96 #1
A.J. Krejci 184-1

42-371-38891

 Sabine Oil & Gas LLC Permian Wolfbone Pecos, TX-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on A.J. Krejci 184-1