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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
Sharks Hole

N/A Barbados 052-03

 Humphrey & Canter Saint Philip Parish, BB Butts, slabsS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Sharks Hole
Fletcher Gulch Federal 4-24-2 (pilot hole)

05-103-11888

 Laramie Piceance Fletcher Gulch Rio Blanco, CO-US SlabS Photos Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Fletcher Gulch Federal 4-24-2 (pilot hole)
#2 Kallsen

05-031-06390

 Koch Expl. Denver Third Creek Adams, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #2 Kallsen
Disposal #1 (Sequoyah 1)

35-135-20024-00-00

 Kerr-McGee Arkoma Sequoyah, OK-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Disposal #1 (Sequoyah 1)
14-1 Fed Land Bank

05-081-06179

 Kenmerer Coal CO. GGR Big Hole Moffat, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 14-1 Fed Land Bank
#1 Cowen

05-087-07149

 Jake C. Hamon Denver Wildcat Morgan, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #1 Cowen
Fed. Sullivan # 25-1

49-005-21023

 J.M Huber 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 Fed. Sullivan # 25-1
Huntsman Storage 26

26-033-22173-00-00

 KN Energy Corp Denver Huntsman Storage Cheyenne, NE-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Huntsman Storage 26
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
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
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)
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
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
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