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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
O’ Brien 2-19

05-073-06115

 Murfin Denver Hugo Lincoln, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on O’ Brien 2-19
3-29 Sidebottom UPRR

05-017-06465

 Murfin Las Animas Arch Archer Cheyenne, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 3-29 Sidebottom UPRR
Braukmann Farms 3

05-073-06102

 Mull Drilling Co Denver Clifford 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 3
May 154-1

42-499-32187

 Peak Energy Haynesville Wildcat Wood, TX-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on May 154-1
#1-18 UPRR-C

05-005-06158

 Pan AM Denver Peoria Arapahoe, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #1-18 UPRR-C
#33-1 UPRR

05-001-06229

 Pan AM Denver Wildcat Adams, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on #33-1 UPRR
#1 Emigh A

49-005-20982

 Phillips Petroleum Co PRB Hunter Ranch 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 Emigh A
Norby #1

25-083-21130-00-00

 Pennzoil Williston Sioux Pass Richland, MT-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Norby #1
UPRR #43

05-123-07217

 Pan AM Denver Spindle Weld, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on UPRR #43
UPRR #39 Pan Am 1

05-123-07220

 Pan AM Denver Wildcat Weld, CO-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on UPRR #39 Pan Am 1
Roberts “E”

49-033-20030

 Pan AM PRB Wildcat Sheridan, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Roberts “E”
Beaver Creek #100

49-013-20272

 Pan AM Wind River Beaver Creek Fremont, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on Beaver Creek #100
22 WC-1 Salt Creek

49-025-20398

 Pan AM PRB Salt Creek Natrona, WY-US SlabS Right arrow icon A white rectangle with a right arrow icon inside, representing a navigation symbol. View More Information on 22 WC-1 Salt Creek
1-B Warren Farms

05-123-07239

 Pan AM 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-B Warren Farms