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Scanned logs of down-hole lithologic and radiologic information from Arizona, Colorado, South Dakota, Utah, and Wyoming

Metadata Updated: November 26, 2025

This data release contains digitized well logs from a historic uranium exploration program conducted by the U.S. Atomic Energy Commission (AEC) between 1948 and 1956. The well logs document down-hole lithologic and radiologic information from drilling activities primarily in the Colorado Plateau (Colorado, Utah, Arizona, New Mexico), Wyoming, and South Dakota. These logs, originally archived in paper and Mylar formats, were digitized by the U.S. Geological Survey (USGS) and are provided in .pdf format, and associated header information describing file is also compiled. These scans of well logs, provide a significant, though incomplete, record of the drilling activities conducted during this period. The logs were transferred through various governmental bodies before being housed at the USGS in Denver. While well headers often do not contain sufficient information for georeferencing, related AEC and USGS reports often include maps with drill hole locations. This data release offers a valuable historical resource for research and public access, with the scanned logs available for download by state.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date September 12, 2025
Metadata Updated Date November 26, 2025

Metadata Source

Harvested from DOI USGS DCAT-US

Additional Metadata

Resource Type Dataset
Metadata Created Date September 12, 2025
Metadata Updated Date November 26, 2025
Publisher U.S. Geological Survey
Maintainer
Identifier http://datainventory.doi.gov/id/dataset/usgs-66fd6fbcd34edc655a85f03c
Data Last Modified 2025-01-17T00:00:00Z
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 1edca786-eceb-4950-b12d-cfa6c4d69368
Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
Harvest Source Title DOI USGS DCAT-US
Metadata Type geospatial
Source Datajson Identifier True
Source Hash 7912abbceed7f17dd7f435a42dd7b4f401b530d2f10d351efbd335b1ac7ca34a
Source Schema Version 1.1

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