### Preliminary geologic mapping of Cretaceous and Tertiary formations in the eastern part of the Little Snake River coal field, Carbon County, Wyoming

By: Jon E. HaackeC. S. Venable BarclayRobert D. Hettinger

                            https://doi.org/10.3133/ofr20161170

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-                                                                                                                             Document:                                                                                                                                                                                                                                                  **Report**                                                                                                     (7.73 MB pdf)                                                                                                                                     
- Additional Report Piece:  **Field Notes**                            (444 MB zip)                        
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- Spatial Data:  **Spatial Data**                            (2.45 GB zip)                        
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#### Abstract

First posted September 30, 2016

**For additional information, contact:**
Center Director, USGS Central Energy Resources Science CenterBox 25046, Mail Stop 939Denver, CO 80225

http://energy.usgs.gov/

In the 1970s and 1980s, C.S. Venable Barclay conducted geologic mapping of areas primarily underlain by Cretaceous coals in the eastern part of the Little Snake River coal field (LSR) in Carbon County, southwest Wyoming. With some exceptions, most of the mapping data were never published. Subsequently, after his retirement from the U.S. Geological Survey (USGS), his field maps and field notebooks were archived in the USGS Field Records. Due to a pending USGS coal assessment of the Little Snake River coal field area and planned geological mapping to be conducted by the Wyoming State Geological Survey, Barclay’s mapping data needed to be published to support these efforts. Subsequently, geologic maps were scanned and georeferenced into a geographic information system, and project and field notes were scanned into Portable Document Format (PDF) files. Data for seventeen 71⁄2-minute quadrangles are presented in this report. This publication is solely intended to compile the mapping data as it was last worked on by Barclay and provides no interpretation or modification of his work.

#### Suggested Citation

Haacke, J.E., Barclay, C.S.V., and Hettinger, R.D., 2016, Preliminary geologic mapping of Cretaceous and Tertiary formations in the eastern part of the Little Snake River coal field, Carbon County, Wyoming: U.S. Geological Survey Open-File Report 2016–1170, 9 p., http://dx.doi.org/10.3133/ofr20161170.

ISSN: 2331-1258 (online)

#### Study Area

#### Table of Contents

- Abstract
- Overview of Barclay Studies
- The Little Snake River Coal Field Map Data
- Summary
- Acknowledgments
- References Cited

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