Maps of Helena and East Helena quadrangles, Montana, showing areal distribution of surficial deposits and bedrock and location of geological faults
Open-File Report
77-129
By: Robert George Schmidt
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Abstract
Suggested Citation
Schmidt, R.G., 1977, Maps of Helena and East Helena quadrangles, Montana, showing areal distribution of surficial deposits and bedrock and location of geological faults: U.S. Geological Survey Open-File Report 77-129, 2 maps.; 5 p., https://doi.org/10.3133/ofr77129.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Maps of Helena and East Helena quadrangles, Montana, showing areal distribution of surficial deposits and bedrock and location of geological faults |
| Series title | Open-File Report |
| Series number | 77-129 |
| DOI | 10.3133/ofr77129 |
| Year Published | 1977 |
| Language | ENGLISH |
| Description | 2 maps.; 5 p. |