| Online link | https://doi.org/10.3133/ofr01321 |
|---|---|
| Description | Geologic map digitized from a paper copy of plate 10 from USGS Bulletin 1015-D (Howland, 1955) |
| Originators | Howland, A. L., Moyer, Lorre A. |
| Publication | U.S. Geological Survey Open-File Report 01-321 |