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January 1, 1977

Leasable mineral and waterpower land classification map of the Shelby 1° x 2° quadrangle, Montana

No abstract available.

January 1, 1977

Magnetic and gravity anomalies in the northern Mississippi embayment and their spacial relation to seismicity

No abstract available.

January 1, 1977

Major active faults and seismicity in and near the Big Fork-Avon area, Missoula-Kalispell region, northwestern Montana

This is one of a series of environmental maps of a study area that overlies parts of Flathead, Lake, Missoula, and Powell Counties, northwestern Montana. The area extends from Big Fork, in Lake County, on the north to Avon, in Powell County, on the south, essentially as outline in figure 1. The environmental study was undertaken by the U.S. Geological Survey in response to a request from the Regio

January 1, 1977