The Bisbee Group of the Tombstone Hills, Southeastern Arizona


Book Description

Unraveling the complex geology of major host rocks makes possible a better understanding of ore deposits in the Tombstone Basin area.










First International Symposium on Volcanic Ash and Aviation Safety


Book Description

Explanation of eruptions, lava flows and glacier melting on Redoubt Volcano on the west shore of Cook Inlet, southern Alaska, near Anchorage in 1989 and 1990.




The Mojave-Sonora Megashear Hypothesis


Book Description
















Summary of Investigations


Book Description

A summary of recent scientific and economic results, accompanied by a list of publications released in fiscal 1963, a list of geologic and hydrologic investigations in progress, and a report on the status of topographic mapping.