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Title: Regional geology of eastern Idaho and western Wyoming

Book ·
OSTI ID:5343734

The first section, Regional Synthesis, consists of a single 53-page chapter entitled The track of the Yellowstone hot spot: Volcanism faulting, and uplift.'' The authors' approach is to interpret major features or regional geology as resulting in large part from the last 16 Ma of southwesterly migration by the North American plate over a stationary thermal plume in the mantle. Evidence that may relate to the Yellowstone hot spot model is presented under headings dealing with volcanic track of the hot spot, neotectonic faulting associated with the hot spot, and regional topographic anomalies which may have resulted from hot spot-induced uplift or subsidence. The second section of the book deals with the Idaho-Wyoming thrust belt. Each chapter is a separate article by different authors, so coverage is of selected topics in the Idaho-Wyoming thrust belt rather than a comprehensive overview. Extensional tectonics is the topic of the book's third section. Field investigations of two major structures, the Grand Valley fault and the Teton normal fault, are presented in chapters eight and nine, respectively. Chapter ten focuses on surficial gravity slide sheets that are well-exposed in the area, with particular emphasis on their structural features and mechanisms of emplacement. The final 90 pages of the book make up a four-chapter section that deals with the eastern Snake River plain (ESRP). Topical coverage is quite varied, ranging from details of Quaternary stratigraphy at one site to an overview of the eastern Snake River plain basaltic volcanism and an investigation of ignimbrites of the Heise volcanic field.

OSTI ID:
5343734
Country of Publication:
United States
Language:
English