Open AccessCenter for Volcanic and Tectonic Studies, Department of Geoscience annual report, October 1, 1989--September 30, 1990
Author(s) -
Eugene I. Smith
Publication year - 1990
Language(s) - English
Resource type - Reports
DOI - 10.2172/140772
Subject(s) - geology , butte , impact crater , volcano , basin and range province , tectonics , basalt , earth science , period (music) , volcanism , basin and range topography , archaeology , geochemistry , physical geography , geomorphology , paleontology , geography , physics , astronomy , acoustics
This report summarizes our activities during the period October 1, 1989 to September 30, 1990. Our goal was to develop an understanding of late-Miocene and Pliocene volcanism in the Great Basin by studying Pliocene volcanoes in the vicinity of the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. Field studies during this period concentrated on the Quaternary volcanoes in Crater Flat, Yucca Mountain, Fortification Hill, at Buckboard Mesa and Sleeping Butte, and in the Reveille Range. Also, a study was initiated on structurally disrupted basaltic rocks in the northern White Hills of Mohave County, Arizona. As well as progress reports of our work in Crater Flat, Fortification Hill and the Reveille Range, this paper also includes a summary of model that relates changing styles of Tertiary extension to changing magmatic compositions, and a summary of work being done in the White Hills, Arizona. In the Appendix, we include copies of published papers not previously incorporated in our monthly reports