Major 10.2-Ma Rhylitic Volcanism in the Eastern Snake River Plain, Idaho -- Isotopic Age and Stratigraphic Setting of the Arbon Valley Tuff member of the Starlight Formation; U.S. Geological Survey Bulletin 2091
Washington: United States Government Printing Office, 1994. softcover, 11" x 8.5", 18 pages, illustrated, owner name stamped cover, bottom corner creased, scuff mark cover. from the introduction, "Evidence is accumulating that the Snake River Plain is underlain and partly surrounded by a sequence of rhyolitic ash flow tuffs that represent..... More