Izett, Glen A., John D. Obradovich, and Harald H. Mehnert

The Bishop Ash Bed (Middle Pleistocene) and Some Older (Pliocene and Pleistocene) Chemically and Mineralogically Similar Ash Beds in California, Nevada, and Utah;

Washington: United States Government Printing Office, 1988. softcover, 11" x 8.5", two folded sheets inside rear pocket, 37 pages, illustrated. near fine. Item #5569701

from the introduction, "The chief purpose of this report is to tabulate previously unpublished mineralogical and chemical data for a comagmatic group of over 40 middle Pleistocene volcanic ash beds that occur at widely scattered localitites in the Western United States."

Price: $25.00