Geologic studies in Alaska by the U.S. Geological Survey, 1996

Abstract

Mines FaxBack: Return fax service\. Use the touch-tone handset attached to your fax machine's telephone jack. (ISDN [digital] telephones cannot be used with fax machines.) 2. Dial (703) 648-4999. 3. Listen to the menu options and punch in the number of your selection, using the touch-tone telephone. 4. After completing your selection, press the start button on your fax machine. CD-ROMA disc containing chapters of the Minerals Yearbook , the Mineral Commodity Summaries , a statistical compendium , and other publications is updated three times a year and sold by the Superintendent of Documents, Government Printing Office (address above). World Wide WebMinerals information is available electronically at http://minerals.er.usgs.gov/minerals/ Subscription to the catalog "New Publications of the U.S. Geological Survey"Those wishing to be placed on a free subscnption list for the catalog "New Publications of the U.S. Geological Survey" should write to-U.S. Geological Survey 903 National Center Reston, VA 20192 Geologic Studies in Alaska by the U.S. Geological Survey, 1996John E. Gray and J.R. Riehle, Editors U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1595UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1998 DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Thomas J. Casadevall, Acting DirectorAny use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.Manuscript approved for publication, November 25,1997 Library of Congress catalog-card No. 92-32287For sale by U.S. Geological Survey, Map Distribution Box 25286, MS 306, Federal Center Denver, CO 80225COVER PHOTO: Kaguyak Crater is the northernmost collapse caldera in the Aleutian volcanic arc and the only Holocene caldera on the Alaska Peninsula whose age has not been determined directly. Recent tephra studies (see article by Riehle and others) establish an age by correlation of about 3,600 yr B.P. The age is significant because it means that, in addition to major eruptions at other volcanoes, four of the six Holocene calderas on the Alaska Peninsula formed between 3,400 and 4,000 yr B.P. Mortensen, James K. Department of Earth and Ocean SciencesUniversity of British Columbia Vancouver, British Columbia, Canada Newberry, RainerJ.Solie, Diana N. Department of Geology University of Alaska Fairbanks, Alaska 99775Reed, Katherine M. Washington Division of Geology and Earth ResourcesOlympia, Washington 98504-7007Tore, Jaime Department of Geological and Environmental Sciences Stanford University Stanford, California 94305 Geologic Studies in Alaska by the U.S. Geological Survey, 1996By John E. Gray and James R. Riehle INTRODUCTIONThis collection of 12 papers continues the annual series 1 of U.S. Geological Survey (USGS) reports on geologic investigations in Alaska. The annual volume presents results from new or ongoing studies in Alaska that are of interest to scientists in academia, industry, land and resource managers, and the general public. The Geological...