Wyoming Geo-notes Number 64 Wyoming State Geological Survey Lance Cook, State Geologist OF WYOM TE IN TA G Laramie, Wyoming S G December, 1999 E Y O 1933 E L RV OGICAL SU WYOMING STATE GEOLOGICAL SURVEY Lance Cook, State Geologist GEOLOGICAL SURVEY BOARD Ex Officio Jim Geringer, Governor Philip L. Dubois, President, University of Wyoming Don J. Likwartz, Oil and Gas Supervisor Lance Cook, State Geologist Appointed Nancy M. Doelger, Casper Charles M. Love, Rock Springs Ronald A. Baugh, Casper Stephen L. Payne, Casper John E. Trummel, Gillette STAFF Computer Services Unit Publications Section Susan McClendon - Manager Richard W. Jones - Editor Janet Van Nuys - Editorial Assistant Geologic Sections Kathy Hastreiter - Sales Manager Fred H. Porter, III - Cartographer James C. Case, Staff Geologist - Geologic Hazards Phyllis A. Ranz - Cartographer Rodney H. De Bruin, Staff Geologist - Oil and Gas Ray E. Harris, Staff Geologist - Industrial Laboratory Unit Minerals and Uranium Robert W. Gregory, Laboratory Technician W. Dan Hausel, Senior Economic Geologist - Metals and Precious Stones Supportive Services Unit Robert M. Lyman, Staff Geologist - Coal Susanne G. Bruhnke - Office Manager Alan J. Ver Ploeg, Senior Staff Geologist - Geologic Peggy Hopkins - Administrative Assistant Mapping PHONE: (307) 766-2286 Email:
[email protected] FAX: (307) 766-2605 WEB Page: http://www.wsgsweb.uwyo.edu WYOMING GEO-NOTES: This quarterly digest on the State’s geology and mineral resources and activities of the Geological Survey is available by subscription (four issues for $15.00) or as single copies at $5.00 each. Two-year subscriptions are accepted. People with disabilities who require an alternative form of communication in order to use this publication should contact the Editor, Wyoming State Geological Survey at (307) 766-2286.