Session No. 4 Tuesday, May 7, 2002

8:00 AM-10:00 AM, Sharwan Smith Center: Cedar Breaks
T6. Volcanology and Mineral Resources of the Great Basin and the Colorado Plateau Transition Zone
John J. Anderson and Charles G. Cunningham, Presiding
Start Time
8:00 AM A PETROLOGIC PARADOX IN CENTRAL DEATH VALLEY, CALIFORNIA: HAEFNER, Richard, POB 94, Shoshone, CA 92384, richardhaefner@netzero.com and TROXEL, Bennie W., 2961 Redwood Drive, Napa, CA 94558
8:20 AM VOLCANIC ROCKS AND ORE DEPOSITS OF THE MARYSVALE VOLCANIC FIELD, WEST-CENTRAL UTAH: CUNNINGHAM, C. G., U.S. Geol. Survey, 954 Natl. Ctr, Reston, VA 20192, cunningham@usgs.gov, STEVEN, T. A., Box 27035, Denver, CO 80227, and ROWLEY, P. D., Geologic Mapping, Inc, Box 651, New Harmony, UT 84757
8:40 AM CRYSTALLOCHEMICAL VARIATION AND GENESIS OF MORDENITE, MARYSVALE, UTAH: BARTLETT, Emily1, GRIFFEN, Dana T.2, NELSON, Stephen T.3, DORAIS, Michael J.2, and KARLSSON, Haraldur R.4, (1) Department of Geology, Brigham Young Univ, 430 W. 1100 N, Cedar City, UT 84720, eb254@email.byu.edu, (2) Department of Geology, Brigham Young Univ, Provo, UT 84602, (3) Brigham Young Univ, PO Box 24606, Provo, UT 84602-4606, (4) Department of Geosciences, Texas Tech Univ, Lubbock, TX 79409-1053
9:00 AM Break
9:20 AM PETROLOGY AND EMPLACEMENT OF THE COTTONWOOD WASH TUFF: ROSS, Keryn Tobler, CHRISTIANSEN, Eric H., BEST, Myron G., DORAIS, Michael J., and TINGEY, Dave G., Department of Geology, Brigham Young Univ, S389 ESC, Provo, UT 84602, keryn@byu.edu
9:40 AM THE OLIGOCENE ISOM FORMATION, UTAH-NEVADA: A REGIONAL ASH-FLOW TUFF SHEET CONTAINING FLUIDAL FEATURES OF A LAVA FLOW: ANDERSON, John J., P.O. Box 641, New Harmony, UT 84757, jjau@accesswest.com and ROWLEY, Peter D., Geologic Mapping, Inc, P.O. Box 651, New Harmony, UT 84757

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