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Rocky Mountain (56th Annual) and Cordilleran (100th Annual) Joint Meeting (May 3–5, 2004)

Session No. 14
Monday, 3 May 2004: 1:00 PM-5:00 PM

S2. Large-volume Ryolites of the Western USA: A Tribute to Bill Bonnichsen

 

Michael McCurry and Eric Christiansen, Conveners
Paper #
Start Time
 
1:00 PM
Introductory Remarks
1
1:10 PM
THE SNAKE RIVER PLAIN 11.7-10.0 MA IGNIMBRITE FLARE-UP
BONNICHSEN, Bill, 927 East 7th St, Moscow, ID 83843, billb@uidaho.edu, billb@uidaho.edu
2
1:40 PM
THE COUGAR POINT TUFF: COMPOSITIONAL GAPS AND GRADIENTS IN HIGH-TEMPERATURE, LARGE-VOLUME SILICIC MAGMAS OF THE MIOCENE YELLOWSTONE HOTSPOT, AND IMPLICATIONS FOR MAGMA RESERVOIR LONGEVITY
CATHEY, Henrietta E. and NASH, Barbara P., Department of Geology and Geophysics, Univ of Utah, Salt Lake City, UT 84112, hecathey@mines.utah.edu, hecathey@mines.utah.edu
3
2:00 PM
LARGE VOLUME LOW d18O RHYOLITES IN THE BRUNEAU-JARBIDGE VOLCANIC CENTER: EVIDENCE FOR LARGE SCALE MELTING OF HYDROTHERMALLY ALTERED CRUST?
BOROUGHS, Scott1, WOLFF, John1, BONNICHSEN, Bill2, GODCHAUX, Martha2 and LARSON, Peter1, (1)Geology Department, Washington State Univ, Pullman, WA 99163, (2)Idaho Geologic Survey, 927 East 7th St, Moscow, ID 83843, entoptics@turbonet.com, entoptics@turbonet.com
4
2:20 PM
DUCTILE DEFORMATION DURING THE EMPLACEMENT OF AN INTENSELY WELDED RHEOMORPHIC IGNIMBRITE, GREY'S LANDING, SOUTHERN IDAHO, USA
ANDREWS, Graham D.M.1, BRANNEY, Micheal J.2, BONNICHSEN, Bill3 and TEMPERLEY, Steve2, (1)Geology, Univ of Leicester, Dept. of Geology, University of Leicester, Leicester, LE1 7RH, (2)Geology, Univ of Leicester, Dept. of Geology, University of Leicester, Leicester, LE1 7RH, United Kingdom, (3)927 East 7th St, Moscow, ID 83843, gdma1@le.ac.uk, gdma1@le.ac.uk
 
2:40 PM
Break
5
3:00 PM
EVOLUTION OF SNAKE RIVER PLAIN (SRP) SILICIC MAGMAS – THE MAGIC RESERVOIR ERUPTIVE CENTER
LEEMAN, William P., Department of Earth Science, Rice Univ, MS-126, Houston, TX 77251-1892, leeman@rice.edu, leeman@rice.edu
6
3:20 PM
THE RATTLESNAKE TUFF, OREGON: AN EXCEPTIONAL RECORD OF A VOLUMINOUS HIGH-SILICA RHYOLITE SYSTEM
STRECK, Martin J., Department of Geology, Portland State Univ, Portland, OR 97207, streckm@pdx.edu, streckm@pdx.edu
7
3:40 PM
CAN FRACTIONATION OF AN OLIVINE THOLEIITE GIVE RISE TO POTASSIC RHYOLITES?
WHITAKER, Matthew L., Department of Geosciences, State Univ of New York at Stony Brook, Stony Brook, NY 11794-2100, NEKVASIL, Hanna, Department of Geosciences, State Univ of New York at Stony Brook, Department of Geosciences, Stony Brook University, Stony Brook, NY 11794-2100 and LINDSLEY, Donald H., Geosciences, State Univ of New York, Stony Brook, NY 11794-2100, matthew.whitaker@sunysb.edu, matthew.whitaker@sunysb.edu
8
4:00 PM
CONTRASTING PROCESSES IN SILICIC MAGMA CHAMBERS: EVIDENCE FROM VERY LARGE VOLUME IGNIMBRITES
CHRISTIANSEN, Eric H., Department of Geology, Brigham Young University, Provo, UT 84602, eric_christiansen@byu.edu, eric_christiansen@byu.edu
 
4:20 PM
Discussion
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