2008 Joint Meeting of The Geological Society of America, Soil Science Society of America, American Society of Agronomy, Crop Science Society of America, Gulf Coast Association of Geological Societies with the Gulf Coast Section of SEPM

Session No. 344
Thursday, 9 October 2008: 8:00 AM-12:00 PM

T84. Exhumation of Continental Ultrahigh-Pressure Terranes

GSA Structural Geology and Tectonics Division; UNESCO International Lithosphere Program Task Force IV: Ultra-Deep Continental Crust Subduction; Gulf Coast Association of Geological Societies

 

Jane A. Gilotti and William C. McClelland, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
Extension and Doming In (Ultra-)High-Pressure Terranes Driven by Syn-Convergent Exhumation of (U)HP Nappes
JAMIESON, Rebecca A., Department of Earth Sciences, Dalhousie University, Halifax, NS B3H 4J1, Canada, WARREN, Clare J., Department of Earth and Environmental Sciences, The Open University, Milton Keynes, MK7 6AA, England and BEAUMONT, Christopher, Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1, Canada, beckyj@dal.ca, beckyj@dal.ca
2
8:25 AM
Controls on Late-Orogenic Exhumation of Subducted UHP Continental Basement
BUTLER, Jared P., Department of Earth Sciences, Dalhousie University, Halifax, NS B3H 4R2, Canada, BEAUMONT, Christopher, Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1, Canada, JAMIESON, Rebecca A., Department of Earth Sciences, Dalhousie University, Halifax, NS B3H 4J1, Canada and WARREN, Clare J., Environment, Earth and Ecosystems, The Open University, Milton Keynes, MK7 6AA, England, butlerjp@dal.ca, butlerjp@dal.ca
3
8:40 AM
The Timing of Exhumation and Basin Development In the North-East Greenland Caledonides
MCCLELLAND, William C. and GILOTTI, Jane A., Department of Geoscience, University of Iowa, Iowa City, IA 52242, wmcclell@uidaho.edu, wmcclell@uidaho.edu
4
8:55 AM
Exhumation of Ultrahigh-Pressure Rocks from the Overriding Plate of a Continent Collision - An Example from the Greenland Caledonides
GILOTTI, Jane A. and MCCLELLAND, William C., Department of Geoscience, University of Iowa, Iowa City, IA 52242, jane-gilotti@uiowa.edu, jane-gilotti@uiowa.edu
5
9:10 AM
Zircon Geochronology and Tectonostratigraphy of Liverpool Land, East Greenland: Evidence for a Caledonian Lower-Crustal Continental Suture
JOHNSTON, Scott M., Department of Geosciences, University of Arizona, Gould-Simpson Bldg #77, 1040 E 4th St, Tucson, AZ 85721, BRUECKNER, Hannes K., School of Earth and Environmental Sciences, Queens College, CUNY, 65-30 Kissena Boulevard, Flushing, NY 11367-1597, HARTZ, Ebbe H., Physics of Geological Processes, Oslo University, PO Box 1048 Blindern, Oslo, 0316, Norway and GEHRELS, G.E., Department of Geosciences, University of Arizona, Gould-Simpson Building #77, 1040 E 4th St, Tucson, AZ 85721, scojoh@email.arizona.edu, scojoh@email.arizona.edu
6
9:25 AM
Structural Analysis in the Coast Range Ophiolite near Paskenta, California: Implications for Tectonic Uplift Processes
DEWHURST, Andrew D., Department of Geological Sciences, The University of Texas at Austin, 1 University Station C1100, Austin, TX 78712 and CLOOS, Mark, Department of Geological Sciences, University of Texas at Austin, Jackson School of Geosciences 1 University Station C9000, Austin, TX 78712, dewhursta@mac.com, dewhursta@mac.com
 
9:40 AM
Break
7
9:55 AM
Is Microplate Rotation Driving HP–UHP Exhumation In Eastern Papua New Guinea?
WEBB, Laura E.1, BALDWIN, Suzanne L.1, LITTLE, Timothy A.2 and FITZGERALD, Paul G.1, (1)Earth Sciences, Syracuse University, Syracuse, NY 13244-1070, (2)School of Earth Sciences, Victoria University, Wellington, 6000, New Zealand, lewebb@syr.edu, lewebb@syr.edu
8
10:15 AM
Correlation of Eocene-Oligocene Exhumation around the Caribbean: Venezuela, Dominican Republic, Honduras, and Guatemala
SISSON, Virginia, Department of Earth and Atmospheric Sciences, University of Houston, 4800 Calhoun, Houston, TX 77204, AVE LALLEMANT, Hans G., Dept. of Earth Science, Rice Univ, MS-126, Houston, TX 77005-1892 and SORENSEN, Sorena S., Dept of Mineral Sciences, Smithsonian Institution, National Museum of Natural History, PO Box 37012, MRC 119, Washington, DC 20013-7012, j_sisson@netzero.com, j_sisson@netzero.com
9
10:30 AM
The Karla Tectonic Unit (KTU): A Blueschist Shear Zone Juxtaposed with the Ultra-High Pressure Tso Morari Dome (TMD), Eastern Ladakh, India (Himalaya)
REVERMAN, Rebecca, Geology, Univ Cincinnati, Geology, Cincinnati, OH 45221 and DEJONG, Kees, Univ Cincinnati, Geology, Cincinnati, OH 45221, kees.dejong@uc.edu, kees.dejong@uc.edu
10
10:45 AM
The Insight into the Basement of Central Tibet: Timing, Exhumation, and Extent of the Qiangtang Metamorphic Belt and Duguer Shan Gneiss
PULLEN, Alex, Department of Geosciences, University of Arizona, Gould-Simpson Building #77, Tucson, AZ 85721, KAPP, Paul, Geosciences, University of Arizona, 1040 E. 4th Street, Tucson, AZ 85721, GEHRELS, George E., Department of Geosciences, University of Arizona, Tucson, AZ 85721 and DING, Lin, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100029, apullen@email.arizona.edu, apullen@email.arizona.edu
11
11:00 AM
Tectonic Evolution of the North Qaidam UHP Metamorphic Terrane, Western China
MENOLD, Carrie A.1, YIN, An2, MANNING, Craig E.3, CHEN, Xuanhua4 and WANG, Xiaofeng4, (1)Department of Geology, Albion College, 611 E Porter St, Albion, CA 49224, (2)Department of Earth & Space Sciences, University of California, Los Angeles, 595 Charles Young Drive East, 3806 Geology Building, Los Angeles, CA 90095-1567, (3)Department of Earth and Space Sciences, University of California-Los Angeles, Los Angeles, CA 90095-1567, (4)Institute of Geomechanics, Chinese Academy of Geol Sciences, Beijing, 10081, China, cmenold@albion.edu, cmenold@albion.edu
12
11:15 AM
A Thermomechanical Model of Diapriric Flow during UHP Metamorphism and Its Applications in Using P-T-T Data to Infer Upper-Mantle Rheology and Thermal Structures
YIN, An and MANNING, Craig E., Department of Earth and Space Sciences, University of California, Los Angeles, CA 90095-1567, yin@ess.ucla.edu, yin@ess.ucla.edu
 
11:35 AM
Discussion
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