Session: Exhumation of Continental Ultrahigh-Pressure Terranes

Thursday, 9 October 2008: 8:00 AM

George R. Brown Convention Center, 351CF

Presiding:

Jane A. Gilotti and William C. McClelland

8:00 AM

8:05 AM

Extension and Doming In (Ultra-)High-Pressure Terranes Driven by Syn-Convergent Exhumation of (U)HP Nappes
Rebecca A. Jamieson; Clare J. Warren; Christopher Beaumont, Dalhousie University

8:25 AM

344-2

Controls on Late-Orogenic Exhumation of Subducted UHP Continental Basement
Jared P. Butler; Christopher Beaumont; Rebecca A. Jamieson; Clare J. Warren

8:40 AM

344-3

The Timing of Exhumation and Basin Development In the North-East Greenland Caledonides
William C. McClelland, University of Iowa; Jane A. Gilotti, University of Iowa

8:55 AM

344-4

Exhumation of Ultrahigh-Pressure Rocks from the Overriding Plate of a Continent Collision - An Example from the Greenland Caledonides
Jane A. Gilotti, University of Iowa; William C. McClelland, University of Iowa

9:10 AM

344-5

Zircon Geochronology and Tectonostratigraphy of Liverpool Land, East Greenland: Evidence for a Caledonian Lower-Crustal Continental Suture
Scott M. Johnston, University of Arizona; Hannes K. Brueckner, Queens College, CUNY; Ebbe H. Hartz, Oslo University; George E. Gehrels, University of Arizona

9:25 AM

344-6

Structural Analysis in the Coast Range Ophiolite near Paskenta, California: Implications for Tectonic Uplift Processes
Andrew D. Dewhurst, The University of Texas at Austin; Mark Cloos, University of Texas at Austin

9:40 AM

Break

9:55 AM

344-7

Is Microplate Rotation Driving HP–UHP Exhumation In Eastern Papua New Guinea?
Laura E. Webb, Syracuse University; Suzanne L. Baldwin, Syracuse University; Timothy A. Little, Victoria University; Paul G. Fitzgerald, Syracuse University

10:15 AM

344-8

Correlation of Eocene-Oligocene Exhumation around the Caribbean: Venezuela, Dominican Republic, Honduras, and Guatemala
Virginia Sisson, University of Houston; Hans G. Ave Lallemant, Rice Univ; Sorena S. Sorensen, Smithsonian Institution

10:30 AM

344-9

The Karla Tectonic Unit (KTU): A Blueschist Shear Zone Juxtaposed with the Ultra-High Pressure Tso Morari Dome (TMD), Eastern Ladakh, India (Himalaya)
Rebecca Reverman, Univ Cincinnati; Kees DeJong, Univ Cincinnati

10:45 AM

344-10

The Insight into the Basement of Central Tibet: Timing, Exhumation, and Extent of the Qiangtang Metamorphic Belt and Duguer Shan Gneiss
Alex Pullen, University of Arizona; Paul Kapp, University of Arizona; George Gehrels, University of Arizona; Lin Ding, Chinese Academy of Sciences

11:00 AM

344-11

Tectonic Evolution of the North Qaidam UHP Metamorphic Terrane, Western China
Carrie A. Menold, Albion College; An Yin, University of California, Los Angeles; Craig E. Manning, University of California-Los Angeles; Xuanhua Chen, Chinese Academy of Geol Sciences; Xiaofeng Wang, Chinese Academy of Geol Sciences

11:15 AM

344-12

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
An Yin, University of California; Craig E. Manning, University of California

11:35 AM

Discussion

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344 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)

344 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)