Session: Granites at Convergent Margins: Physical and Chemical Constraints on Processes and Petrogenesis (2003 Seattle Annual Meeting (November 2

Paper #

Start Time

8:00 AM

Introductory Remarks

1

8:15 AM

DEHYDRATION-MELTING REACTIONS AND THE FORMATION OF HYDROUS PHASES BY INCONGRUENT REACTION: AN ALTERNATIVE WAY TO VIEW THE CRYSTALLIZATION OF HYDROUS MAGMAS

BEARD, James S.¹, RAGLAND, Paul C.¹ and RUSHMER, Tracy², (1)Virginia Museum of Nat History, 1001 Douglas Ave, Martinsville, VA 24112, (2)Dept. of Geology, Univ of Vermont, Burlington, VT 05405, jbeard2@sitestar.net, jbeard2@sitestar.net

2

8:30 AM

MAGMATIC PROCESSES IN THE CENTRAL SIERRA NEVADA BATHOLITH: A CRYPTIC PRE-JURASSIC BOUNDARY IN LONG VALLEY, CA

LACKEY, Jade Star¹, VALLEY, John W.¹, STOCKLI, Daniel F.² and HOUSE, Martha A.³, (1)Department of Geology and Geophysics, Univ of Wisconsin, Madison, WI 53706, (2)Geology Department, Univ of Kansas, Lawrence, KS 66045, (3)Division of Geological and Planetary Sciences, California Institute Technology, Pasadena, CA 91125, jadestar@geology.wisc.edu, jadestar@geology.wisc.edu

3

8:45 AM

ASYMMETRIC ZONING OF A MIDDLE CRUSTAL PLUTON IN THE NORWEGIAN CALEDONIDES: SELECTIVE ASSIMILATION OF HOST ROCKS

BARNES, Calvin G., Department of Geosciences, Texas Tech Univ, Box 41053, Lubbock, TX 79409-1053, DUMOND, Gregory, Department of Geosciences, Univ of Massachusetts, Amherst, MA 01003, YOSHINOBU, Aaron S., Department of Geosciences, Texas Tech Univ, Lubbock, TX 79409-1053 and PRESTVIK, Tore, Dept. of Geology and Mineral Resources Engineering, NTNU, Trondheim, N-7491, Norway, cal.barnes@ttu.edu, cal.barnes@ttu.edu

4

9:00 AM

MAGMATIC EPISODICITY IN THE EASTERN COAST PLUTONIC COMPLEX, BELLA COOLA, BRITISH COLUMBIA

GORDEE, Sarah, Earth and Ocean Sciences, Univ of British Columbia, 6229 Stores Road, Vancouver, BC V6T 1Z4, Canada, MAHONEY, J. Brian, Dept. of Geology, Univ of Wisconsin, Eau Claire, WI 54792-4004, DIAKOW, Larry, British Columbia Geological Survey, Victoria, BC, Canada, FRIEDMAN, Richard, Department of Earth and Ocean Sciences, Univ of British Columbia, 6339 Stores Rd, Vancouver, BC V6T 1Z4, Canada, HAGGART, James W., Geol Survey Canada, 101-605 Robson St, Vancouver, BC V6B 5J3, Canada, WOODSWORTH, G.J., Geol Survey of Canada, 101-605 Robson St, Vancouver, BC V6B 5J3 and VILLENEUVE, Mike, Geological Survey of Canada, Continental Geoscience Div, 601 Booth Street, Ottawa, ON K1A 0E8, Canada, sgordee@eos.ubc.ca, sgordee@eos.ubc.ca

5

9:15 AM

TIMESCALES OF GRANITIC MELT PRODUCTION, SEGREGATION AND CRYSTALLIZATION IN THE HIMALAYAN OROGEN

VISKUPIC, Karen, HODGES, Kip V. and BOWRING, Samuel A., Earth Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, kmviskup@mit.edu, kmviskup@mit.edu

9:30 AM

Break

6

9:45 AM

DIFFERENTIAL COOLING OF A PLUTON EMPLACED INTO CRUST WITH A LATERAL THERMAL GRADIENT: INSIGHTS FROM ALKALI-FELDSPAR CRYSTAL SIZE DISTRIBUTIONS ACROSS THE CENTRAL WHITNEY PLUTON, SIERRA NEVADA, CALIFORNIA

HIRT, William H., Division of Natural and Applied Sciences, College of the Siskiyous, 800 College Avenue, Weed, CA 96094, hirt@siskiyous.edu, hirt@siskiyous.edu

7

10:00 AM

CRYSTAL SIZE DISTRIBUTIONS (CSD) OF FELDSPARS IN GRANITOIDS FROM TURKEY AND CALIFORNIA

HIGGINS, Michael D., Sciences Appliques, Universite du Quebec a Chicoutimi, 555 blvd de l'universite, Chicoutimi, QC G7H2B1, BOZTUG, Durmus, Dept. of Geological Engineering, Cumhuriyet University, Sivas, 58140, Turkey and SAHIN, Sabah Y., Dept. Geophysical Engineering, Istanbul Univ, Istanbul, 34850, mhiggins@uqac.ca, mhiggins@uqac.ca

8

10:15 AM

COMPACTION IN SILICIC MUSHES: THE MISSING LINK BETWEEN CRYSTAL-POOR RHYOLITES AND SUBVOLCANIC PLUTONS?

BACHMANN, Olivier, Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Clausiusstrasse 25, Zürich, 8092, Switzerland and BERGANTZ, George W., Earth Space Sciences, Univ of Washington, Box 351310, Seattle, WA 98195, olivier.bachmann@erdw.ethz.ch, olivier.bachmann@erdw.ethz.ch

9

10:30 AM

EVIDENCE FOR FAST MAGMA CHAMBER CONSTRUCTION: THE DEFORMED CARAPACE OF THE SAN JOSE TONALITE PLUTON, MEXICO

JOHNSON, Scott E.¹, VERNON, Ron H.², UPTON, Phaedra¹ and MELIS, Erwin¹, (1)Earth Sciences, Univ of Maine, 5790 Bryand Center, Orono, ME 04469-5790, (2)Earth and Planetary Sciences, Macquarie Univ, Sydney, NSW, 2109, johnsons@maine.edu, johnsons@maine.edu

10

10:45 AM

THERMAL HISTORIES OF EPISODICALLY CONSTRUCTED, LARGE VOLUME MAGMA CHAMBERS: IMPLICATIONS FOR PROCESSES ALONG INTERNAL CONTACTS

PATERSON, Scott R., Dept. of Earth Sciences, Univ of Southern California, 3651 Trousdale Ave, Los Angeles, CA 90089-0740, OKAYA, David, Southern California Eartquake Center, Univ of Southern California, Los Angeles, CA and ZAK, Jiri, Department of Geology, Faculty of Science, Charles Univ, Czech Republic, Prague, paterson@usc.edu, paterson@usc.edu

11

11:00 AM

MAGMA CHAMBER CONSTRUCTION AND EVOLUTION: CONSTRAINTS FROM THE JACKASS LAKES PLUTON, CENTRAL SIERRA NEVADA

PIGNOTTA, Geoffrey, Univ Southern California, 3651 University Ave, Los Angeles, CA 90089-0740 and PATERSON, Scott, Dept. of Earth Sciences, Univ of Southern California, 3651 Trousdale Ave, Los Angeles, CA 90089-0740, pignotta@usc.edu, pignotta@usc.edu

12

11:15 AM

STOPING HAPPENS!

YOSHINOBU, Aaron S.¹, MARKO, Wayne T.¹, DUMOND, Greg², WOLAK, Jeannette³, BARNES, Cal¹ and NORDGULEN, Oystein⁴, (1)Dept. of Geosciences, Texas Tech Univ, Lubbock, TX 79409-1053, (2)Dept. of Geosciences, UMASS, Amherst, MA 01003, (3)Dept. of Geosciences, Texas Tech Univ, Lubbock, TX 79409, (4)Norwegian Geol Survey, Trondheim, N-7491, Norway, aaron.yoshinobu@ttu.edu, aaron.yoshinobu@ttu.edu

2003 Seattle Annual Meeting (November 2–5, 2003)

T139. Granites at Convergent Margins: Physical and Chemical Constraints on Processes and Petrogenesis