GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 49
Sunday, 22 October 2017: 1:30 PM-5:30 PM
Skagit 4 (The Conference Center)

T163. Petrochronology: Advances and Applications to Petrogenesis and Tectonics II

GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; GSA Structural Geology and Tectonics Division; Mineralogical Society of America; Geochemical Society
Matthew J. Kohn, Pierre Lanari and Martin Engi, Advocates
 
1:30 PM
Introductory Remarks
1:35 PM
OVERSTEPPING OF GARNET NUCLEATION AND IMPLICATIONS FOR TECTONIC INTERPRETATION OF GARNET AGES (Invited Presentation)
SPEAR, Frank S., WOLFE, Oliver M. and CASTRO, Adrian E., Earth and Environmental Sciences, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY 12180, spearf@rpi.edu
1:55 PM
EXCESS GARNET GROWTH IN METAMORPHIC ROCKS DRIVEN BY REACTION AFFINITY ASSOCIATED WITH OVERSTEPPED REACTIONS
HOISCH, Thomas D.1, CRADDOCK, Suzanne D.1 and KELLY, Eric D.2, (1)School of Earth Sciences and Environmental Sustainability, Northern Arizona University, 625 S. Knoles Dr., Flagstaff, AZ 86011, (2)Geological Sciences, University of Texas at Austin, 2275 Speedway Stop C9000, Austin, TX 78712, thomas.hoisch@nau.edu
2:10 PM
IMPACTS OF FLUIDS ON THE MINERALOGICAL RECORD IN SUBDUCTION ZONES; IMPLICATIONS FOR PRESSURE-TEMPERATURE-TIME-DEFORMATION RECONSTRUCTIONS
LANARI, Pierre1, AIRAGHI, Laura2 and HERMANN, Jörg1, (1)Department of Geological Sciences, University of Bern, Baltzerstrasse 1, Bern, CH3012, Switzerland, (2)ISTerre, Univ. Grenoble Alpes, Grenoble, 38000, France, pierre.lanari@geo.unibe.ch
2:25 PM
P-T CONDITIONS OF SYMPLECTITE FORMATION IN THE ECLOGITES FROM THE WESTERN GNEISS REGION (NORWAY)
MARTIN, Celine, Department of Geography and Earth Sciences, University of North Carolina Charlotte, 9201 University City Blvd, Charlotte, NC 28223; Department of Earth and Planetary Science, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024-519 and BIGGE, Nils, Ruhr Universitat Bochum, Bochum, 44780, Germany, cmart175@uncc.edu
2:40 PM
ORIGIN OF EXOTIC BLOCKS IN THE CATALINA SCHIST: IMPLICATIONS FOR MOVEMENT ALONG THE SUBDUCTION INTERFACE
HARVEY, Kayleigh M., Department of Geology, University of Maryland College Park, 8000 Regents Dr, College Park, MD 20742, PENNISTON-DORLAND, Sarah C., Department of Geology, University of Maryland College Park, 8000 Regents Drive, College Park, MD 20742 and KOHN, Matthew J., Geosciences, Boise State University, 1910 University Drive, Boise, ID 83725, kharv@umd.edu
2:55 PM
SUBDUCTION OF CONTINENTAL BASEMENT: SCALES OF BRITTLE DEFORMATION, (RE-)HYDRATION, AND DENSITY FILTERING
ENGI, Martin1, GIUNTOLI, Francesco2, LANARI, Pierre1, BURN, Marco1 and KUNZ, Barbara E.1, (1)Department of Geological Sciences, University of Bern, Baltzerstrasse 1, Bern, CH3012, Switzerland, (2)School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth, PL4 8AA, United Kingdom, engi@geo.unibe.ch
 
3:10 PM
Discussion
 
3:25 PM
Break
3:40 PM
GARNET PETROCHRONOLOGY: THE CONTEXT OF THE OTHER POINT(S) ON THE ISOCHRON (Invited Presentation)
BAXTER, Ethan F., Department of Earth and Environmental Sciences, Boston College, 140 Commonwealth Ave, Chestnut Hill, MA 02467, ethan.baxter@bc.edu
4:00 PM
CONTEMPORANEOUS MIGMITIZATION AND GRANITE EMPLACEMENT DURING REGIONAL METAMORPHISM: EVIDENCE FOR MID-CRUSTAL CONTRIBUTION TO THE BATHOLITHS OF THE ARABIAN-NUBIAN SHIELD
ELISHA, Bar1, KATZIR, Yaron1 and KYLANDER-CLARK, Andrew2, (1)Department of Geological and Environmental Sciences, Ben Gurion University of the Negev, Be'er Sheva, 8410501, Israel, (2)Department of Earth Science, University of California, Santa Barbara, CA 93106, brelisha@gmail.com
4:15 PM
GEOLOGY AND ZIRCON U-PB AGES OF THE JIAMUSI-KHANKA AND ADJACENT BLOCKS IN THE CENTRAL ASIAN OROGENIC BELT
REN, Liudong, Institute of Geology, Chinese Academy of Geological Sciences, No 26, Baiwanzhuang Rd., Xicheng District, Beijing, 100037, China, ldren@cags.ac.cn
4:30 PM
TIMING OF METAMORPHISM AND DEFORMATION IN THE FOOTWALL OF THE MAIN MANTLE THRUST, SWAT VALLEY, PAKISTAN
LARSON, Kyle P.1, SHRESTHA, Sudip1, ALI, Asghar2, COTTLE, John M.3 and AHMAD, Rafique4, (1)Earth, Environmental and Geographic Sciences, University of British Columbia, Okanagan, 3247 University Way, Kelowna, BC V1V 1V7, Canada, (2)Earth, Environmental and Geographic Sciences, University of British Columbia, Okanagan, 3247 University Way, Kelowna, BC V1V 1V7, Canada; Department of Geology, University of Peshawar, Peshawar, 25120, Pakistan, (3)Dept of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93106-9630, (4)Department of Geology, Bacha Khan University, Charsadda, Pakistan, kyle.larson@ubc.ca
4:45 PM
TIMING OF METAMORPHISM, DUCTILE DEFORMATION, AND EXHUMATION IN THE LHAGOI KANGRI DOME, SOUTH-CENTRAL TIBET
DIEDESCH, Timothy F., Geology & Geography, Georgia Southern University, P.O. Box 8149, Statesboro, GA 30460, JESSUP, Micah J., Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, COTTLE, John M., Dept of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93106-9630 and ZENG, Linseng, Chinese Academy of Geological Sciences, Beijing, 100037, tdiedesch@georgiasouthern.edu
5:00 PM
ELECTRON MICROPROBE PETROCHRONOLOGY: NEW DATA AND NEW CHALLENGES FROM THE ADIRONDACK MOUNTAINS, NEW YORK
WILLIAMS, Michael L., Department of Geosciences, University of Massachusetts Amherst, 611 N Pleasant St, Amherst, MA 01003, JERCINOVIC, Michael J., Department of Geosciences, Univ of Massachusetts, Amherst, MA 01003 and GROVER, Timothy W., Dept. of Natural Sciences, Castleton State College, Castleton, VT 05735, mlw@geo.umass.edu
 
5:15 PM
Concluding Remarks
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