Geological Society of America

8:00 AM

FLUID-MEDIATED DEFORMATION LEADS TO WEAKENING, STRENGTHENING AND BLOCK-IN-MATRIX STRUCTURES DURING PROGRADE SUBDUCTION AND MELANGE FORMATION

Cailey Condit, University of Washington, Seattle, WA and Eirini Poulaki, University of Washington, Seattle, WA and Peter Lindquist, University of Washington, Seattle, WA and Claire I.O. Nichols, University of Oxford, Oxford and Megan Ferrell, University of California, San Diego, La Jolla, CA and Margo Odlum, University of California San Diego, La Jolla, CA and Will Hoover, University of Washington, N/A and Victor Guevara, Amherst College, Amherst, MA

404933 (Technical Sessions)

8:15 AM

FLUID CHANGES ALONG A TRANSECT OF QUARTZITE FROM STRONG TO WEAK: WHERE DID THE WATER GO?

Sven Morgan, University of Michigan-Dearborn, Dearborn, MI and Sarah F. Trevino, University of Wisconsin–Madison, Madison, WI and James Student, Mount Pleasant, MI and Kouki Kitajima, University of Wisconsin-Madison, Madison, WI and M.J. Spicuzza, University of Wisconsin-Madison, Madison, WI

403998 (Technical Sessions)

8:30 AM

THE MECHANICAL BEHAVIOR OF NATURALLY DEFORMED QUARTZ IN THE FOLDED CONTACT AUREOLE OF THE EUREKA VALLEY – JOSHUA FLAT – BEER CREEK (EJB) COMPOSITE PLUTON

Sarah F. Trevino, University of Wisconsin - Madison, Madison, WI and Sven Morgan, University of Michigan-Dearborn, Dearborn, MI and James Student, Mount Pleasant, MI and Nicolas Roberts, Department of Geosciences, Clinton, NY

404168 (Technical Sessions)

8:45 AM

RESOLVING RAPID TIMESCALES OF METEORIC WATER-FACILITATED STRAIN-SOFTENING IN THE DUCTILE CRUST: AN EXAMPLE FROM THE CORDILLERA BLANCA SHEAR ZONE, PERUVIAN ANDES

Tyler Grambling, Colorado College, Colorado Springs, CO and Micah J. Jessup, University of Tennessee, Knoxville, TN and Dennis Newell, Utah State University, Logan, UT and Andreas Mulch, Goethe University Frankfurt, Frankfurt and Katharina Methner, Universitӓt Leipzig, Leipzig and Matthew Heizler, New Mexico Geochronology Research Laboratory, Socorro, NM

404588 (Technical Sessions)

9:15 AM

DEFINING THE MAIN MÁRTIR THRUST IN BAHĹA DE LOS ÁNGELES, BAJA CALIFORNIA, MEXICO

Caitlin O'Keefe, San Diego State University, San Diego, CA and Rafael Almeida, San Diego State University, San Diego, CA and David Kimbrough, San Diego State University, San Diego, CA

403768 (Technical Sessions)

9:30 AM

TWO HIGH-TEMPERATURE METAMORPHIC EVENTS PRESERVED IN DETRITAL ZIRCONS FROM THE METAMORPHIC SOLE OF THE FEATHER RIVER BELT, NORTHERN SIERRA NEVADA, CALIFORNIA

David Shimabukuro, California State University, Sacramento, CA and Erica Sanborn, California State University, Sacramento, Sacramento, CA and John Wakabayashi, California State University, Fresno, CA and Joel DesOrmeau, University of Nevada, Reno, Reno, NV and Robinson Cecil, California State University Northridge, Northridge, CA

404083 (Technical Sessions)

9:45 AM

MANTLE DYNAMICS BELOW SOUTHWESTERN CANADA: SMALL-SCALE CONVECTION AND IMPLICATIONS FOR THE THIN CORDILLERA LITHOSPHERE

Claire Currie, University of Alberta, Edmonton, AB and Tai-chieh Yu, University of Alberta, Edmonton, AB and Amar Jyoti Baruah, University of Alberta, Edmonton, AB

403489 (Technical Sessions)

10:00 AM

NORTHERN SIERRA NEVADA PALEOZOIC-MESOZOIC TECTONIC EVOLUTION RESPECULATED

John Wakabayashi, California State University, Fresno, CA

403609 (Technical Sessions)

10:15 AM

BASIN-SCALE VALIDATION OF STABLE ISOTOPE PALEOALTIMETRY IN THE INTERMONTANE WESTERN USA

Tara Lonsdorf, University of Michigan, Ann Arbor, MI and Nathan Niemi, University of Michigan, Ann Arbor, MI

402787 (Technical Sessions)

225 D22. Recent Advances in Structural Geology & Tectonics

Presentations