Session: Plutons and Their Host Rocks in the Sierra Nevada Batholith: A Forum and Discussion on Magma Emplacement, Magmatic Differentiation, and Pluton Solidification (Posters) (Cordilleran Section - 101st Annual Meeting (April 29

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REGIONAL AND EMPLACEMENT-RELATED TECTONISM DURING INTRUSION OF THE TUOLUMNE BATHOLITH: RESULTS FROM THE BENSON LAKE AND MAY LAKE PENDANTS, SIERRA NEVADA, CALIFORNIA

MEMETI, Valbone, Department of Earth Sciences, Univ of Southern California, 3651 Trousdale Parkway, SCI 117, Los Angeles, CA 90089, ECONOMOS, Rita C., Earth Sciences, Univ of Southern California, 3651 Trousdale Parkway, ZMB 117, Los Angeles, CA 90089, ERDMANN, Saskia, Earth Sciences, Dalhousie Univ, Life Sciences Center, Room 3006, Halifax, B3H 4J1, PATERSON, Scott, Dept. of Earth Sciences, Univ of Southern California, 3651 Trousdale Ave, Los Angeles, CA 90089-0740 and MILLER, Robert, Department of Geology, San Jose State Univ, San Jose, CA 95192-0102, memeti@usc.edu, memeti@usc.edu

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LADDER DIKES HOSTED IN METAVOLCANIC WALL ROCK AND “THE VORTEX”: MAGMATIC STRUCTURES FROM THE CENTRAL SIERRA NEVADA, CALIFORNIA

LAW, Bryan S., Department of Geological Sciences, Univ of Nevada, Reno, Reno, NV 89557, GLAZNER, Allen F., Department of Geological Sciences, Univ of North Carolina, CB# 3315, Mitchell Hall, Chapel Hill, NC 27599-3315 and SCHWEICKERT, Richard A., Department of Geological Sciences, Mackay School of Mines-University of Nevada, Reno, Geological Sciences/172, Reno, NV 89557, glaucophane@att.net, glaucophane@att.net

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THE SENTINEL GRANODIORITE: STRUCTURE, EMPLACEMENT, AND RELATION TO THE TUOLUMNE INTRUSIVE SUITE, CENTRAL SIERRA NEVADA BATHOLITH, CALIFORNIA

PETSCHE, Joseph M., MILLER, Robert B. and BURGESS, Seth D., Dept. of Geology, San Jose State Univ, San Jose, CA 95192-0102, chertnodule@yahoo.com, chertnodule@yahoo.com

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30

FIELD EVIDENCE FOR THE ASSEMBLY OF THE HALF DOME PLUTON BY AMALGAMATION OF SMALL INTRUSIONS

COLEMAN, Drew S., Department of Geological Sciences, Univ of North Carolina, CB#3315, Mitchell Hall, Chapel Hill, NC 27599-3315, BARTLEY, John M., Department of Geology and Geophysics, Univ of Utah, 135 S. 1460 E., Rm 719, Salt Lake City, UT 84112, GLAZNER, Allen F., Department of Geological Sciences, Univ of North Carolina, CB# 3315, Mitchell Hall, Chapel Hill, NC 27599-3315 and RATAJESKI, Kent, Department of Earth Sciences, Montana State University, Bozeman, MT 59717, dcoleman@unc.edu, dcoleman@unc.edu

5

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FIELD, GEOCHEMICAL, AND GEOCHRONOLOGIC EVIDENCE FOR RECHARGING IN A MUSHY MAGMA RESERVOIR: CATHEDRAL PEAK GRANODIORITE, TUOLUMNE INTRUSIVE SUITE, SIERRA NEVADA BATHOLITH, CALIFORNIA

BURGESS, Seth D. and MILLER, Jonathan S., Department of Geology, San Jose State Univ, San Jose, CA 95192, sburgess@geosun.sjsu.edu, sburgess@geosun.sjsu.edu

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XENOLITHS, FOLIATIONS, AND FOLDS IN A BIG TANK FILLED BY MANY SMALL INCREMENTS

WOLAK, Jeannette M., YOSHINOBU, Aaron S. and BARNES, Cal G., Dept. of Geosciences, Texas Tech Univ, Lubbock, TX 79409-1053, aaron.yoshinobu@ttu.edu, aaron.yoshinobu@ttu.edu

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ENIGMATIC EAST-WEST FABRICS IN THE TUOLUMNE BATHOLITH; IS THERE A TECTONIC SIGNIFICANCE?

ECONOMOS, Rita C., Earth Sciences, Univ of Southern California, 3651 Trousdale Parkway, ZMB 117, Los Angeles, CA 90089, ERDMANN, Saskia, Earth Sciences, Dalhousie Univ, Room 3006, Life Sciences Centre, Dalhousie University, Halifax, B3H 4J1, MEMETI, Valbone, Department of Earth Sciences, Univ of Southern California, 3651 Trousdale Parkway, SCI 117, Los Angeles, CA 90089, PATERSON, Scott, Dept. of Earth Sciences, Univ of Southern California, 3651 Trousdale Ave, Los Angeles, CA 90089-0740 and MILLER, Robert, Department of Geology, San Jose State Univ, San Jose, CA 95192-0102, economos@usc.edu, economos@usc.edu

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STRUCTURE AND EMPLACEMENT OF THE BUENA VISTA CREST INTRUSIVE SUITE, SIERRA NEVADA BATHOLITH, CALIFORNIA

MCFARLAN, Renee M. and MILLER, Robert B., Dept. of Geology, San Jose State Univ, San Jose, CA 95192-0102, rmcfarlan@yahoo.com, rmcfarlan@yahoo.com

9

35

THE JACKASS LAKES PLUTON: EVIDENCE FOR COMPLEX SPATIAL AND TEMPORAL MAGMA CHAMBER EVOLUTION IN THE SIERRA NEVADA BATHOLITH

PIGNOTTA, Geoffrey S., PATERSON, Scott R. and COYNE, Claire M., Department of Earth Sciences, Univ of Southern California, Los Angeles, CA 90089-0740, pignotta@usc.edu, pignotta@usc.edu

10

36

STRUCTURAL EVOLUTION OF THE SING PEAK PENDANT: IMPLICATIONS FOR MAGMA CHAMBER CONSTRUCTION AND MID-CRETACEOUS DEFORMATION IN THE CENTRAL SIERRA NEVADA, CALIFORNIA

KRUEGER, R.J. and YOSHINOBU, A.S., Geosciences, Texas Tech Univ, Box 41053, Lubbock, TX 79409, rjkrueger_1@yahoo.com, rjkrueger_1@yahoo.com

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FRACTURES IN THE CRETACEOUS PLUTONS OF LITTLE LAKES VALLEY, EASTERN SIERRA NEVADA: COOLING STRUCTURES OR THE RESULT OF REGIONAL TECTONIC STRESS?

GASCHNIG, Richard M., GLAZNER, Allen F. and COLEMAN, Drew, Department of Geological Sciences, Univ of North Carolina, CB# 3315, Chapel Hill, NC 27599, gaschnig@email.unc.edu, gaschnig@email.unc.edu

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38

FIELD EVIDENCE FOR INCREMENTAL ASSEMBLY OF THE LAMARCK GRANODIORITE THROUGH DIKE INTRUSION, DUSY BASIN, KINGS CANYON NATIONAL PARK, CALIFORNIA

GRACELY, John T., Department of Geological Sciences, Univ of North Carolina, CB# 3315, Chapel Hill, NC 27599-3315 and COLEMAN, Drew S., Department of Geological Sciences, Univ of North Carolina, CB# 3315, Chapel Hill, NC 27599, gracely@email.unc.edu, gracely@email.unc.edu

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PASSIVE EMPLACEMENT OF A COMPOSITE FELSIC PLUTON IN A ZONE OF INTRA-ARC EXTENSION: MODELING DEVELOPMENT OF THE MOUNT WHITNEY INTRUSIVE SUITE, SIERRA NEVADA, CALIFORNIA

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

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THE CASE AGAINST MAGMATIC STOPING

GLAZNER, Allen F., Department of Geological Sciences, Univ of North Carolina, CB# 3315, Chapel Hill, NC 27599 and BARTLEY, John M., Geology and Geophysics, Univ of Utah, 135 S 1460 E, 717 WBB, Salt Lake City, UT 84112-0111, afg@unc.edu, afg@unc.edu

Cordilleran Section - 101st Annual Meeting (April 29–May 1, 2005)

S5. Plutons and Their Host Rocks in the Sierra Nevada Batholith: A Forum and Discussion on Magma Emplacement, Magmatic Differentiation, and Pluton Solidification (Posters)