A Japanese-American weekend in the Sierras

DONNER PASS, CA – Geology majors Brittany Klemm (’14) and Christina Colburn(’13) spent the weekend with Dr. Burmeister and members of the Japanese Granite Study Group examining the petrogenesis of granitic plutons in the Donner Pass area of the Northern Sierra Nevada, just west of Donner Lake (the site of the infamous Donner Partytragedy) and Truckee, CA. We were treated to a personal tour of impressive, world-class exposures of intrusive contact relationships, mafic enclave swarms, and crystal cumulate plies. The culmination of the trip involved a steep, morning hike to the ridge line above theold Central Pacific tunnels and snow shed structures at Donner Pass to examine outcrops of a very unusual diopside-hornblende diorite. We were sure to share the finest in northern Californian culture with the group – we went for a nice evening stroll around old town Truckee and even took them to dinner at a historic 50′s style diner! The field trip was co-led by Dr. Kenichiro (Ken) Tani from the Institute for Research on Earth Evolution of the Japan Agency for Marine-Earth Science and Technology (IFREE/JAMSTEC… which is the Japanese equivalent of our National Science Foundation‘s Division of Earth Sciences) andDr. Ryo Anma (University of Tsukuba). The group also included Dr. Tatsuo Kanamaru (Nihon University), Dr. Yoshimitsu Suda (Meiji University), Kazue Suzuki and Masaoki Uno (Tokyo Institute of Technology). It was great to see Dr. Anma again – we last spent time with Dr. Anma when he and his students joined us for a whirlwind tour of the geologic wonders of the Colorado Plateau in the Spring of 2012.

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