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USGS Staff Profile:

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   abstract: Physical Scientist with the Geology, Energy & Minerals Science Center
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   abstract: Graham Lederer is a Physical Scientist for the USGS Geology, Energy
     & Minerals (GEM) Science Center in Reston, VA.
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   abstract: "In my role at the U.S. Geological Survey, I study the supply of materials\
     \ important to society through materials flow analysis and mineral resource\
     \ assessment. Materials flow analysis provides a quantitative framework for\
     \ understanding how mineral resources are transformed into mineral commodities\
     \ and enter industrial supply chains through processes like primary production,\
     \ trade, manufacturing, end use, and recycling. Mineral resource assessment\
     \ involves characterizing mineral deposits and integrating geological, geochemical,\
     \ and geophysical datasets to better understand how and where minerals resources\
     \ are concentrated in the Earth.As a geologist, I am primarily interested in\
     \ the physical and chemical evolution of the Earth\u2019s crust. My research\
     \ on ancient and modern orogens focuses on the many processes that create and\
     \ modify continental crust including deformation, metamorphism, partial melting,\
     \ and magmatism. Interpreting the spatial and temporal patterns of these petrogenetic\
     \ processes requires a combination of field- and laboratory-based techniques\
     \ including detailed structural mapping, microstructural analysis, trace element\
     \ geochemistry, and accessory phase geochronology. To date, my projects have\
     \ ranged from characterizing strain in the Grenville basement complex of the\
     \ Virginia Blue Ridge, constraining the timescales of partial melting in the\
     \ Himalayan mid-crust through U-Th-Pb dating of syn-tectonic leucogranites,\
     \ evaluating rare earth phosphate mineralization mechanisms in Proterozoic gneisses\
     \ of eastern California, and assessing the timing and tempo of large igneous\
     \ provinces associated with catastrophic changes in Earth history."
   additionalType: personal statement
 email: glederer@usgs.gov
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   name: 'Ph.D. Geological Sciences, University of California Santa Barbara (2014)
     - Timescales of crustal anatexis: monazite petrochronology of Himalayan granites
     (Advisor: Dr. J. M. Cottle)'
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   name: 'B.S. Geology and Environmental Science, College of William and Mary (2009)
     - Geology and structural history of the Blue Ridge basement complex, Albemarle
     County, Virginia (Advisor: Dr. C. M. Bail'
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   name: Physical Scientist, United States Geological Survey (2015-present)
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   name: Postdoctoral Associate, Massachusetts Institute of Technology (2014-2015)
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   name: Teaching Associate, University of California Santa Barbara (2014)
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   name: Geologist, United States Geological Survey (2011)
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