Item talk:Q47491
From geokb
orcid:
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usgs_staff_profile:
meta: url: https://www.usgs.gov/staff-profiles/graham-w-lederer timestamp: '2024-01-30T18:39:22.434276' status_code: 200 profile: name: Graham W. Lederer, Ph.D. name_qualifier: null titles: - Physical Scientist organizations: - !!python/tuple - Geology, Energy & Minerals Science Center - https://www.usgs.gov/centers/geology-energy-and-minerals-science-center email: glederer@usgs.gov orcid: 0000-0002-9505-9923 intro_statements: - Graham Lederer is a Physical Scientist for the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA. expertise_terms: - Mineral Resource Assessment - Economic Geology - Materials Flow Analysis - Geochronology professional_experience: - Physical Scientist, United States Geological Survey (2015-present) - Postdoctoral Associate, Massachusetts Institute of Technology (2014-2015) - Teaching Associate, University of California Santa Barbara (2014) - Geologist, United States Geological Survey (2011) education: - 'Ph.D. Geological Sciences, University of California Santa Barbara (2014) - Timescales of crustal anatexis: monazite petrochronology of Himalayan granites (Advisor: Dr. J. M. Cottle)' - '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' affiliations: [] honors: [] abstracts: [] personal_statement: "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."
