Item talk:Q47491

usgs_staff_profile:

 meta:
   status_code: 200
   timestamp: '2023-09-30T17:11:27.593599'
   url: https://www.usgs.gov/staff-profiles/graham-w-lederer
 profile:
   abstracts: []
   affiliations: []
   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'
   email: glederer@usgs.gov
   expertise_terms:
   - Mineral Resource Assessment
   - Economic Geology
   - Materials Flow Analysis
   - Geochronology
   honors: []
   intro_statements:
   - Graham Lederer is a Physical Scientist for the USGS Geology, Energy & Minerals
     (GEM) Science Center in Reston, VA.
   name: Graham W. Lederer, Ph.D.
   name_qualifier: null
   orcid: 0000-0002-9505-9923
   organization_link: https://www.usgs.gov/centers/geology-energy-and-minerals-science-center
   organization_name: Geology, Energy & Minerals Science Center
   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."
   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)
   title: Physical Scientist