SHRIMP Lab News and Notices
(updated 6/10/2009) |
• Dr. Jorge Vazquez will be joining the U.S. Geological Survey August 31st as the Survey's staff scientist for the Stanford–USGS Ion Microprobe Laboratory. Dr. Vazquez was selected as a result of a national search for a research geologist to work with other Survey scientists in the laboratory and to develop new USGS research projects with the SHRIMP-RG.
Dr. Vazquez received his Bachelor's degree from California State University, Los Angeles, M.S. from Northern Arizona University, and Ph.D. from UCLA. Jorge studied pyroclastic-surge deposits and geology of the Hopi Buttes volcanic field, Arizona, for his Masters thesis. At UCLA, he focused on ion microprobe U–Th–Pb geochronology of allanite and zircon in Quaternary rhyolites (Toba Tuff, Indonesia; postcaldera rhyolites, Yellowstone) and on uranium-series geochemistry. His bibliography also includes papers on petrology and accessory mineral geochronology of young rhyolites from the Coso volcanic field and Salton Buttes, California, and plutonic rock fragments (xenoliths) from Hualalai and Mauna Kea volcanoes, Hawaii. Since 2004, Jorge has been Assistant Professor of Geology at California State University, Northridge. He brings a strong background in ion microprobe geochronology, igneous petrology, geochemistry, and volcanology to the SHRIMP lab. We look forward to his joining the SHRIMP lab team and to his involvement in research with Survey colleagues nationally.
•Joe Wooden retires from the USGS and begins a new era as a senior research associate within Stanford University's Department of Geological and Environmental Sciences (GES).
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With Joe's retirement from USGS, Charlie Bacon is now Co-Director for USGS at SUMAC.
•Frank Mazdab has left the USGS in order to find a new work situation. Frank has moved to Tucson. He will continue his established collaborations. Frank made a lasting contribution to the lab through development of trace element concentration measurements in accessory minerals.
Frank can be reached at fmazdab@email.arizona.edu
•Recently, Bettina Wiegand left SUMAC to return to Germany. Bettina's several years of work with the TIMS and SHRIMP helped to broaden the use of SUMAC facilities. Bettina can be reached at bwiegand@stanford.edu
•Notice to external users of the Stanford University/U.S. Geological Survey (USGS) Ion Probe. On October 1, 2007, user fees for external users (non-Stanford/USGS) will increase to $1700/day (24 hours). Please plan accordingly in budgets for future proposals.
SHRIMP Lab
Green Earth Sciences Building
367 Panama Street Room 89
Stanford, California USA
tel (650) 725-6536
fax (650) 724-6360
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SHRIMP RG
Sensitive High Resolution Ion Micro Probe Reverse Geometry
The SHRIMP RG is at Stanford University as a result of a partnership between the U.S. Geological Survey and Stanford University School of Earth Sciences. The laboratory is run for the mutual benefit of the two parties with cost and analytical time being shared. The laboratory is also available to outside visitors on a cost recovery basis as time allows.
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| Recent Research and Applications |
 GSA 2007 Shrimp-RG analysis of igneous and metamorphic minerals from the northern grouse creek mountains, Utah: new evidence for the timing of Mesozoic and Cenozoic metamorphism and deformation
GSA 2007 Hf and temperature (from Ti) variations in zircon: a new tool to evaluate petrologic processes in magmas
GSA 2007 Sr and ND isotopic evolution in Late Cretaceous lower to upper crustal granitic rocks from the transverse ranges, Southern California
GSA 2007 Trace element variability in titanite from diverse geologic environments
Tucson 2007 Using the temperature and compositional characteristics of zircon and titanite to better understand the petrogenesis of Mesozoic magmatism in the transverse ranges, California
AGU 2007 Integrating trace element abundances and derived temperatures for zircon and titanite to elucidate petrogenesis of a cretaceous granodiorite,Southern California
Goldschmidt 2006 Trace element analysis in zircon by ion microprobe(SHRIMP-RG) technique and applications
AGU 2006 Trace element analysis of accessory and rock-forming minerals by ion microprobe (SHRIP-RG)
Goldschmidt 2006 Temperatures (Ti) and compositional characteristics of zircon: early observations using high mass resolution on the USGS-Stanford SHRIMP-RG
•230Th-U dating of surficial deposits using the ion microprobe (SHRIMP-RG): A microstratigraphic perspective. Quaternary international (2007), Vol. 166.
doi:10.1016/j.quaint.2007.01.003
•Highlights from twenty publications chosen to illustrate the breadth of use by scientists from the USGS, Stanford and other institutions. (March 2006)
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