V23A:
Analytical Developments and New Applications for U-Pb Mineral Geochronology II Posters

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Session ID#: 13948

Session Description:
U-Pb geochronology plays a central and expanding role in determining the chronology of igneous, metamorphic and tectonic events, sedimentary provenance, and the potential for reliable ages of sedimentation.  A variety of analytical instruments (TIMS, SIMS, LA-ICPMS, EMPA) and minerals (zircon, monazite, baddeleyite, rutile, titanite, apatite, allanite, perovskite, hematite, xenotime, calcite, etc) are used.  More recently, isotopic ratio tracers and elemental concentrations are measured in the same crystals dated by U-Pb to link timing of geologic events to sources, equilibration temperatures and petrogenetic processes.
This session welcome contributions on (1) reducing analytical uncertainties in U-Pb zircon geochronology by crystal pretreatment (annealing, chemical abrasion), optimization of measurement parameters and data processing procedures, and the use of suitable standard reference materials; (2) analytical developments and geological applications of U-Pb geochronology for minerals other than zircon; and (3) studies that combine U-Pb ages with isotopic tracer and/or elemental concentration data for the same mineral.
Primary Convener:  Paul Sylvester, Texas Tech University, Lubbock, TX, United States
Convener:  Kate Souders, USGS Geological Survey, Denver, United States
Chairs:  Kate Souders, USGS Geological Survey, Denver, United States and Paul Sylvester, Texas Tech University, Lubbock, TX, United States
OSPA Liaison:  Paul Sylvester, Texas Tech University, Lubbock, TX, United States
Index Terms:

1115 Radioisotope geochronology [GEOCHRONOLOGY]
1140 Thermochronology [GEOCHRONOLOGY]
1165 Sedimentary geochronology [GEOCHRONOLOGY]
1194 Instruments and techniques [GEOCHRONOLOGY]

Abstracts Submitted to this Session:

A New Zircon Concentrating Table Designed for Geochronologists (168548)
Trevor A Dumitru, Jasper Canyon Research Inc., Palo Alto, CA, United States
Connecting the U-Th and U-Pb Chronometers: New Algorithms and Applications (198460)
Noah Morgan McLean1, Christopher James Martin Smith2, Nick M W Roberts3 and David A Richards2, (1)University of Kansas, Lawrence, KS, United States, (2)University of Bristol, Bristol, United Kingdom, (3)NERC Isotope Geosciences Laboratory, Keyworth, United Kingdom
Matrix effects for elemental fractionation within ICPMS: applications for U-Th-Pb geochronology (197549)
Wei Chen, China University of Geosciences Wuhan, Wuhan, China
Timing and origin of ignimbrites exposed in the Palmarejo and Guazapares mining districts in western Chihuahua: Implications for the genesis of Ag-Au epithermal deposits (193277)
Munazzam Ali Mahar, Arturo Ramirez and Philip Goodell, University of Texas at El Paso, El Paso, TX, United States
Geochronology of the Thompson Creek Mo Deposit: Evidence for the Formation of Arc-related Mo Deposits (145708)
Connor David Lawrence, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Drew Steven Coleman, Univ North Carolina, Chapel Hill, United States and Holly J Stein, Colorado State University, AIRIE Program, Fort Collins, CO, United States
U-Pb Detrital Geochronology of the Siwalik Group Western Nepal: Implication of Provenance Analysis of Neogene Foreland Basin (137714)
Upendra Baral, Institute of Fundamental Research and Studies, Earth Sciences, Kathmandu, Nepal, Lin Ding, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China and Deepak Chamlagain, Tribhuvan University, Department of Geology, Tri-Chandra College, Kathmandu, Nepal
Constraining Metamorphic Timing and Processes by Dating Garnet, Zircon, Titanite and Monazite in UHP and HP Rocks from Weihai, Sulu UHP Terrane, Eastern China (184526)
Da Wang, Carnegie Inst Washington, Department of Terrestrial Magnetism, Washington, DC, United States, Jeffrey D. Vervoort, Washington State University, School of the Environment, Pullman, WA, United States, Christopher M Fisher, University of Alberta, Earth & Atmospheric Sciences, Edmonton, AB, Canada and Hui Cao, CAGS Chinese Academy of Geological Sciences, Beijing, China
Fluorine in titanite: an overlooked matrix compositional parameter that can affect accuracy of calculated U/Pb ages measured by SIMS (196947)
Matthew A Coble, Stanford University, Geological Sciences, Stanford, CA, United States
SIMS Constraints on the Near-Eruption Crystallization of Accessory Minerals from Intracontinental Rhyolites of the Western United States (193152)
Jorge A Vazquez1, Mark E Stelten2, Naomi Elizabeth Matthews3, Mae Marcaida2, Heather Michelle Nicholson Wright4 and Andrew T Calvert2, (1)U.S. Geological Survey, Menlo Park, United States, (2)USGS, Menlo Park, CA, United States, (3)Universitetet i Stavanger, Department of Petroleum Engineering, Stavanger, Norway, (4)USGS Cascades Volcano Observatory, Vancouver, WA, United States
In detail monazite characterization in a carbonatite weathering profile – a new tool for landscape geochronology (156472)
Axel D Renno1, Loїc Le Bras1, René Ziegenrücker1, Frederic Couffignal2, Michael Wiedenbeck3, Sabine Haser4 and Gregor Hlawacek5, (1)Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany, (2)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Section 3.1: Inorganic and Isotope Geochemistry, Potsdam, Germany, (3)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (4)TU Bergakademie Freiberg, Institute of Mineralogy, Freiberg, Germany, (5)Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
Seeing is Believing: Mapping U-Pb-He distribution in zircon by laser ablation/noble gas mass-spectrometry and implications for geo-thermochronology (145834)
Noreen Evans1, Danisik Martin1, Brent McInnes1, Christopher Kirkland1, Brad McDonald1 and Thomas Becker2, (1)Curtin University, Applied Geology, Perth, Australia, (2)Curtin University, Department of Chemistry, Perth, WA, Australia
Assessing the 40K decay constant by intercalibration with U-Pb, Rb-Sr and K-Ca chronometers (135572)
Maria O Naumenko-Dèzes1, Thomas F Nagler2, Klaus Mezger2 and Igor M Villa3, (1)Bureau de recherches géologiques et minières (BRGM), Orléans, France, (2)University of Bern, Bern, Switzerland, (3)University of Milan - Bicocca, Milan, Italy
A Progress Report to the EARTHTIME Argon Inter-Calibration Pipette System (APSI): Still Smoking from the Same Pipe (194651)
Brent D Turrin1, Carl C Swisher III1, Sidney R Hemming2, Paul R Renne3, Kip V Hodges4, Matthijs C Van Soest5, Matthew Thomas Heizler6 and Alan L Deino7, (1)Rutgers University, Geol. Sciences, Piscataway, NJ, United States, (2)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, (3)Berkeley Geochronology Center, Berkeley, United States, (4)Arizona State University, School of Earth and Space Exploration, Tempe, United States, (5)Arizona State University, School for Earth and Space Exploration, Tempe, AZ, United States, (6)New Mexico Institute of Mining and Technology, Bureau of Geology and Mineral Resources, Socorro, NM, United States, (7)Berkeley Geochronology Center, Berkeley, CA, United States

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