V33E:
Petrochronology 2.01 Posters


Submit an Abstract to this Session


Session ID#: 52057

Session Description:
Petrochronology is based on the integration of petrological P-T(-A-X) estimates with age data on the minerals that were used to calculate P and T. The apect that so far has received little attention is the role of major element mobility in controlling the thermobarometric record. When mobility is caused by open-system retrogression, petrologic equilibrium is lost; when equilibrium is preserved, it is still necessary to account for diffusive transport and to ascertain that the diffusion rate of the chronometric daughter isotopes is less or equal to the major element diffusion rates.

The present session endeavors to bring together experimental and theoretical work on all of the phenomena that affect petrochronology: (dis-)equilibrium thermobarometry, diffusion, mechanisms of open-system retrogression, high-resolution petrographic imaging, high-resolution multi-element microprobing, and in-situ geochronology.

Primary Convener:  Igor M Villa, University of Bern, Institute of Geological Sciences, Bern, Switzerland
Conveners:  Michael L Williams, University of Massachusetts, Amherst, MA, United States, Andrew R Kylander-Clark, UC Santa Barbara, Department of Earth Sciences, Santa Barbara, United States and Philippe Goncalves, Université de Bourgogne Franche-Comté, Lab. Chrono-Environnement, Besançon, France
Primary Liaison:  Igor M Villa, University of Bern, Institute of Geological Sciences, Bern, Switzerland
Chairs:  Igor M Villa, University of Bern, Institute of Geological Sciences, Bern, Switzerland, Andrew R Kylander-Clark, UC Santa Barbara, Department of Earth Sciences, Santa Barbara, United States and Michael L Williams, University of Massachusetts, Amherst, MA, United States
OSPA Liaison:  Igor M Villa, University of Bern, Institute of Geological Sciences, Bern, Switzerland

Cross-Listed:
  • MR - Mineral and Rock Physics
Index Terms:

1115 Radioisotope geochronology [GEOCHRONOLOGY]
3652 Pressure-temperature-time paths [MINERALOGY AND PETROLOGY]
8030 Microstructures [STRUCTURAL GEOLOGY]

Abstracts Submitted to this Session:

Directly Dating High-Temperature Deformation: Dynamic Recrystallization and U–Pb resetting of Titanite (346070)
Amy Catherine Moser1, Bradley R Hacker1 and Joshua Schwartz2, (1)University of California Santa Barbara, Department of Earth Science, Santa Barbara, CA, United States, (2)California State University Northridge, Geological Sciences, Northridge, CA, United States
Ages and Trace Element Patterns of Apatite and Zircon in a Diorite from the Mt. Papuk metamorphic complex (Pannonian Basin Basement in Croatia, CE Europe) (358754)
Dražen Balen1, Petra Schneider1, Joachim Opitz2 and Hans-Joachim Massonne2, (1)University of Zagreb, Department of Geology, Faculty of Science, Zagreb, Croatia, (2)Universität Stuttgart, Institut für Mineralogie und Kristallchemie, Stuttgart, Germany
Intra-grain chronological and compositional inhomogeneity of magmatic micas (404412)
Maria O Naumenko-Dèzes1, Yann Rolland1, Sylvain Gallet1, Pierre Lanari2 and Igor M Villa2,3, (1)Géoazur - Université Nice Sophia Antipolis, Valbonne, France, (2)University of Bern, Institute of Geological Sciences, Bern, Switzerland, (3)University of Milan - Bicocca, Department of Earth and Environmental Sciences, Milan, Italy
Dating Monazite in Migmatites Does Not Always Mean Dating Only Partial Melting: a Case Study from the CAGE District, Torngat Orogeny (Canada) (433405)
Pierre Trap, University of Franche-Comté, Besançon, France, Philippe Goncalves, Université de Bourgogne Franche-Comté, Lab. Chrono-Environnement, Besançon, France and Pauline Jeanneret, Post-doctoral researcher, Department of Earth Sciences Mineralogy–Petrology-Tectonics, Uppsala, Sweden
PT Estimates for Garnet Amphibolites from Boone, Eastern Blue Ridge, North Carolina (440131)
Matthew Goulding Guilin, University of North Carolina at Charlotte, Department of Geography and Earth Sciences, Charlotte, NC, United States and Celine Martin, American Museum of Natural History, Department of Earth and Planetary Sciences, New York, NY, United States; American Museum of Natural History, Earth and Planetary Sciences, New York, NY, United States
Prolonged fluid-driven resetting of titanite following ultrahigh-temperature metamorphism in southern Madagascar (452244)
Robert M Holder, University of Michigan, Department of Earth and Environmental Sciences, Ann Arbor, United States; Johns Hopkins University, Balitmore, MD, United States and Bradley R Hacker, University of California Santa Barbara, Santa Barbara, CA, United States

See more of: Volcanology, Geochemistry and Petrology