V12B:
Petrochronology and Microstructural Geochronology I

Submit an Abstract to this Session



Session ID#: 35783

Session Description:
Nano- and micro-scale analytical techniques (LASS, SIMS, EPMA, EBSD, TEM, APT, etc.) allow radiometric dates (e.g., U-Pb) to be obtained from the same volume of material as mineral orientation and composition. Such datasets can be used to study a range of important processes at the mineral, orogen, and planet scales. This session coincides with the launch of the AGU monograph “Microstructural Geochronology” and focuses on the collection, statistical analysis, modeling, and interpretation of petrochronologic data.
Primary Convener:  Robert M Holder, University of Michigan, Department of Earth and Environmental Sciences, Ann Arbor, United States
Conveners:  Desmond Moser, University of Western Ontario, Department of Earth Sciences, London, ON, Canada, Kim Tait, Royal Ontario Museum, Natural History, Mineralogy, Toronto, ON, Canada and James Darling, University of Portsmouth, Portsmouth, United Kingdom
Chairs:  Kim Tait, Royal Ontario Museum, Natural History, Mineralogy, Toronto, ON, Canada, Desmond Moser, University of Western Ontario, Department of Earth Sciences, London, ON, Canada, Robert M Holder, University of Michigan, Ann Arbor, United States and James Darling, University of Portsmouth, Portsmouth, United Kingdom
OSPA Liaison:  Desmond Moser, University of Western Ontario, Department of Earth Sciences, London, ON, Canada

Cross-Listed:
  • MR - Mineral and Rock Physics
  • P - Planetary Sciences
  • T - Tectonophysics
  • T - Tectonophysics
Index Terms:

1140 Thermochronology [GEOCHRONOLOGY]
1160 Planetary and lunar geochronology [GEOCHRONOLOGY]
3640 Igneous petrology [MINERALOGY AND PETROLOGY]
3660 Metamorphic petrology [MINERALOGY AND PETROLOGY]

Abstracts Submitted to this Session:

Concentrations of trace elements in accessory mineral chronometers: insights from forward modeling of migmatites (Invited) (243889)
Chris Yakymchuk, University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, Chris L. Kirkland, Curtin University, Applied Geology, Perth, Australia and Christopher Clark, Curtin University, Perth, WA, Australia
New Zircon-Melt Partition Coefficients from Natural Zircon-Glass Pairs Elucidate Magmatic Storage and Interactions beneath Mount St. Helens Volcano (274855)
Lily L Claiborne, Vanderbilt University, Earth and Environmental Sciences, Nashville, TN, United States, Calvin F Miller, Vanderbilt University, Earth and Environmental Sciences, Nashville, United States, Guilherme A R Gualda, Vanderbilt University, Department of Earth and Environmental Sciences, Nashville, TN, United States and Tamara Carley, Lafayette College, Easton, PA, United States
A 4.43 Ga Transition from Mega-impact to Habitability Deduced from Microstructural Geochronology of Martian Zircon and Baddeleyite (264405)
Desmond Moser1, David A Reinhard2, David Philip Larson2, Francis McCubbin3, James Darling4, Lee Frances White4, Gabriel Arcuri5, Anthony J Irving6, Kimberly Tait7 and Ivan Barker5, (1)University of Western Ontario, Department of Earth Sciences, London, ON, Canada, (2)Cameca Instruments Inc., Madison, WI, United States, (3)NASA Johnson Space Center, Houston, TX, United States, (4)University of Portsmouth, Portsmouth, United Kingdom, (5)University of Western Ontario, London, ON, Canada, (6)University of Washington, Earth & Space Sciences, Seattle, WA, United States, (7)Royal Ontario Museum, Centre for Applied Planetary Mineralogy, Toronto, ON, Canada
Nano-Scale Structure of Twin Boundaries in Shocked Zircon from the Vredefort Impact Structure. (297862)
Thomas G Sharp, Arizona State University, School of Earth & Space Exploration, Tempe, AZ, United States and Aaron J Cavosie, School of Earth and Planetary Science, Curtin University, Perth, Australia
Deformation Enhanced Recrystallization of Titanite: Insight from the Western Gneiss Region Ultrahigh-Pressure Terrane (237170)
Stacia M Gordon1, Steve M. Reddy2, Hannah Blatchford3, Donna L Whitney4, Chris L. Kirkland2, Christian P Teyssier3, Noreen J. Evans2 and Brad McDonald2, (1)University of Nevada, Reno, Department of Geological Sciences and Engineering, Reno, United States, (2)Curtin University, Applied Geology, Perth, Australia, (3)University of Minnesota Twin Cities, Department of Earth & Environmental Sciences, Minneapolis, United States, (4)University of Minnesota, Minneapolis, MN, United States
Exsolution lamellae as fast diffusion pathways in rutile: implications for U-Pb thermochronology and Zr thermometry (Invited) (236669)
Andrew Smye1, Spencer Seman2, Nick M W Roberts3, Daniel James Condon3 and Bill Davis4, (1)Pennsylvania State University Main Campus, Department of Geosciences, University Park, United States, (2)Pennsylvania State University Main Campus, Department of Geological Sciences, University Park, PA, United States, (3)NERC Isotope Geosciences Laboratory, Keyworth, United Kingdom, (4)Geological Survey of Canada, Ottawa, Canada
Mixed Messages from Garnet Lu-Hf and Sm-Nd Geochronology (283256)
Jeffrey D. Vervoort1, Da Wang2 and Thomas A Johnson2, (1)Washington State University, School of the Environment, Pullman, WA, United States, (2)Washington State University, Pullman, WA, United States

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