V31B:
Partial Melting During High-Grade Metamorphism: Implications for Orogenic Systems II Posters

Submit an Abstract to this Session



Session ID#: 22649

Session Description:
During orogenesis, deep crustal rocks commonly reach pressure–temperature conditions sufficient for partial melting to occur, either during burial or exhumation. The presence of melt has major rheologic implications for mountain building, as it changes the viscosity, density, and how strain is partitioned during orogenesis. In addition, melt extraction and magma emplacement contribute to crustal differentiation and stabilization over geologic time. These combined processes may also drive the collapse and exhumation of orogenic belts, and aid in exhuming (ultra)high-pressure terranes. This session seeks contributions that investigate the quantity, timing, and/or conditions at which partial melting occurs in different geodynamic environments, and the implications that anatexis has on the evolution of orogenic belts and subducted crustal material. We encourage abstracts that use a variety of techniques, such as field mapping, phase equilibria modeling, petrochronology, geochemistry, and geodynamic and/or geophysical modeling.
Primary Convener:  Stacia M Gordon, University of Nevada, Reno, Department of Geological Sciences and Engineering, Reno, United States
Conveners:  Chris Yakymchuk, University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada and Richard Mark Palin, Colorado School of Mines, Department of Geology and Geological Engineering, Golden, CO, United States
Chairs:  Chris Yakymchuk, University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, Richard Mark Palin, Colorado School of Mines, Department of Geology and Geological Engineering, Golden, CO, United States and Stacia M Gordon, University of Nevada, Reno, Department of Geological Sciences and Engineering, Reno, United States
OSPA Liaison:  Richard Mark Palin, Colorado School of Mines, Department of Geology and Geological Engineering, Golden, CO, United States
Co-Organized with:
Volcanology, Geochemistry and Petrology, and Tectonophysics

Cross-Listed:
  • T - Tectonophysics
Index Terms:

3660 Metamorphic petrology [MINERALOGY AND PETROLOGY]
8160 Rheology: general [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]
8412 Reactions and phase equilibria [VOLCANOLOGY]

Abstracts Submitted to this Session:

Is Fe-Ti type orogenic peridotite of crustal cumulate origin? Implication from Svartberget garnet peridotite/pyroxenite (Western Gneiss Complex, SW Norway) (207826)
Tzen-Fu Yui, Academia Sinica, Taipei, Taiwan, Hao-Tsu Chu, Central Geological Survey, Taipei, Taiwan, Poyan Shen, National Sun Yat-sen University, Department of Materials and Optoelectronic Science, Kaohsiung, Taiwan, Shyh-Lung Hwang, National Dong Hwa University, Department of Materials Science and Engineering, Hualien, Taiwan and Simon John Cuthbert, Univ of the West of Scotland, Paisley, United Kingdom
Numerical Simulations of the Thermodynamic Process of Granite Formation on the Geological model of In-situ Melting (236181)
Zhen Chen1, Yue-Jun Wang1, Guo-Neng Chen1, Jie Liu2 and Yong-Jiang Liu3, (1)Sun Yat-Sen University, School of Earth Sciences and Engineering, Guangzhou, China, (2)School of Earth Sciences and Geological Engineering, Sun Yat-sen University, Guangzhou, China, (3)Jilin University, College of Earth Sciences, Jilin, China
SEPARATING MULTIPLE EPISODES OF PARTIAL MELTING IN POLYOROGENIC CRUST: AN EXAMPLE FROM THE HAIYANGSUO COMPLEX, NORTHERN SULU BELT, EASTERN CHINA (237204)
Peng Feng1, Lu Wang2, Michael Brown3 and Songjie Wang1, (1)China University of Geosciences Wuhan, State Key Laboratory of Geological Processes and Mineral Resources, and Center for Global Tectonics, School of Earth Sciences, Wuhan, China, (2)China University of Geosciences, Wuhan, State Key Laboratory of Geological Processes and Mineral Resources, and Center for Global Tectonics, School of Earth Sciences, Wuhan, China, (3)University of Maryland, Laboratory for Crustal Petrology, Department of Geology, College Park, MD, United States
Kyanite-Bearing Migmatites at Ledge Mountain, Adirondack Highlands (300665)
Mary Leech1, Brandon Swanson1 and Ellen P Metzger2, (1)San Francisco State University, San Francisco, CA, United States, (2)San Jose State Univ, San Jose, CA, United States

See more of: Volcanology, Geochemistry and Petrology