V024
Processes in the crustal column: From magma genesis to ore deposits and eruptions
Session ID#: 247336
Session Description:
Igneous and associated metamorphic processes control the production and refinement of the continental and oceanic crust. The differentiation of those magmas often leads to the development of economically critical ore deposits and hazardous events, such as volcanic and seismic activity. Yet, additional chemical and physical constraints are needed to better document how, when and where magma differentiates, interacts with the surrounding crust, and erupts in various tectonic settings. We invite contributions on crustal processes including, but not limited to, (1) the crystallization-differentiation of hydrous and anhydrous magmas, (2) the associated deformation and metamorphism of the pre-existing crust during magmatic activity, and (3) the impact of volatile elements on melt differentiation, formation of ore deposits at the magmatic-hydrothermal transition, and volcanic eruptions. We welcome submissions from a broad selection of methods, such as microanalysis, experimental petrology, (isotope) geochemistry, and numerical/thermodynamic modeling, to communicate recent developments on high-temperature processes in the crust.
Index Terms:
3613 Subduction zone processes [MINERALOGY AND PETROLOGY]
3614 Mid-oceanic ridge processes [MINERALOGY AND PETROLOGY]
3640 Igneous petrology [MINERALOGY AND PETROLOGY]
3665 Mineral occurrences and deposits [MINERALOGY AND PETROLOGY]
Primary Convener: Manuel Pimenta Silva, Woods Hole Oceanographic Institution, Woods Hole, United States
Conveners: Thomas Grocolas, U.S. Geological Survey, Volcano Science Center, Moffett Field, United States, Juliet Ryan-Davis, California Institute of Technology, Pasadena, United States and Mattia Pistone, University of Georgia, Athens, United States
Contributions of metasomatized lithosphere or asthenosphere to the formation of magmatic Ni-Cu-PGE deposits: Evidence from the Norilsk 1 deposit (1845738)
Aleksandr Marfin1, Matthew Brzozowski2, Peter Lightfoot3, Xin Ding4, Michael Bizimis5, Shelby Rader6, Molly Karnes7, Valeriya Brovchenko8, Tatyana Radomskaya9, Alexei Ivanov10 and Olga Belozerova9, (1)Indiana University Bloomington, Bloomington, IN, United States, (2)Chang'an University, Xi'an, China, (3)University of Western Ontario, Ontario, Canada, (4)University of Science and Technology of China, Hefei, China, (5)University of South Carolina, School of Earth-Ocean-Environment, Columbia, United States, (6)Indiana University Bloomington, Department of Earth and Atmospheric Sciences, Bloomington, IN, United States, (7)Indiana University Bloomington, Department of Earth and Atmospheric Sciences, Bloomington, United States, (8)Institute of Geology of Ore Deposits Mineralogy, Petrography, and Geochemistry, Moscow, Russia, (9)Vinogradov Institute of Geochemistry SB RAS, Irkutsk, Russia, (10)Institute of the Earth’s Crust SB RAS, Irkutsk, Russia
Assessing halogen behavior within mature continental arc systems: A case study from the Cretaceous Sierra Nevada arc, CA (Invited) (1880907)
Emily HG H. G. Cooperdock1, Jaime Barnes2, César Bucheli3, Jade Star Lackey4, George Segee-Wright5,6, Justine G Grabiec7, Lisa Stockli2 and Daniel F Stockli2, (1)Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, United States, (2)University of Texas at Austin, Department of Earth and Planetary Sciences, Austin, United States, (3)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States, (4)Pomona College, Claremont, United States, (5)University of Texas at Austin, Austin, United States, (6)CPRG U. Lorraine, Lorraine, France, (7)University of Southern California, Earth Sciences, Los Angeles, CA, United States
An experimental study of the solubility of S-CO2-H2O in dacite melt at 100-200 MPa: Investigating the links between the petrology and gas-emission geochemistry of the 2009 eruption of Redoubt Volcano, Alaska (Invited) (Invited) (1901786)
Daniel Coulthard Jr1, Thomas W Sisson2 and Dawnika L Blatter2, (1)Colorado State University, Geosciences, Fort Collins, United States, (2)USGS California Volcano Observatory, Menlo Park, CA, United States
Magmatic fractionation and volatile enrichment in granitic systems: A pathway to economically viable Rare Earth Element and Critical Mineral Deposits (1916413)
Jonas Didero Takodjou Wambo, Lamar University, Department of Earth and Space Sciences, Beaumont, TX, United States, Sylvestre Ganno, University of Yaounde I, Department of Earth Sciences, Yaounde, Cameroon, Terence Kumbong Chiandeh, University of Yaoundé I, Earth science Dept, Yaoundé, Cameroon, Jean Paul Nzenti, University of Yaoundé I, Earth science Dept, Yaounde, Cameroon and Paul D Asimow, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States
Evolution of Magmatic Sulfides in Arc Lower Crust: Insights from Copper Isotopes (1991143)
Luan Jean Heywood1, Michelle Muth1, Liu Shengao2, Hongli Yang2 and George W Bergantz1, (1)University of Washington, Seattle, United States, (2)China University of Geosciences Beijing, State Key Laboratory of Geological Processes and Mineral Resources, Beijing, China
