V001
Accretion of oceanic island arcs to continents: Mountain belt examples and modern analogues

Session ID#: 77265

Session Description:
Significant volumes of continental growth occur via the structural transfer of oceanic island arc crust to continental margins. A variety of tectonic scenarios can result in arc accretion to continents, i.e.- via a subduction zone dipping beneath the arc (e.g. Taiwan), beneath the continent (e.g. central Honshu, Kamchatka), or more complex pathways involving strike-slip faulting. Once an arc crustal block is accreted, tectonic overprinting can lead to further complexities that may be difficult to unravel.  This session aims to look broadly at a full spectrum of modern and ancient arc-continent collisions with a focus on the important tools needed to resolve details for their evolution.  We invite contributions that focus on such collisions from the micro- to the macro-scale.
Index Terms:

1031 Subduction zone processes [GEOCHEMISTRY]
1140 Thermochronology [GEOCHRONOLOGY]
8104 Continental margins: convergent [TECTONOPHYSICS]
8413 Subduction zone processes [VOLCANOLOGY]

Primary Convener:  Victoria Pease, Stockholm University, Stockholm, Sweden
Conveners:  Stephen E Box, US Geological Survey, Spokane, WA, United States and Peter Dominic Clift, Louisiana State University, Baton Rouge, LA, United States
Primary Liaison:  Stephen E Box, US Geological Survey, Spokane, WA, United States
 
IMPLICATIONS FOR LOWER JURASSIC ISLAND ARC MAGMATISM FROM IGNEOUS CLASTS IN THE EARLY CRETACEOUS CONGLOMERATE, NE YUKON-KOYUKUK BASIN, ALASKA (485344)
Charlotte Fredriksson, Stockholm University, Geological Sciences, Stockholm, Sweden and Victoria Pease, Stockholm University, Stockholm, Sweden
 
Modern analogue to the Cretaceous collision of the Alexander-Wrangellia-Peninsular terrane with northwestern North America: Ongoing collision of the Izu-Bonin-Marianas arc with central Japan (486822)
Stephen E Box1, Susan M Karl2, James V Jones III3, Dwight C Bradley4, Peter J Haeussler4 and Paul B O'Sullivan5, (1)US Geological Survey, Spokane, WA, United States, (2)USGS Alaska Science Center, Anchorage, AK, United States, (3)US Geological Survey, Anchorage, AK, United States, (4)USGS, Anchorage, AK, United States, (5)GeoSep Services, Moscow, ID, United States
 
Unraveling the timing and thermal evolution of Paleoproterozoic accretionary orogenies in the western São Francisco Craton: constraints from U-Pb-Hf and apatite FTT results (489797)
Airton Dias, Federal University of São Carlos - Campus Sorocaba, Sorocaba, SP, Brazil, Marco Antonio C Martins-Ferreira, Faculdade de Ciências e Tecnologia, UFG, Aparecida de Goiânia, Brazil, Vinicius de Queiros Pereira, Federal University of São Carlos, campus Sorocaba, Sorocaba, Brazil, Jose E Campos, UNB University of Brasilia, Geosciences Institute, Asa Norte, Brazil and Farid Chemale Jr, Universidade do Vale do Rio dos Sinos, Sao Leopoldo, Brazil
 
Evolution of a Neoproterozoic Island Arc: the Wadi Dabr Intrusive Complex, Egypt (500936)
Victoria Pease, Stockholm University, Stockholm, Sweden, Rasoul Benzenjani, Pars Olang Engineering Consultants, Tehran, Iran, Martin J Whitehouse, Swedish Museum of Natural History, Department of Geosciences, Stockholm, Sweden, Mahmoud Shalaby, Nuclear Material Authority, Cairo, Egypt and Emelie Axelsson, University of Stockholm, Stockhom, Sweden
 
Plio-Pleistocene Convergence and Tectonic Recycling at the Oceanward Retrowedge Margin of an Active Arc-Continent Collision, Eastern Taiwan (Invited) (503717)
Rebecca J Dorsey1, Larry Syu-Heng Lai1, Jiun-Yee Yen2, Mae Marcaida3, Lucas Mesalles4, Yuan-Hsi Lee5 and Marty Grove6, (1)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (2)National Dong Hwa University, Department of Natural Resources and Environmental Studies, Hualien County, Taiwan, (3)Stanford Earth Sciences, Stanford, CA, United States, (4)National Chung-Cheng University, Department of Earth and Environment Sciences, Chiayi, Taiwan, (5)Chung-Cheng University, Min-Hsiung Chia-Yi,, Taiwan, (6)Stanford University, Geological Sciences, Stanford, CA, United States
 
The Neogene Izu collision zone granitoid plutons, central Japan: transformation of juvenile Izu–Bonin–Mariana oceanic arc into mature continental crust (Invited) (515688)
Satoshi Saito, Ehime University, Matsuyama, Japan
 
Tuff Layers in the Fore-Arc Basin of South Coastal Range, Eastern Taiwan: Implications for Volcanic Activity and Evolution after the Arc-Continent Collision. (567353)
Huai-Yu Tang, Department of Geoscience, National Taiwan University, Taipei, Taiwan and Sheng-Rong Song, Department of Geosciences, National Taiwan University, Taipei, Taiwan
 
Using trace element geochemistry of magmatic zircon to fingerprint tectono-magmatic provenance of ophiolitic rocks in Taiwan (617325)
Mae Marcaida1, Yuan-Hsi Lee2, Lucas Mesalles2, Yu-Ming Lai3, Rebecca J Dorsey4, Larry Syu-Heng Lai4 and Marty Grove1, (1)Stanford University, Geological Sciences, Stanford, CA, United States, (2)National Chung-Cheng University, Department of Earth and Environment Sciences, Chiayi, Taiwan, (3)National Taiwan Normal University, Department of Earth Sciences, Taipei, Taiwan, (4)University of Oregon, Department of Earth Sciences, Eugene, OR, United States
 
Implications for Mesozoic Arc Accretion in Arctic Alaska from Detrital Zircon U-Pb and Hf Isotopic Analysis of Early Cretaceous Sediment of the Yukon-Koyukuk Basin, Alaska (630258)
Stephen Pearcey and Elizabeth L Miller, Stanford University, Stanford, CA, United States
See more of: Volcanology, Geochemistry and Petrology
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