V032
Magmatism and continental crust evolution in collisional zones
Magmatism and continental crust evolution in collisional zones
Session ID#: 75561
Session Description:
The Earth’s continental crust is on average of andesitic composition and formed as a result of multiple processes in magmatic arcs. Continental collisional zones preserve a secular magmatic record during and after continental collision in addition to arc magmatism generated during subduction of oceanic plates. Collisional processes not only expose the deep roots of the old magmatic arcs but also cause reworking and recycling of these rocks in the form of new magmatism, resulting in the stabilization of the continental crust. Collisional zones are therefore ideal regions to understanding of the fundamental problem in Earth Sciences — how does the continental crust evolve from a mafic to andesitic average composition and become stable as the collisional process evolves? We invite a broad range of field, petrological, geochemical, experimental, geophysical, and modeling studies related to the magmatic processes and crustal evolution in collisional zones.
Index Terms:
1031 Subduction zone processes [GEOCHEMISTRY]
1037 Magma genesis and partial melting [GEOCHEMISTRY]
1115 Radioisotope geochronology [GEOCHRONOLOGY]
8104 Continental margins: convergent [TECTONOPHYSICS]
Primary Convener: Di-Cheng Zhu, China University of Geosciences Beijing (dchengzhu@163.com), Beijing, China
Conveners: Jingao Liu Prof, China University of Geosciences Beijing, Beijing, China, Rui Wang, State Key Laboratory of Geological Processes and Mineral Resources, School of Scientific Research, China University of Geosciences, Beijing 100083, China, Beijing, China and Roberto Ferrez Weinberg, Monash University, Melbourne, VIC, Australia
Primary Liaison: Di-Cheng Zhu, China University of Geosciences Beijing (dchengzhu@163.com), Beijing, China
See more of: Volcanology, Geochemistry and Petrology
