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Important Dates
20 April 2013:
Deadline for abstract submission

1 May 2013:
Release of Fourth Circular (Technical Program for meeting)

30 April 2013:
Deadline for field-trip sign-ups and discount registration fee

Roof of the World

Joint meeting of GSC and GSA

17–19 June 2013  •  Chengdu, China  •  Jinjiang Hotel, Chengdu, Sichuan Province

Special Sessions

Topic A  |  Topic B  |  Topic C  |  Home

Topic A: Evolution of the Qinghai-Tibet Plateau
A-1: Evolution of the Qinghai-Tibet Plateau
Conveners: SMITH Alan, NIEMI Nathan; MO Xuanxue (UGS-BJ), DING Lin (CAS)
Invited Speakers: COPLEY Alex, AVOUAC Jean-Philippe (Caltech), KLEMPERER Simon (Stanford); FREYMULLER Jeff (University of Alaska), KAPP Paul (UoA), XU Zhiqin (CAGS), WANG Chengshan (UGS-BJ), GAO Rui (CAGS)
The main focus of the session is to showcase the most recent advances in the studies of the Himalayan orogen and the Qinghai-Tibet plateau. Contributions from all aspects of Tibetan geology are welcome.
A-2: Continental Deformation and Deep Lithosphere Processes
Conveners: YIN An (UCLA), XU Zhiqin (CAGS), ZHANG Guowei (UNW)
Invited Speakers: DEPAOLO Don (UCB), KAPP Paul (UoA), MOLNAR Peter (University of Colorado), TAPPONNIER Paul, ALLMENDINGER Richard (Cornell University), FLESCH Lucy, BROWN Larry, DONG Shuwen (CAGS), ZHANG Peizhen (CEA)
The nature of deformation for continental lithosphere is one of the most fundamental problems of Earth Sciences. Asia has been a major testing ground in the past decades. This session intends to bring world-leading experts in studying intracontinental deformation to the meeting to discuss the current status of the problem.
A-3: Origin of ophiolites, podiform chromites, UHP minerals and tectonics
Conveners: YANG Jingsui, and ROBINSON Paul
Invited Speakers: DILEK Yildirim, YANG Jingsui (CAGS), JIN Zhenmin (UGS)
The discovery of in-situ diamonds, crustal minerals and highly reduced phases in chromitites of several ophiolites has many implications for the composition and processes and evolution of the upper mantle; podiform chromitites containing inclusions of diamonds and other minerals likely formed in, or near, the mantle transition zone, which is also the ‘graveyard’ for subducted continental crust. These finding require a complete reexamination of current models for the formation of ophiolites and podiform chromitites and the stability of crustal minerals in the upper mantle. They also raise fundamental questions regarding the magmatic processes and melt-rock reactions in supra-subduction zone environments.
A-4: Foreland basin tectonics and sedimentation (north of the Tibetan Plateau)
Conveners: KHANDAKER Nazrul I., JIA Chengzhao (CNPC), LI Haibing (CAGS)
Invited Speakers: BUSBY Cathy, DECELLES Peter, CAROLLEL Alan, HENDRIX Marc, FANG Xiaomin (CAS), WANG Erqi (CAS)
Foreland basins document active tectonism and provide significant constraints on depositional environments and resultant rock record. The Cenozoic geologic history of Tibet and surrounding regions is largely affected by complex plate-tectonic phenomena and many of these complex phenomena can be fingerprinted and explained by a combination of field, isotopic, and paleontological investigations. Geoscientists involved in field and simulation-based research are invited to submit papers for this session.
A-5: Deep Earth processes through geochemistry
Conveners: ZHANG Youxue, XU Yigang, ZHENG Jianping (UGA BJ)
Invited Speakers: RUDNICK R.L. (U Maryland), FEI Yingwei (Geophysical lab), ZHANG Hongfu (CAS)
Petrological and geochemical studies often shed light on deep Earth processes. For example, petrology and geochemistry of large igneous provinces and hotspots may reveal mantle signature from the core-mantle boundary, and petrology and geochemistry of ultra-high-pressure metamorphic rocks can provide information on subduction and exhumation. This session will focus on solid Earth geochemistry, including igneous and metamorphic petrology, experimental petrology, trace element and isotope geochemistry, and mineral physics, and their applications to understand deep (from crust to the core-mantle boundary) Earth processes.
A-6: Accretionary orogens and growth of the continental crust
Conveners: JAHN Bor-ming (NTU-Taipei), WINDLEY Brian (Leicester), SUN Min (HKU), WANG Tao (CAGS), WU Fuyuan (CAS) Invited speakers: ISOZAKI Yukio (Tokyo), XIAO Wenjiao (CAS-Geology/Geophysics), WILDE Simon (Perth), CHUNG Sun-Lin (NTU-Taipei), KUSKY Tim (CUGS-Wuhan), CHEN Bin (Beijing University), WANG Bo (Nanjing University)
Accretionary orogens are the major sites of crustal growth and mineral deposits throughout the history of the Earth. In Asia, in addition to the important crustal formation in Precambrian cratons, voluminous juvenile crust was also produced during the Phanerozoic in the accretionary orogens of Central Asia (Central Asian Orogenic Belt) and Western Pacific island arcs. The orogenic processes and styles of crustal formation in the Phanerozoic have been one of the hottest research themes in the past 15 years. This session provides a forum for synthesis of major findings and discussion on controversial ideas about accretionary orogens.

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