Please see below for sessions of interest to the GeoPRISMS community that will take place at the 2014 GSA Annual Meeting, October 18-22, 2014, in Vancouver, B.C.
Abstracts deadline is Tuesday, 29 July, 2014
Meeting information:
http://community.geosociety.org/gsa2014/home/
http://community.geosociety.org/gsa2014/science/sessions
(1)T25 Megathrusts – 50 years after the 1964 Great Alaska Earthquake – a session in honor of George Plafker
(2)T5. Tectonic and Magmatic Evolution of the Aleutian Arc in Space and Time
(3)T7. Great Earthquakes, the Cascadia Subduction Zone, and Society
(4)T122. Magmatism and Geodynamics within the Cascadia Subduction Zone
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(1)T25. Megathrusts – 50 years after the 1964 Great Alaska Earthquake – a session in honor of George Plafker
If you are working on the history, processes or source structure of great subduction earthquakes, we invite you to consider submitting an abstract to the Megathrusts session, in honor of George Plafker, at the Geological Society of America Annual Meeting October 18-22, 2014. The meeting will be in beautiful Vancouver, BC and promises to be exciting, with over 250 proposed sessions and two dozen proposed field trips.
Session Description
During the 50th anniversary year of the M 9.2 Great Alaska Earthquake, we will examine advances in coastal geology, paleoseismology, geodetic monitoring, seismology, and geophysical surveys that illuminate, history, processes and source structure of great subduction earthquakes.
Rationale
The M 9.2 Great Alaska Earthquake of 1964 is the second largest earthquake ever recorded. The earthquake and resulting tsunami caused damage throughout the Pacific Basin. The timely work of George Plafker and his colleagues, in documenting permanent ground deformation, surface faulting, and widespread shaking effects, demonstrated that the source was a shallow, landward dipping thrust, and changed the way we view convergent margin tectonics. Recent great earthquakes in Japan, Sumatra, and Chile are a reminder that the subduction zone megathrusts of the Aleutian-Alaskan arc, Cascadia, and Mexico/Central America are America’s largest earthquake sources, with potential for long-range damage. Advances in coastal geology, paleoseismology, geodetic monitoring, seismology, and marine geology and geophysics have improved our understanding of the subduction zone earthquake cycle and its geologic record, but many questions remain. We seek contributions that will highlight the recent advances in earthquake science and hazard assessment of our North American and other subduction zones.
Session Chairs
Ray Wells rwells@usgs.gov
Peter Haeussler pheuslr@usgs.gov
Kelin Wang kelin.wang@nrcan-rncan.gc.ca
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Ray E. Wells
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(2)T5. Tectonic and Magmatic Evolution of the Aleutian Arc in Space and Time
Session Description
The Aleutian arc is arguably the best place on Earth to investigate several fundamental questions about arc magmatism and tectonism. We seek contributions that highlight the geochemical, geophysical, and temporal evolution of this dynamic setting.
Invited speakers
Gene Yogodzinski, Univ. of South Carolina
Dave Scholl, USGS/Univ. Alaska-Fairbanks
Session Chairs
Brian R. Jicha, Suzanne Mahlburg Kay
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(3)T7. Great Earthquakes, the Cascadia Subduction Zone, and Society
Dear Colleague,
We write to consider submitting an abstract for our Theme Session “T7: Great Earthquakes, the Cascadia Subduction Zone, and Society”, which will take place in Vancouver, BC this fall at the 2014 Annual Meeting of the Geological Society of America.
The Cascadia subduction zone is arguably one of the biggest seismic hazards in North America, yet it has not been the site of a great subduction zone earthquake since 26 January 1700. Probing of Cascadia’s earthquake history and potential and recent great earthquakes in Indonesia, Chile, and Japan have led to tremendous new advances in characterization of the seismic hazard associated with subduction zone earthquakes. This session will explore advances in our understanding subduction zone dynamics and earthquake recurrence, modes of fault behavior, tsunami hazard, and the scale of exposure of society to the hazards.
This poster session is a companion session to a Pardee Symposium of the same name. The Pardee Session consists of a slate of invited speakers and is an all-day session on Tuesday, 21 October 2014.
Session Description
The Cascadia subduction zone is arguably one of the biggest seismic hazards in North America. This session explores new advances in subduction zone dynamics, earthquake recurrence, tsunami hazards, and societal exposure.
Session Chairs
Andrew Meigs, Chris Goldfinger
Speakers include:
Thorne Lay (UC Santa Cruz); Chris Scholz (Columbia University and Lamont-Doherty Observatory); Roy Hyndman (Pacific Geoscience Center, Geological Survey of Canada); Kelin Wang (Pacific Geoscience Center, Geological Survey of Canada); Patricia McCrory (U.S.G.S., Menlo Park); George Priest (Oregon Department of Geology and Mineral Industries); Chris Goldfinger (Oregon State University); Rob Witter (U.S.G.S., Anchorage); Kit Miyamoto (Miyamoto International); Art Frankel (U.S.G.S., Seattle); Robert Losey (University of Alberta), Micah McCarty (Evergreen State College and Makah Tribe), Kent Yu (SEFT, Chairman Oregon Resilience Plan), Mark Miller (Great Pacific TV), Rob McCaffrey (Portland State University), and Carlos Ventura (University of British Columbia).
We hope you participate and see you in October.
Andrew Meigs and Chris Goldfinger
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(4)T122. Magmatism and Geodynamics within the Cascadia Subduction Zone
Session Description
This session promotes an interdisciplinary approach to understanding the links between lithospheric plate dynamics, slab metamorphism and dehydration, melt generation, and magmatism within the Cascadia subduction margin since its inception about 40 million years ago.
Session Chairs
S.M. DeBari, Patricia A. McCrory, A.J. Calvert, Nathalie Vigouroux