[CEUS-earthquake-hazards] Session on Evidence for Neotectonic Earthquakes and Their Driving Mechanisms in the Intraplate Region of Central and Eastern North America at 2016 GSA Annual Meeting

[Horton, J. Wright]

Subject: Session on Evidence for Neotectonic Earthquakes and Their Driving
Mechanisms in the Intraplate Region of Central and Eastern North America at
2016 GSA Annual Meeting



Dear colleagues:


We encourage those of you conducting related research to submit an abstract
for *Topical Session T218. Evidence for Neotectonic Earthquakes and Their
Driving Mechanisms in the Intraplate Region of Central and Eastern North
America* at the Geological Society of America (GSA) Annual Meeting, 25-28
September 2016, in Denver, Colorado. The session will include invited
keynote talks by Martin Chapman (Virginia Tech), Vedran Lekic (University
of Maryland), and Lara Wagner (DTM, Carnegie Institution of Washington). It
is sponsored by four GSA Divisions (Structural Geology and Tectonics,
Geophysics, Environmental and Engineering Geology, Quaternary Geology and
Geomorphology), EarthScope, and the U.S. Geological Survey. Depending on
the number of abstracts submitted, a parallel poster session in addition to
the oral session may be included.


Rationale: The processes leading to intraplate earthquakes and zones of
historical seismicity in central and eastern North America are poorly
understood because earthquake rates are relatively low, surface expression
can be subtle to non-existent, and active faults can be hidden beneath the
surface or episodic in behavior. Yet the region has major population
centers in moderate to high seismic hazard regions with infrastructure that
was not built to withstand significant earthquakes. Events such as the 2011
Virginia earthquake, data from EarthScope and GeoPRISMS, paleoseismic
studies, and modeling may provide evidence for neotectonic earthquakes and
their driving mechanisms in relation to crustal structure. New results from
EarthScope Flexible Array experiments in the region are revealing the
presence of large velocity anomalies in the upper mantle that may be linked
to earthquake occurrence. We welcome contributions in any geoscience
discipline, including but not limited to seismology, structural geology and
tectonics, geomorphology, geodynamics, paleoseismology, geochronology,
geophysical imaging, and numerical modeling, that contribute new evidence
for earthquakes, refine or improve existing earthquake histories, evaluate
the potential for reactivation of ancient faults, or provide new models
explaining earthquake causal mechanisms.



Information on the Annual Meeting is at
http://community.geosociety.org/gsa2016/home , and the abstract submission
form can be found at
http://www.geosociety.org/meetings/2016/sessions/topical.asp . The abstract
deadline is 12 July. You may submit up to two volunteered abstracts as a
presenting author for the Annual Meeting if one of these abstracts is for a
poster presentation. If you are interested in submitting an abstract for
this session, we would appreciate your letting us know in advance. Please
forward this e-mail to anyone who may be interested.


We hope to see you in Denver!

Wright, Chris, and Rob

J. Wright Horton, Jr., U.S. Geological Survey, 926A National Center,
Reston, VA 20192, USA, whorton at usgs.gov



Christine A. Powell, Center for Earthquake Information and Research,
University of Memphis, 3890 Central Avenue, Memphis, TN 38152, USA,
capowell at memphis.edu



Robert A. Williams, U.S. Geological Survey, Geologic Hazards Science
Center, 1711 Illinois Street, Golden, CO 80401, USA, rawilliams at usgs.gov
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