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22–25 SEPTEMBER  PHOENIX, ARIZONA, USA

T72. Subduction-Related Deformation Disciplines: Structural Geology, Geochronology, Petrology,
Cosponsor: GSA Structural Geology and Tectonics Division Metamorphic
Disciplines: Structural Geology, Tectonics/Tectonophysics, Advocates: Amy C. Moser; Tarryn Cawood; Calvin A. Mako
Geophysics/Geodynamics We encourage contributions that develop or apply novel tech-
Advocates: Juliet G. Crider; John Wakabayashi niques to directly date or bracket the timing of mid- to lower-
Subduction deforms the lithosphere in the subducting slab, crustal deformation and abstracts that constrain the duration,
accretionary wedge, forearc, arc, and backarc. We encourage rates, and evolution of high-temperature deformation.
contributions regarding structural, geomorphic, and geophysical
observations of lithospheric deformation in subduction settings, T77. From Oceanic Subduction to Inter-
on- or off-shore, ancient or active. Continental Collision: Examples of Convergent
Margin Processes in Non-Collisional and
T73. Structural Geology in the 21st Collisional Settings
Century: Rheology of Naturally Deformed Rocks Cosponsor: GSA Structural Geology and Tectonics Division
Cosponsor: GSA Structural Geology and Tectonics Division Disciplines: Structural Geology, Tectonics/Tectonophysics,
Disciplines: Structural Geology, Tectonics/Tectonophysics, Petrology, Metamorphic
Geophysics/Geodynamics Advocates: Michael H. Taylor; Paul A. Kapp; Michael Murphy
Advocates: Basil Tikoff; Whitney M. Behr Convergent margins encompass many of Earth’s plate bound-
The rheology of naturally deformed rocks exhibits wide tem- aries. We suggest that collisional margins such as the
poral and spatial variations. We seek contributions that address Himalayan-Tibetan orogen can shed light on processes acting
any aspect of rock rheology from any tectonic setting, or studies during the transition from Andean-style subduction to inter-
that combine experimental and natural samples. continental collision.

T74. Structural Geology and T78. Folding: Processes, Observations,
Geomechanics in Applied Geosciences and Consequences
Cosponsors: GSA Structural Geology and Tectonics Division; Cosponsor: GSA Structural Geology and Tectonics Division
GSA Energy Geology Division; GSA Environmental & Engineering Disciplines: Structural Geology, Tectonics/Tectonophysics
Geology Division; American Association of Petroleum Geologists Advocates: Caroline M. Burberry; Amanda Hughes; Andreas
Structural Geology and Geomechanics Division Eckert
Disciplines: Structural Geology, Energy Geology, Engineering We encourage contributions investigating the processes of
Geology folding on multiple scales. We seek contributions from field,
Advocates: J. Steve Davis; Kellen Gunderson; Andreas Eckert; analytical, and modeling studies investigating causes and conse-
Amanda Hughes quences of folding in the contexts of tectonic history, crustal
This session highlights structural geology and geomechanics deformation, rheology, landscape evolution, or fluid migration.
research and applications in energy, mining, geological
engineering, and environmental geology. Applications of T79. Combining Analog and Numerical
structural analysis, computational kinematic and dynamic Modeling Approaches to Understand the World
deformation modeling, geomechanics, and fracture and fault around Us (Posters)
characterization are encouraged. Disciplines: Structural Geology, Tectonics/Tectonophysics
Advocates: Caroline M. Burberry; Eunseo Choi
T75. Large-Volume Pluton Emplacement This session will showcase analog and numerical modeling
Processes within Fold-and-Thrust Belts: experiments that seek to leverage knowledge gained by working
Testing Models with New Perspectives in tandem to model earth processes on a variety of scales.
Disciplines: Structural Geology, Tectonics/Tectonophysics,
Petrology, Igneous T80. Best Student Geologic Mapping
Advocates: David Lageson; Andrew Laskowski Competition (Posters)
How are plutons emplaced into continental crust that is under- Cosponsors: Association of American State Geologists; U.S.
going tectonic shortening? Do they result in crustal growth or Geological Survey–National Cooperative Geologic Mapping
material transfer? This session highlights research on these Program; Geological Society of America; GSA Foundation;
broad topics from broad perspectives. American Geosciences Institute; American Institute of
Professional Geologists; Journal of Maps
T76. How Old, How Long, and How Fast: Disciplines: Structural Geology, Stratigraphy, Geomorphology
Establishing the Timing, Duration, and Rates of Advocates: Darcy K. McPhee; Michael Marketti
Mid- to Lower-Crustal Deformation Students will present their research through geologic map-
Cosponsors: GSA Structural Geology and Tectonics Division; ping projects that have a significant field component that
GSA Geochronology Division; GSA Mineralogy, Geochemistry, addresses scientific or societal issues. The top three geologic
Petrology, and Volcanology Division maps will be awarded.

www.geosociety.org/AnnualMeeting 27