Gordon Research Conferences
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Conference Program
 
Rock Deformation
Real-Time Rheology
August 3-8, 2008
Tilton School
Tilton, NH
Chair:
Greg Hirth

Vice Chair:
David J. Prior

The GRC on Rock Deformation highlights the latest research in brittle and ductile rock mechanics from experimental, field and theoretical perspectives. The conference promotes a multi-disciplinary forum for assessing our understanding of rock strength and related physical properties in the Earth. The theme for the 2008 conference is "Real-time Rheology". Using ever-improving geophysical techniques, our ability to constrain the rheological behavior during earthquakes and post-seismic creep has improved significantly. Such data are used to investigate the frictional behavior of faults, processes responsible for strain localization, the viscosity of the lower crust, and viscous coupling between the crust and mantle. Seismological data also provide information on the rheology of the lower crust and mantle through analysis of seismic attenuation and anisotropy. Geologists are improving our understanding of rheology by combining novel analyses of microstructures in naturally deformed rocks with petrologic data. This conference will bring together experts and students in these research areas with experimentalists and theoreticians studying the same processes. We will discuss and assess where agreement exists on rheological constraints derived at different length/time scales using different techniques - and where new insight is required. To encompass the elements of these topics, speakers and discussion leaders with backgrounds in geodesy, experimental rock deformation, structural geology, earthquake seismology, geodynamics, glaciology, materials science, and mineral physics will be invited to the conference. Thematic sessions will be organized on the dynamics of earthquake rupture, the rheology of the lower crust and coupling with the upper mantle, the measurement and interpretation of seismic attenuation and anisotropy, the dynamics of ice sheets and the coupling of reactive porous flow and brittle deformation for understanding geothermal and chemical properties of the shallow crust that are important for developing ideas in CO2 sequestration, geothermal and petrochemical research and the mechanics of shallow faults.


SUNDAY
2:00 pm - 11:00 pmArrival and Check-in
6:00 pmDinner
7:30 pm - 7:40 pmWelcome / Introductory Comments by GRC Site Staff
7:40 pm - 9:30 pmEARTHQUAKES AND THE RHEOLOGY OF THE LITHOSPHERE
Discussion Leader: Terry Tullis (Brown University)
7:40 pm - 8:20 pm Susan Owen (Jet Propulsion Laboratory)
"Geodetic constraints on lithosphere deformation and fault mechanics"
8:20 pm - 8:35 pm Discussion
8:35 pm - 9:15 pm Greg Beroza (Stanford University)
"Constraints from Seismology on the Deep Roots of Faulting"
9:15 pm - 9:30 pm Discussion
MONDAY
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmRHEOLOGICAL PROPERTIES OF FAULTS DURING EARTHQUAKES
Discussion Leader: Tom Heaton (Caltech)
9:00 am - 9:40 am Nick Beeler (U.S. Geological Survey)
"Lab-inferred properties of seismic faults and their expression in seismological and geophysical data"
9:40 am - 10:00 am Discussion
10:00 am Coffee Break / Group Photo
10:30 am - 11:10 am Judi Chester (Texas A&M University)
"Geologic perspective on earthquake rupture from field and laboratory studies"
11:10 am - 11:30 am Discussion
11:30 am - 12:10 pm Yehuda Ben-Zion (University of Southern CA)
"Collective Behavior of Earthquakes and Faults"
12:10 pm - 12:30 pm Discussion
12:30 pmLunch
1:30 pm - 6:00 pmFree Time
6:00 pmDinner
7:30 pm - 9:30 pmPOSTER SESSION 1
Discussion Leader: Dave Prior (University of Liverpool)
TUESDAY
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmDEFORMATION OF ICE SHEETS AND GLACIERS
Discussion Leader: Erland Schulson (Dartmouth College)
9:00 am - 9:40 am David Goldsby (Brown University)
"Creep of Glaciers and Ice Sheets"
9:40 am - 10:00 am Discussion
10:00 am Coffee Break
10:30 am - 11:10 am Neal Iverson (Iowa State University)
"Viscous and frictional deformation resistance at glacier beds"
11:10 am - 11:30 am Discussion
11:30 am - 12:10 pm Sridhar Anandakrishnan (Pennsylvania State University)
"Slip Slidin' Away: Slow Slip Events (SSE) on the ice streams of West Antarctica"
12:10 pm - 12:30 pm Discussion
12:30 pmLunch
1:30 pm - 6:00 pmFree Time
6:00 pmDinner
7:30 pm - 9:30 pmSEISMIC ATTENUATION AND RHEOLOGY OF THE UPPER MANTLE
Discussion Leader: Doug Wiens (Washington University)
7:30 pm - 8:10 pm Marshall Sundberg (Brown University)
"Experimental Constraints on Attenuation in Peridotite: Physical Processes and Implications for Seismology and Rheology"
8:10 pm - 8:30 pm Discussion
8:30 pm - 9:10 pm Colleen Dalton (Boston University)
"Seismic Constraints on Upper-Mantle Attenuation"
9:10 pm - 9:30 pm Discussion
WEDNESDAY
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmDEFORMATION AND RHEOLOGY OF THE LOWER CONTINENTAL CRUST
Discussion Leader: Brendan Meade (Harvard University)
9:00 am - 9:40 am Georg Dresen (GeoForschungsZentrum Potsdam)
"Rheology of the Lower Crust-A Lab and Field Perspective"
9:40 am - 10:00 am Discussion
10:00 am Coffee Break
10:30 am - 11:10 am Roland Burgmann (Univ. of California, Berkeley)
"Space Geodetic Probing of Lower Crustal Rheology"
11:10 am - 11:30 am Discussion
11:30 am - 12:10 pm Alex Copley (Cambridge University)
"Using large-scale active deformation to infer crustal rheology"
12:10 pm - 12:30 pm Discussion
12:30 pmLunch
1:30 pm - 6:00 pmFree Time
6:00 pmDinner
7:30 pm - 9:30 pmPOSTER SESSION 2
Discussion Leader: Dave Prior (University of Liverpool)
THURSDAY
7:30 am - 8:30 amBreakfast
8:30 am - 9:00 amBusiness Meeting
(Nominations for the next Vice Chair; Fill out Conference Evaluation Forms; Discuss future Site & Scheduling preferences; Election of the next Vice Chair)
9:00 am - 12:30 pmLINKING MANTLE ANISOTROPY AND RHEOLOGY
Discussion Leader: Neil Ribe (IPG Paris)
9:00 am - 9:40 am Martyn Drury (Utrecht University)
"Anisotropy and rheology of upper mantle rocks"
9:40 am - 10:00 am Discussion
10:00 am Coffee Break
10:30 am - 11:10 am Donna Blackman (IGPP, Scripps Institution of Oceanography)
"Tracking deformation of mantle minerals during regional mantle flow and insights available from seismic anisotropy"
11:10 am - 11:30 am Discussion
11:30 am - 12:10 pm Einat Lev (MIT)
"Anisotropic viscosity in geodynamical flow models"
12:10 pm - 12:30 pm Discussion
12:30 pmLunch
1:30 pm - 6:00 pmFree Time
6:00 pmDinner
7:30 pm - 9:30 pmLOOKING FORWARD: FUTURE DIRECTIONS IN LINKING RHEOLOGY AND REACTIVE POROUS FLOW
Discussion Leader: Wenlu Zhu (University of Maryland)
7:30 pm - 8:10 pm Steven Karner (ExxonMobil)
"Coupled thermo-hydro-chemo-mechanical processes in crustal rocks: Future directions for applied research involving real-time rheologic constraints"
8:10 pm - 8:30 pm Discussion
8:30 pm - 9:10 pm Peter Kelemen (Lamont-Doherty Earth Observatory)
"Chemical and physical feedback mechanisms during alteration of peridotite and the potential for enhanced, natural CO2 sequestration in tectonically exposed mantle"
9:10 pm - 9:30 pm Discussion
FRIDAY
7:30 am - 8:30 amBreakfast
9:00 amDepart

 
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