MR008
Constitutive Behavior of Earth and Planetary Materials during Rapid Deformation
Session ID#: 75888
Session Description:
Earth and planetary materials such as rocks, minerals, and ice deform during natural processes at strain rates covering twenty orders of magnitude, from very slow (e.g., creep, ~10-15 – 106 s-1) to very fast (meteorite impact, >105 s-1). Geological processes associated with rapid strain rates, such as earthquake rupture, bolide impact, volcanic eruption and collapse, and long-runout landslides, involve impulsive stresses and temperature changes that exert fundamental controls on deformation mechanisms and corresponding constitutive responses of Earth and planetary materials. Due to complicated physics and experimental conditions, material behavior in the extremes of this strain rate spectrum is generally poorly-constrained and represented with highly idealized constitutive laws in numerical models. We invite contributions using field, experimental, and theoretical approaches that explore geomaterial response to impulsive temperature and/or stress conditions, particularly rock friction, bulk brittle and ductile deformation, and the role of this response in natural deformation processes.
Index Terms:
3944 Shock wave experiments [MINERAL PHYSICS]
4313 Extreme events [NATURAL HAZARDS]
7209 Earthquake dynamics [SEISMOLOGY]
8159 Rheology: crust and lithosphere [TECTONOPHYSICS]
Primary Convener: W. Ashley Griffith, Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States
Conveners: Thomas M Mitchell, University College London, Department of Earth Sciences, London, United Kingdom, Henry Melosh, Purdue University, West Lafayette, IN, United States and Ares Rosakis, California Institute of Technology, Graduate Aerospace Laboratories, Pasadena, CA, United States
Primary Liaison: W. Ashley Griffith, Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States
Long Runout Landslides: Morphological Features and Internal Structures of the Final Deposit as Keys to Understand Mechanisms Involved During Emplacement. (488494)
Giulia Magnarini1, Thomas M Mitchell1, Peter M Grindrod2 and Liran Goren3, (1)University College London, Department of Earth Sciences, London, United Kingdom, (2)Natural History Museum, London, United Kingdom, (3)Ben Gurion University of the Negev, Department of Geological and Environmental Sciences, Beer-Sheva, Israel
Insights into rock deformation from observations of the Chicxulub impact crater: Impact bulking, role of cohesion, and contrasts with tectonic plate boundary faults (Invited) (492807)
Sean P S Gulick1, Ulrich Peter Riller2, Auriol Rae3, Joanna V Morgan4, Michael Poelchau3, Naoma McCall1, Gail Lynn Christeson5 and Gareth S Collins6, (1)The University of Texas at Austin, Institute for Geophysics & Department of Geological Sciences, Austin, TX, United States, (2)Geologisch-Pal. Institut, Hamburg, Germany, (3)University of Freiburg, Freiberg, Germany, (4)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (5)UTIG, Austin, TX, United States, (6)Imperial College London, London, United Kingdom
Temperature and stress distribution on flash heated contacts in granite at seismic slip rates (512971)
Monica R Barbery1, Frederick M Chester2 and Judith Savaso Chester2, (1)Texas A&M University College Station, Center for Tectonophysics and the Department of Geology and Geophysics, College Station, TX, United States, (2)Texas A & M University, Center for Tectonophysics and the Department of Geology and Geophysics, College Station, TX, United States
Direct Evidence for Thermal Pressurization in Experimental Faults (553450)
Nir Badt1, Terry E Tullis1 and Greg Hirth2, (1)Brown University, DEEPS, Providence, RI, United States, (2)Brown Univeristy, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States
X-ray Diffraction of Shock-Compressed Gibeon Meteorite to 136 GPa (606442)
Sabrina Tecklenburg1, Arianna E Gleason2, Cynthia Bolme3, Dylan Rittman4, Sebastien Merkel5, Kyle James Ramos3, Benjamin Morrow3, Timothy Pierce3, Hae Ja Lee6, Bob Nagler6, Eric Galtier6, Eduardo Granados6, Akel Hashim7 and Wendy L Mao8, (1)Stanford Earth Sciences, Stanford, CA, United States, (2)Stanford University, Stanford, CA, United States, (3)Los Alamos National Laboratory, Los Alamos, NM, United States, (4)Stanford University, Geological Sciences, Palo Alto, CA, United States, (5)Université de Lille, Villeneuve d'Ascq, France, (6)SLAC National Accelerator Laboratory, Menlo Park, CA, United States, (7)University of California Berkeley, Berkeley, CA, United States, (8)Stanford-Geological & Env Sci, Stanford, CA, United States
Dynamic Deformation of Catastrophic Long Run-Out Gravity Slides: Examples from the Cenozoic Marysvale Volcanic Field Gravity-Slide Complex, Southwest Utah (611928)
David B. Hacker, Kent State University Kent Campus, Kent, OH, United States, Robert F. Biek, Utah Geological Survey, Salt Lake City, UT, United States and Peter D Rowley, Geologic Mapping Inc., New Harmony, UT, United States
