206 Strain and Displacement: Patterns, Gradients, Partitioning, and Reconstructions

This session aims to bring together researchers from structure-related disciplines to facilitate discussions of approaches that inform our understanding of strain and displacement. We welcome contributions from observations, experiments, theory, and modeling that characterize deformation from micro to tectonic scales.

Tuesday, 21 October 2025
1:30 PM - 5:30 PM
HBGCC, 217C

Participants

• Chair Sarah Trevino
• Chair Basil Tikoff

Presentations

• 1:30 PM
  Some important microstructural processes in quartz that facilitate strain
  Scott Johnson, University of Maine, Orono, ME and Won Joon Song, University of Maine, Orono, ME
  413351 (Technical Sessions)
• 1:50 PM
  Crystallographic preferred orientation in quartz within brittle cataclastic rocks of the Iron Mountain fault, southwest Virginia
  Jamie Levine, Appalachian State University, Boone, NC and Gabriele Casale, Appalachian State University, Boone, NC and Gerald Tripp, Appalachan State University, Angier, NC and Arthur Merschat, USGS, Zionville, NC
  413038 (Technical Sessions)
• 2:05 PM
  Determining vorticity history through coupled U-Pb titanite dating and crystallographic vorticity analysis
  Sarah Trevino, University of Wisconsin Madison, Madison, WI and Zachary Michels, The Mayo Clinic, Rochester, MN and Claire Harrigan, Bowdoin College, Brunswick, ME and Basil Tikoff, University of Wisconsin - Madison, Madison, WISCONSIN and Mark Schmitz, Boise State University, Boise, ID
  414530 (Technical Sessions)
• 2:20 PM
  Superplasticity in Amphibole and its Implications for the Rheology of the Lower Crust
  Elena Miranda, California State University Northridge, Northridge, CA and Joshua Schwartz, California State University Northridge, Northridge, CA and Keith Klepeis, University of Vermont, Burlington, VT and Gillian Rhea, California State University Northridge, Northridge, CA
  414442 (Technical Sessions)
• 2:55 PM
  Linking long-term Denali fault displacement gradients with curvature of the southern Alaska margin
  Trevor Waldien, South Dakota School of Mines and Technology, Rapid City, SD and Sean Regan, Geophysical Institute-University of Alaska Fairbanks, Fairbanks, AK
  414174 (Technical Sessions)
• 3:10 PM
  The SANGRE TAPHROGENY: Neogene/Quaternary Stress Distribution and Kinematics of the Clockwise Rotation of the Colorado Plateau Microplate
  Vince Matthews, Leadville Geology, LLC, Eleva, WI and STEVE CUMELLA, N/A Retired, OURAY, CO
  412922 (Technical Sessions)
• 3:25 PM
  Rotation of crustal extension and narrowing of rift faulting in the southern Rio Grande rift, Trans-Pecos Texas
  Jason Ricketts, The University of Texas at El Paso, El Paso, TX and Jesse Kelsch, Sull Ross State University, Alpine, TX and Georgina Rodriguez-Gonzalez, The University of Texas at El Paso, El Paso, TX and Lin Ma, University of Texas at El Paso, El Paso, TX and Patricia Dickerson, American Geological Institute, Austin, TX
  413052 (Technical Sessions)
• 3:40 PM
  Comparing strain rates in an exposed plate-boundary shear zone to plate tectonic displacement rates during high-magnitude extensional deformation
  Basil Tikoff, University of Wisconsin - Madison, Madison, Wisconsin and Julie Newman, Texas A&M University, College Station, TX and Vasileios Chatzaras, University of Sydney, Sydney
  412639 (Technical Sessions)