151 Chronology of Orogenesis: Unlocking the Timelines of Mountain Building (Posters)

The focus of this session is the use of geochronological methods (including but not limited to U-Pb, Ar/Ar, FT, (U/Th)-He) to establish the timing of key events in mountain building, including different orogenic phases, exhumation, and uplift rates.

Monday, 20 October 2025
8:00 AM - 5:30 PM
HBGCC, Hall 1

Participants

• Chair Isabella Muller
• Chair Madison Preece
• Chair Craig R. Martin

Presentations

• 8:00 AM
  Titanite Misorientation Records Deformation in Tuolumne Intrusive Suite, Sierra Nevada Batholith, CA
  Matthew Stein, Bowdoin College, Brunswick, ME and Claire Harrigan, Bowdoin College, Brunswick, ME
  412221 (Technical Sessions)
• 8:00 AM
  Multi-Method Geo- and Thermochronologic Constraints on the Timing of Deformation and Exhumation in the Shyok Suture Zone, Ladakh, India, NW Himalayas.
  Christina Bennett, University of Texas at Austin, Austin, TX and Craig Martin, University of Texas at Austin, Austin, Texas and Daniel Stockli, University of Texas at Austin, Austin, Texas
  412706 (Technical Sessions)
• 8:00 AM
  Constant 50 Ma Lu-Hf garnet ages across the 100 km Tso Morari complex indicate the exhumation of a coherent UHP thrust sheet
  Sajjad Shah, Boise State University, Department of Geosciences, Boise, ID and Matthew Kohn, Boise State University, Geosciences, Boise, ID and Sean Long, Washington State University, Pullman, WA and Adelie Ionescu, Washington State University, Pullman, WA and Jeff Vervoort, School of the Environment, Pullman, WA and Peter Baker, Washington State University, Pullman, WA and Himanshu Sachan, Wadia Institute of Himalayan Geology, Dehra Dun, Uttarakhand
  413095 (Technical Sessions)
• 8:00 AM
  U-Pb Geochronology of Syn-Kinematic Calcite from the Sawtooth Mountains, Montana – Implications for the Temporal and Kinematic History of the NW Montana Disturbed Belt
  Mitchell Casazza, Dept. of Earth and Planetary Sciences, University of Texas at Austin, Austin, TX and Daniel Stockli, Dept. of Earth and Planetary Sciences, University of Texas at Austin, Austin, TX and Lisa Stockli, University of Texas at Austin - Jackson School of Geosciences, Austin, TX and Peter Hennings, The University of Texas, Bureau of Economic Geology, Austin, TX
  414245 (Technical Sessions)
• 8:00 AM
  Apatite Fission Track Evidence for Exhumation of the Yukon-Tanana Upland during Eocene Oroclinal Bending, Interior Alaska
  Isabella Muller, The University of Texas at Austin, Austin, Texas and Richard Ketcham, The University of Texas at Austin, Austin, Texas and Robert Gillis, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska and Evan Twelker, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska
  414342 (Technical Sessions)