| 8:00 AM-6:00 PM, Colorado Convention Center: |
425. Laramide Paleoseismites of the Bighorn Basin
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| Primary Leader: Mervin J. Bartholomew |
| Leader(s): Kevin G. Stewart |
| Field Trip Description: Paleocene –Eocene faulting along the Beartooth fault in southern Montana and northern Wyoming and earlier faulting in Elk Basin generated numerous large earthquakes. The record of these earthquakes is spectacularly preserved as paleoseismites in synkinematic sediments within the adjacent Bighorn Basin. This field trip will focus on new work done by Bartholomew, Stewart and their graduate students on the nature and distribution of these paleoseismites and their relationship to the kinematic history of the Beartooth front. Field trip stops will include sites in the basin from Red Lodge, MT to near Clark, Wy. Most of the exposures are within the Paleocene Fort Union Formation and are easily accessible by vehicle and short hikes.
Day 1 of the trip will be driving from Denver to Red Lodge, Montana, where we will stay overnight. Days 2 and 3 will be spent examining paleoseismites in the Basin, returning to Red Lodge each night. Day 4 will be spent driving from Red Lodge, back to Denver. |
| Field Trip will span: 3 days |
| Sponsor(s): |