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Yellowstone geology trip
BYU petrology/volcanology class 2006
The focus of this brief Yellowstone blitzkrieg was pyroclastic deposits. We were especially lucky to have Claudio Scarpati along with us to provide his expertise in these areas. An early stop occurred south of the caldera to look at the contact between the lower, brownish, Huckleberry Ridge Tuff overlain by the friable, light, Mesa Falls Tuff. We saw some basalt flows and lava domes within the Island Park Caldera, and the warm springs at Henry Fork. Within the Yellowstone Caldera, we stopped at Tuff Cliff to look at the Lava Creek Ignimbrite up close. This high rim deposit also gave us great views of the caldera floor. We then stopped at the uniquely calcite-rich Terrace Springs hydrothermal deposit and looked at the oxidized red/black glasses along Firehole River. Within the park, we saw more pools, mudpots, the deep canyon walls of the Grand Canyon of the Yellowstone, and a BIG buffalo right next to the road. The last few shots show a rather different lava flow texture - these are part of the Snake River Plain basalt lava flows at Hells Half Acre.
See three fun movies (be patient!):
Bubbling mud pots with Dr. Keith's commentary
Fountaining geysers with Drs. Christiansen, Keith, and Scarpati looking on
Please credit Jani Radebaugh for all pictures, thank you!