The High Lava Plains of Oregon: Volcanic and Tectonic Connection between Yellowstone and the Cascades

Anita Grunder

Oregon State University

5:30 pm social hour

The High Lava Plains is an enigmatic province between the hot-spot related Steens Basalts and the subduction-related Cascades. Dr. Grunder will explore the implications of the westward age progression of rhyolites and the effect of protracted magmatism on the composition of the volcanic rocks and the crust.

Links to two videos from Anita's presentation:

Cenozoic Volcanism in the Pacific Northwest - 55 million years to present

Magma evolution in an extentional setting—High Lava Plains