Talks I can give to your class or seminar



I have worked on volcanoes in Ecuador, the Pacific Northwest, Central America, and the Galapagos Islands. I talk to students about the work of volcanologists and what volcanoes tell us about the interior of the earth.

The Galapagos Islands

I have been on 7 expeditions to study the volcanoes of the Galapagos Islands. I also have a fair knowledge of the amazing biota there and talk about the impact of the islands on the thoughts of Darwin.

Moon Rocks

Once a year, I am loaned a collection of moon rocks from NASA.

Colleges and Universities

The Basalt-Rhyolite Association: Alcedo Volcano, Galapagos and Vandfaldsdalen Macrodike, Greenland

These two bodies are similar in that they are made up almost entirely of rhyolite (or granite) and basalt (or gabbro), yet the rocks are related in completely different ways. It makes a very interesting contrast and addresses the oldest question in igneous petrology.

When Bad Things Happen to Good Plumes

Along with colleagues, I have developed models for plume-asthenosphere mixing in the Galapagos Islands. I have also worked on how subduction might have interfered with the Yellowstone plume, and how that relates to the Columbia River basalts and Snake River Plain.

The Evolution of Darwin's Islands

Most of my research career has been working on the Galapagos Islands. This talk is a basic geologic tour of the islands, focussing on volcanology and petrology.

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