This field excursion, followed and was part of, the Annual Meeting of the Geological Society of America which I attended, held in Salt Lake City in 1997.

The Snake River Volcanic Province was the destination of this field excursion. It is a volcanic area dominated by Cenozoic silicic and baslatic volcanic rocks - lava flows and ignimbrites. This geological province does not comply with state boundaries, and as such the Snake River Volcanic Province lies across parts of the states of Oregon, Idaho and Nevada. The following images relate to 4 intensive and strenuous days of visiting outcrops of importance and "magnificance" in this volcanic province. There are some spectacular outcrops, as you will see.

Reference for this field Trip: McCurry, M., Bonnichsen, B., White, C., Godchaux, M.M. and S.S. Hughes, 1997, Bimodal basalt-rhyolite magmatism in the central and western Snake River Plain, in, P.K. Link and B. J. Kowalis, eds., Proterozoic to Recent Stratigraphy, Tectonics, and Volcanology, Utah, Nevada, Southern Idaho and Central Mexico, GSA Field Trip Guidebook, Brigham Young University Geolological Studies, v. 42, part I, p. 381-422.