Compositional Diversity in Volcanic Suites
This activity was selected for the On the Cutting Edge Exemplary Teaching Collection
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This page first made public: Oct 19, 2006
Published Oct. 26, 2004.
In this exercise, students use whole-rock major- and trace-element compositions of volcanic rocks to explore the origins of compositional variation in igneous suites. Large datasets from the Yellowstone and Crater Lake calderas are downloaded from the GEOROC database, imported into Excel spreadsheets, and graphed to learn about the different petrogeneses of these two volcanic suites.