Compositional Diversity in Volcanic SuitesKent Ratajeski
Department of Earth Sciences, Montana State University, Bozeman, MT
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.