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Anita Grunder Colloquium Abstract (Nov 4, 2015)

Patterns in long-lived crustal magmatism based on comparison of the Aucanquilcha Volcanic Cluster of the central Andes and the Tuloumne Intrusive Cluster of the Sierra Nevada

The petrologic history of 11 million years of magmatism is recorded in a cluster of more than 20 volcanoes in the central Andes, where the crust is thick. Remarkable parallelism in lifespan, volume evolution, depth of magma storage, and compositional development indicate that these systems provide related perspectives on crustal feedbacks during protracted magmatism.