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Filtering by: Has journal Andean Geology Subject Magmatism -- Chile

The geochemical evolution of the Aucanquilcha Volcanic Cluster : prolonged magmatism and its crustal consequences

Creator:

Walker, Barry Alan, Jr.

Abstract:

The interaction of magma with continental crust at convergent margins is fundamental to understanding if and how continents grow. Isotopic and elemental data constrain the progressive stages of development of the magmatic underpinnings of the long-lived Aucanquilcha Volcanic Cluster (AVC), situated atop the thick continental crust of the central Andes...

Resource Type:

Dissertation
Crustal architecture and magma dynamics in a large continental magmatic system : a case study of the Purico-Chascon Volcanic Complex, Northern Chile

Creator:

Burns, Dale H.

Abstract:

The ~1 Myr history of the Purico-Chascon volcanic complex (PCVC) records significant changes in the production and storage of magmas in the crust. At ~1 Ma activity at the PCVC initiated with the eruption of a large 80-100 km³ crystal-rich dacite ignimbrite with restricted whole rock ⁸⁷Sr/⁸⁶Sr isotope ratios between...

Resource Type:

Dissertation