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Filtering by: Creator Shindler, Bruce A. Committee Member Coblentz, Bruce Degree Field Geology

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
The role of subduction fluids in generating compositionally diverse basalts in the Cascadia subduction zone

Creator:

Rowe, Michael C.

Abstract:

The primary goal of this study is to assess the impact of a subduction component added to the mantle wedge beneath the Oregon Cascades to the composition and fO2 of primitive Cascade basalts. Olivine-hosted melt inclusions from compositionally diverse basalts across the Cascade arc (~100 km) are utilized in an...

Resource Type:

Dissertation