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Filtering by: Subject Saint Helens, Mount (Wash.) Degree Field Geology

Meeting of the magmas : the evolutionary history of the Kalama Eruptive Period, Mount St. Helens, Washington

Creator:

Lieuallen, Athena Erin

Abstract:

Comprehension of eruptive histories is critical in understanding the evolution of magmatic systems at arc volcanoes and may supply evidence to the petrogenesis of intermediate and evolved magmas. Within the 300 ka eruptive history of Mount St. Helens, Washington, the Kalama Eruptive Period, 1479- ~1750 CE was bracketed by interludes...

Resource Type:

Masters Thesis

Full Text:

of the Magmas: the Evolutionary History of the Kalama Eruptive Period, Mount St. Helens, Washington
Sediment routing in a small watershed in the blast zone at Mount St. Helens, Washington

Creator:

Smith, Richard D. (Richard Dean), 1950-

Abstract:

A descriptive model of the routing of sediment that was delivered to the study area by the 1980 eruptions of Mount St. Helens has been developed. On hillslopes this sediment was distributed among three major storage compartments: 1) the tephra profile, 2) primary storage, and 3) secondary storage. The most...

Resource Type:

Masters Thesis

Full Text:

Mount St. Helens, Washington AN ABSTRACT OF THE THESIS OF Richard D. Smith for the degree of Master
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