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Filtering by: Subject Volcanic ash, tuff, etc. -- Northwest, Pacific Committee Member Grunder, Anita

Volatile mobility of trace metals in volcanic systems

Creator:

Loewen, Matthew W.

Abstract:

Semi-volatile trace metals like Li, Cu, Mo, Sn, In, and Pb have the potential to track mobility of a volatile phase in volcanic systems. In this dissertation four studies are presented that either directly investigate or are motivated by observations of trace metal behavior in volcanic systems. A common tool...

Resource Type:

Dissertation

Full Text:

Volatile Mobility of Trace Metals in Volcanic Systems
Early high Cascade silicic volcanism : analysis of the McKenzie Canyon and Lower Bridge tuff

Creator:

Eungard, Daniel W.

Abstract:

Silicic volcanism in the central Oregon Cascade range has decreased in both the size and frequency of eruptions from its initiation at ~40 Ma to present. The reasons for this reduction in silicic volcanism are poorly constrained. Studies of the petrogenesis of these magmas have the potential for addressing this...

Resource Type:

Masters Thesis
Stratigraphy of the neogene volcanic rocks along the lower Metolius River, Jefferson County, central Oregon

Creator:

Dill, Thomas E.

Resource Type:

Masters Thesis
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