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Filtering by: Committee Member Nielsen, Roger L. Committee Member Dilles, John

The genesis of the San Vicente lead zinc rhythmite deposit, Peru : a petrologic, geochemical, and sulfur isotope study

Creator:

Schütfort, Erwin G.

Abstract:

The San Vicente zinc lead deposit is located in the Eastern Andes of Central Peru. The deposit is an epigenetic Mississippi Valley-type deposit based on stratigraphic, geologic, petrographic, and geochemical evidence. The dolomite host rocks of the Pucara Group are of Triassic-Jurassic age. The source of metals are red sandstones...

Resource Type:

Masters Thesis

Full Text:

, scientific inquiry, and geologic writing. My committee members John Dilles, Roger Nielsen, and Jack
Petrology of the reversely zoned Mickey Pass Tuff, west-central Nevada

Creator:

Templeton, Jeffrey H.

Resource Type:

Dissertation

Full Text:

me pinpoint several key localities in the northern Gillis Range. Roger Nielsen provided his
Feeder dikes to the Columbia River flood basalts : underpinnings of a large igneous province

Creator:

Petcovic, Heather L.

Abstract:

Feeder dikes to the Columbia River Basalt Group (CRBG) large igneous province provide a rare opportunity to examine magma transport through the shallow crust during flood basalt eruptions. Over 70% of the CRBG erupted from the Chief Joseph dike swarm, which is exposed across southeastern Washington, eastern Oregon, and western...

Resource Type:

Dissertation
Volcanology and petrology of the Rattlesnake Ash-Flow Tuff, eastern Oregon

Creator:

Streck, Martin J.

Abstract:

The Rattlesnake Ash-Flow Tuff erupted 7.05±0.01 Ma from the western Harney Basin, southeastern Oregon. The location of the vent area is inferred based on vent-ward increases in size of pumices, in degree of welding, and in degree of post-emplacement crystallization. Today's outcrops cover 9000 km2 and estimated original outcrop coverage...

Resource Type:

Dissertation

Full Text:

, Roger Nielsen, and John Dilles, are much appreciated. Among many people who contributed with