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Filtering by: Creator Colwell, Frederick Advisor Fisk, Martin R. Resource Type Dissertation

Impact of Igneous Mineralogy on the Composition and Metabolic Function of Microbial Biofilms in a Thermal Suboceanic Crustal Aquifer

Creator:

Smith, Amy R.

Abstract:

Igneous oceanic crust encompasses ~60% of Earth’s surface and is composed of basalt glass and mafic, ultramafic, and felsic minerals. A vast marine aquifer lies within the crust, exchanging geochemically altered fluids with seawater from the overlying ocean at ridge crests, flanks, seamounts, and outcrops where permeable crust is exposed....

Resource Type:

Dissertation

Full Text:

. Abstract approved: _____________________________________________________ Frederick S. Colwell Martin R
Prokaryotes associated with marine crust

Creator:

Mason, Olivia Underwood

Abstract:

Oceanic crust covers nearly 70% of the Earth's surface, of which, the upper, sediment layer is estimated to harbor substantial microbial biomass. Marine crust; however, extends several kilometers beyond this surficial layer, and includes the basalt and gabbro layers. In particular, the basalt layer has high permeabilities which allows for...

Resource Type:

Dissertation