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Filtering by: Advisor Klinkhammer, Gary P. Decade 2000-2009

Development of a rare earth element paleoproxy

Creator:

Haley, Brian Alexander, 1973-

Abstract:

This thesis describes the development of a rare earth element (REE) proxy for paleoceanographic studies of climate change. This work was done in three stages with the goal: (1) To develop a cleaning method that overcomes the problems of REE readsorption; (2) To measure pore water REEs for evaluation of...

Resource Type:

Dissertation

Full Text:

FORAMINIFERAL TESTS Brian A. Haley and Gary P. Klinkhammer Chemical Geology Elsevier Science Publishing Co
Design, assessment, and future implications of the Multiple Enzyme Analyzer (MEA), a tool for in-situ monitoring of marine microbial activity

Creator:

Jaeger, Stephanie A.

Abstract:

The microbial loop plays a crucial role in remineralization of organic matter and fuels recycled production in the aquatic environment. The capability of microbes to utilize particular compounds can be examined through their ectoenzyme (found outside the cell) activities using fluorogenic substrate analogs. These catalysts hydrolyze polymers otherwise too large...

Resource Type:

Masters Thesis

Full Text:

: ______________________________________________________ Gary Klinkhammer The microbial loop plays a crucial role in remineralization of
Deconvolving the sedimentary phases of barium using flow-through time-resolved analysis

Creator:

Hsieh, Chih-Ting

Abstract:

The distribution of barite (BaSO₄) in marine sediments has long been studied as a proxy for paleoproductivity. While pure barite is known to be a stable mineral in oxic sediments, it is also known that variations in the Sr/Ba ratio influence its solubility and liability during early diagenesis. To extract...

Resource Type:

Masters Thesis

Full Text:

: __________________________________________________ Marta E. Torres and Gary P. Klinkhammer The distribution of barite