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Filtering by: Has journal Paleoceanography Resource Type Masters Thesis Subject Paleoceanography

Determination of unsaturation-, growth phase-, and growth rate-dependent hydrogen isotopic fractionation in C₃₇ alkenones produced by Emiliania huxleyi

Creator:

Wolhowe, Matthew D.

Abstract:

Recent works have investigated use of the hydrogen isotopic composition of C₃₇ alkenones (δD[subscript K37s]), lipid biomarkers of certain haptophyte microalgae, as an independent paleosalinity proxy. I discuss herein the factors impeding such an application and identify the potential alternative use of δD[subscript K37s] measurements as a proxy for non-thermal,...

Resource Type:

Masters Thesis

Full Text:

huxleyi 1. Introduction 1.1 Background A primary goal of paleoceanography is to reconstruct ocean
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