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Author:

Perkons, Eriks

Title:

The Contribution of Regional Variability to Beta Diversity: A Case Study of the Deep-water Marine Communities of the Middle Upper Ordovician of Eastern Laurentia

Graduate Program:

Geosciences

Keywords:

Paleontology
Paleoecology
Geobiology
Ordovician
Trenton
Gradient
Biofacies
Beta diversity
Salona
Coburn

File:

Download Perkons_Thesis_Upload_2.pdf

Committee Members:

MARK E PATZKOWSKY, Thesis Advisor/Co-Advisor
Peter Daniel Wilf, Thesis Advisor/Co-Advisor
Michael Allan Arthur, Thesis Advisor/Co-Advisor

Author:

Hagedorn, Jacob Gerrit

Title:

THE LIVING FILTER: MONITORING NITRATE ACCUMULATION AFTER 50 YEARS OF WASTEWATER IRRIGATION

Graduate Program:

Geosciences

Keywords:

Living Filter
Nitrogen

File:

Download Hagedorn_Thesis_Final2.pdf

Committee Members:

Demian Saffer, Thesis Advisor/Co-Advisor
Michael Allan Arthur, Committee Member
Susan Louise Brantley, Committee Member

Author:

Ilhardt, Peter Donald

Title:

Micro-Scale Sulfur and Carbon Isotope and Trace Metal Analysis of a Neoarchean Stromatolite: Evidence for a Redox Transition in Epeiric Platform Carbonates Prior to the Great Oxidation Event

Graduate Program:

Geosciences

Keywords:

Neoarchean
Stromatolite
Geochemistry
Sulfur Isotopes
Carbon Isotopes
Trace Metals
Great Oxidation Event
Pyrite
Microanalysis
Mass-Independent Fractionation

File:

Download Ilhardt_PSU_Thesis.pdf

Committee Members:

Christopher Howard House, Thesis Advisor/Co-Advisor
Peter J Heaney, Committee Member
Michael Allan Arthur, Committee Member