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Author:

Hotinski, Roberta Michelle

Title:

Life's Influence on the Sedimentary Record: The Interplay of Ocean Chemistry, Circulation, and the Biological Pump

Graduate Program:

Geosciences

Keywords:

ocean stagnation
Pethei
Permian
Precambrian
carbon isotopes
anoxia
biogeochemical cycles

File:

Download Thesis.pdf

Committee Members:

Hiroshi Ohmoto, Committee Member
Lee Kump, Committee Chair/Co-Chair
Michael Allan Arthur, Committee Member
Raymond Gabriel Najjar Jr., Committee Member

Author:

Yamaguchi, Kosei

Title:

Geochemistry of Archean–Paleoproterozoic Black Shales: The Early Evolution of the Atmosphere, Oceans, and Biosphere

Graduate Program:

Geosciences

Keywords:

N2 fixation
Carbon
Photosynthesis
Sulfur
Sulfate reduction
Stable Isotopes
Proterozoic
Continental Crust
Black Shales
Paleoproterozoic
Anoxic
Pilbara
Hamersley
Iron
Australia
Nitrogen
Archean
Oxic
Pyrite
Thorium
Nitrification
Denitrification
Uranium
Molybdenum
Methanogenesis
Griqualand West
Witwatersrand
Barberton
South Africa

File:

Download Kosei.pdf

Committee Members:

Lee Kump, Committee Member
Raymond Gabriel Najjar Jr., Committee Member
Hiroshi Ohmoto, Committee Chair/Co-Chair
Michael Allan Arthur, Committee Member

Author:

Hurtgen, Matthew T.

Title:

Neoproterozoic Sulfur Isotopes, Snowball Earth Events and the Evolution of Microbial Sulfur Species

Graduate Program:

Geosciences

Keywords:

sulfur isotopes
Neoproterozoic
snowball Earth
sulfate concentrations
Precambrian
Namibia

File:

Download thesis.pdf

Committee Members:

Michael Allan Arthur, Committee Chair/Co-Chair
Lee Kump, Committee Member
Hiroshi Ohmoto, Committee Member
Charles Raymond Fisher Jr., Committee Member

Author:

Ono, Shuhei

Title:

Detrital uraninite and the early Earth's atmosphere: SIMS analyses of uraninite in the Elliot Lake district and the dissolution kinetics of natural uraninite

Graduate Program:

Geosciences

Keywords:

Proterozoic
atmosphere
oxygen
dissolution kinetics
quartz-pebble conglomerate
SIMS
Archean
detrital
uraninite

File:

Download S.Ono_PhD_Thesis.pdf

Committee Members:

Hiroshi Ohmoto, Committee Chair/Co-Chair
Kwadwo Asare Osseo Asare, Committee Member
Peter J Heaney, Committee Member
Lee Kump, Committee Member

Author:

Otake, Tsubasa

Title:

Understanding Redox Processes in Surface Environments from Iron Oxide Transformations and Multiple Sulfur Isotope Fractionations

Graduate Program:

Geosciences

Keywords:

mass-independent fractionation
sulfur isotope
banded iron formation
transformation
iron oxide
ab initio calculation

File:

Download Otake_thesis_2008.pdf

Committee Members:

Hiroshi Ohmoto, Committee Chair/Co-Chair
Hubert Lloyd Barnes, Committee Member
Susan Louise Brantley, Committee Member
Peter J Heaney, Committee Member
Kwadwo Osseo Asare, Committee Member
David J Wesolowski, Committee Member

Author:

Watanabe, Yumiko

Title:

The Late Archean biosphere: Implications of organic and inorganic geochemistry of marine shales and terrestrial paleosols

Graduate Program:

Geosciences

Keywords:

geochemistry
biosphere
organic matter
shale
Archean
paleosol

File:

Download YumikoWatanabethesis.pdf

Committee Members:

Blair Hedges, Committee Member
Hiroshi Ohmoto, Committee Chair/Co-Chair
Katherine Haines Freeman, Committee Member
Michael Allan Arthur, Committee Member

Author:

Rybacki, Kyle S

Title:

Deciphering the early oxidation of Earth's surface: evidence from Fennoscandia, arctic Russia

Graduate Program:

Geosciences

Keywords:

Precambrian oxygen
paleosol
iron isotopes
chromium isotopes
Great Oxidation Event (GOE)
oxidation
U-Th-Pb geochronology

File:

Download Rybacki_Dissertation_final.pdf

Committee Members:

Lee Kump, Dissertation Advisor/Co-Advisor
Lee Kump, Committee Chair/Co-Chair
Hiroshi Ohmoto, Committee Member
Maureen Feineman, Committee Member
Patrick Joseph Drohan, Committee Member