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Uncovering the Neoproterozoic Carbon Cycle
(Nature Publishing Group, 2012)
Interpretations of major climatic and biological events in Earth history are, in large part, derived from the stable carbon isotope records of carbonate rocks and sedimentary organic matter1,2. Neoproterozoic carbonate ...
Constraints on Global Carbon Cycling, Basin Formation, and Early Animal Evolution During the Neoproterozoic and Early Cambrian
(2015-09-25)
Within this dissertation, I document different time intervals during the Neoproterozoic through the early Cambrian (1000 – 525 Ma), one of the most dynamic and non-uniformitarian intervals in the history of the Earth. This ...
Pleistocene to Modern Deformation of the Central Los Angeles Basin
(2015-09-02)
We combine the principles of sequence stratigraphy and syntectonic (growth) stratigraphy to assess deformation of the central Los Angeles (LA) basin from the late Pleistocene to the present. Sequence stratigraphy provides ...
Active deformation over multiple earthquake cycles in the southern Junggar fold and-thrust belt, NW China and fractured reservoir characterization using 3D geomechanical restorations
(2016-05-19)
This dissertation investigates natural deformation processes over multiple earthquake cycles in the seismically active, southern Junggar basin, NW China and additionally explores the capabilities of 3D geomechanical ...
The Neoproterozoic and Early Paleozoic Tectonic and Environmental Evolution of Alaska and Northwest Canada
(2015-05-04)
Neoproterozoic and early Paleozoic sedimentary deposits of the North American Cordillera record large fluctuations in global biogeochemical cycles, the establishment and diversification of multiple eukaryotic clades, the ...
Neoproterozoic to Paleozoic Geology of Southwestern Mongolia
(2016-05-10)
The Neoproterozoic and Paleozoic evolution of global climate, tectonics, ocean geochemistry, and biological diversification are recorded in stratigraphic successions globally. The rock record of southwestern Mongolia has ...
Multiple Sulfur Isotope Applications in Diagenetic Models and Geochemical Proxy Records
(2016-09-09)
Many of the long-term geochemical fluxes influencing the surface sulfur cycle are microbially catalyzed and a substantial portion of active S cycling occurs in organic-rich continental margin sediments. Stable S isotopes ...
Paleomagnetic and Geochronologic Constraints on the Neoproterozoic Tectonics and Climate of the Western Margin of Laurentia
(2017-05-16)
This dissertation focuses on three unique but complementary projects related to Neoproterozoic (1000-542 Ma) tectonics and climate of western North America (Laurentia). I have 1) isolated paleomagnetic evidence for crustal ...
A Portrait of Terrestrial Volatile Evolution From Mantle Noble Gases
(2016-10-31)
Volatile elements and compounds provide important insights into large-scale planetary and tectonic processes. The chapters in this thesis exploit the wealth of information provided by noble gas measurements to address a ...
On the Time Scale Structure of Climate Variability and Response
(2016-12-15)
This thesis analyzes several aspects pertaining to the time scale structure of climate variability and the temperature response to external radiative forcing. The analysis begins with an examination of the structure of ...