Earth Evolution

Susannah Porter

My research focuses on the early evolution and radiation of eukaryotes and its relationship to environmental change, and the fossil record of the earliest skeletal animals. Research uses fieldwork, descriptive systematics, comparisons with modern taxa, paleoecological and taphonomic analyses, and stable isotopic studies.

Duane DeVecchio

Duane DeVecchio is a broad field-based geologist with a background in structural geology and geomorphology. His research involves integrating a suite of Quaternary geochronological techniques, geologic mapping, and GIS-based topographic analysis to quantify the timing and rates of change of Earth’s surface due to depositional, denudational, and incisional processes that result from active tectonics and climate variability. DeVecchio is currently conducting research focused on the spatiotemporal tectonic and geomorphic evolution of the Western Transverse Ranges in Southern California.

Jim Boles

My research looks at the fundamental processes at the interface between dissimiliar mineral surfaces in fluids - applications to quartz-clay interaction (pressure solution) and precipitation of carbonates on mica. Clay minerals have been shown to enhance pressure solution of quartz and carbonates. Carbonate minerals and other phases have also been shown to grow selectively within biotite cleavages but not in muscovite.

John Cottle

My main research interests lie in the field of continental tectonics and focus on combining structural analysis, geothermobarometry, igneous and metamorphic petrology with high resolution U(-Th)-Pb isotope geochronology to identify and constrain the temporal and spatial scale of processes that serve to modify and/or produce new continental crust.

Sandra Seale

My work involves the analysis of ground response from borehole data. Working with the Antelope software and Matlab interface in developing automated processing technicques, I further the development of waveform inversion software to determine soil properties using borehole and surface array data.

Chen Ji

Research effects focus on exploring the physical processes of large earthquakes with various modern geophysical observations, such as broadband seismograms, high-rate GPS, and radar interferometry.
Current research interests:

Edward Keller

Dr. Keller's research is divided into two areas: 
1) studies of Quaternary stratigraphy and tectonics as they relate to earthquake hazard, active folding and mountain building; and 
2) study of hydrologic process and wildfire in the chaparral environment in southern California.

Daniel Lavallée

My research activities are related to many different aspects of nonlinear physics with applications in Geophysics. This interest has been the primary motivation for the development of new theoretical multifractal concepts and their application to turbulence, atmospheric physics, hydrology and landscape topography.

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