Planetary surfaces provide a window into the geologic past of planets and can offer clues into their history of deformation. For example, endogenic forces such as tectonic activity resulting from secular planetary cooling can produce fault-driven topography that can be investiga…
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Despite Venus showing no evidence of a global system of tectonic deformation, a variety of tectonic landforms across Venus suggests a complex and active geologic history that is not fully understood. One of the most ubiquitous tectonic landforms identified are linear to arcuate,…
The Sevier-Toroweap fault system is a 250+ km high-angle normal fault located in southern Utah and northern Airzona in the High Plateaus subprovince. It is one of three main normal faults that accommodate the strain concentrated on the boundary between the Basin and Range and Co…
Cratons are the ancient, typically Archean in age, stable interior of continental plates. They are thicker and more stable than the surrounding lithosphere due to their lithospheric mantle composition of depleted peridotite and limited interaction with convecting mantle. The inh…
The western Snake River Plain (WSRP) in southwest Idaho has been characterized as an intracontinental rift basin but differs markedly in orientation and style from other western Cordilleran extensional structures. Understanding the rifting history of the WSRP and exhumation of i…
A rifting episode started in September 2005 with an intrusion of a 60 km-long mega-dike along the Dabbahu-Manda Hararo (DMH) rift segment in Afar, Ethiopia. Between 2005 and 2009 thirteen smaller volume dikes intruded different portions of the rift segment. Out of the 13 dikes, …
This dissertation combines volcanological research of three convergent continental margins. Chapters 1 and 5 are general introductions and conclusions, respectively. Chapter 2 examines the spatiotemporal development of the Altiplano-Puna volcanic complex in the Lípez region of s…
The first paper presented in this dissertation attempts to examine the igneous history of the younger suite of Harohalli alkaline dykes intruding the Dharwar craton in southern India providing robust constraints on the age of the Harohalli alkaline dyke swarm paleomagnetic pole …
The new thermochronometric dataset presented in this dissertation unequivocally shows a 5 Ma onset of rapid exhumation throughout the Greater Caucasus. Patterns of exhumation rule out the possibility of climate being a major cause of the accelerated erosion and point to a tecton…
Land surface phenology describes events in a seasonal vegetation cycle and can be used in a variety of applications from predicting onset of future drought conditions, to revealing potential limits of historical dry farming, to guiding more accurate dating of archeological sites…
The archipelagic country of Indonesia is vulnerable to tsunami hazard due to its tectonic setting. An updated tsunami catalogue numbers at least 133 tsunamis documented from 1608 to 2018. Approximately 80% of tsunamis in Indonesia were generated by earthquakes. Eastern Indonesia…
I apply array processing techniques to study the slowness and coda of P/Pdiff for 1,371 shallow earthquakes (< 200 km) that occurred in Asia, South America. Tonga-Fiji, and Indonesia, and were recorded by the medium-aperture array, YKA, in Canada. The slowness analysis shows lat…