I am a geochemist interested in the processes that drive mountain building, crustal evolution, and landscape change. Low-temperature thermochronology (T ≈ 40–300 ˚C) is my primary tool because it is applicable to a wide range of interesting problems in the Earth sciences.

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Applied Thermochronology

apatite thermochronology from the Henry Mountains

Thermal history modeling of rocks from Colorado's Rocky Mountain Front Range. Stay tuned!

the Colorado Plateau's Cenozoic history of erosion and magmatism. Currently in review.

MEthod Development

Helium thermochronology methods are advancing rapidly as we improve (1) our understanding and measurement of He diffusion in minerals and (2) our ability to robustly interpret He cooling ages as the timing of an event in Earth history and/or a rate of some Earth system process.

monazite (U-Th-Sm)/He dating

U-Th-rich grain boundary phase (GBP) effects on apatite He ages

modeling the effects of plutonism on cooling ages

In the works

New projects in development with colleagues.

anthropogenic fire and the erosional response to the arrival of humans in Australia

thermochronologic record of eruptive flux and longevity of the dikes that fed the Columbia River flood basalts

Past projects

sedimentary thoroughfare and connections in the Antarctic

evolution of the central Andean orogen

Keck Nova Scotia: Evolution of a Continental Margin