The Rooney group seeks to understand the relationships between climate, tectonics, ocean geochemistry and evolution during critical transitions in Earth history.

Specifically, we use radiogenic isotope geochemistry in tandem with field geology to constrain interactions between the deep Earth and surface environments and the timing, rates and durations of geological events. n order to address such broad questions, the lab uses a wide-range of approaches (field geology, isotope geochemistry and geochronology).

I am currently seeking students for admission in 2022/23 interested in topics including but not limited to :

Pliocene and Pleistocene climate change and ice sheet dynamics

Paleoweathering proxy development and application in the Paleozoic

Understanding the formation and destruction of lower crust in arc settings using radiogenic isotopes

There are opportunities to join an existing NSF-funded project

Current Group Members:

Alexie Millikin (

Dr Tim Gibson (