Fields of interest:
I consider my field to be Historical Geology. Using the record from sediments and sedimentary rocks, I seek to document aspects of Earth's history. Understanding the provenance and processes recorded in the geochemistry of sediments and sedimentary rocks lies at the heart of my research interests. I have strong interest in tectonics and continental crust evolution questions on the longer time scale. I have an active program of applying radiogenic isotopes for tracing the sources of sediments with the goal of understanding Quaternary climate changes and associated changes in winds, currents and glaciers. Provenance studies of ice rafted detritus are key to working out the dynamic relationships among paleo-climate and paleo-ocean circulation and their interactions with the large ice sheets that covered the northern continents during the ice ages. Geochronology is essential to my research and I am actively participating in projects to improve our ability to obtain reliable age estimates on events in Earth's history.
- Ar Geochronology Lab