South-Central Alaska

A study of the tectonic evolution of the Campanian-Eocene Chugach-Prince William (CPW) terrane in southern Alaska. This project has several distinct objectives that include: 1) understanding the regional depositional setting and source for of the CPW flysch; 2) understanding the intrusive history of this belt; and 3) determining the age and origin of the Knight Island ophiolite.

Peruvian Andes

We will generate continuous records of mountain glaciation in Peru that span the Holocene (~12 ka to present) through an approach that combines the acquisition and analysis of lake sediment cores with moraine dating using both lichenometry and cosmogenic radionuclides (10Be and 26Al). The pairing of paleolimnology with moraine dating will enable determination of both the timing and magnitude of ice margin changes through the Holocene with sufficient precison to enable rigorous testing of hypotheses concerning the causes of abrupt climate change in the tropics.