Research Interests

INTRODUCTION

I have an active research program in which I use light stable and radiogenic isotopes, together with geological field techniques, to study tropical and arctic paleoclimate and climate processes.

RESEARCH PROJECTS

Tropical Glacial Geology and Equilibrium Line Depression (Costa Rica and Guatemala)

Paleoclimate from Speleothem (Cave Calcite) deposits (Central America, Mexico, Great Basin)

Stable isotope geochemistry of precipitation and surface waters (Panama, Costa Rica, Guatemala)

Last glacial climate variability in Alaska from permafrost stable isotopes