Centers and Facilities

Argon Geochronology for the Earth Sciences (AGES) Lab

 The Argon Geochronology for the Earth Sciences (AGES) lab is located at Columbia's Lamont-Doherty Earth Observatory along the Palisades Parkway in Rockland County, New York. Our lab measures Argon isotope compositions and concentrations, mainly of single mineral grains, on a VG5400 noble gas mass spectrometer to determine the age of mineral formation. Our research subjects include paleocllmate provenance studies, volcanoes and deep earth time.

Cosmogenic Nuclide Group

Erratic Boulder with Mt. Cook in the background, New Zealand's Southern Alps

The LDEO Cosmogenic Dating Group, develops and refines terrestrial cosmogenic nuclides as chronometers and tracers in the Earth Sciences.

One of our core projects studies mountain glacier fluctuations -and the underlying climate drivers- across the globe from the last glacial cycle up to present day. Our goal is to understand what has driven ice-age/warm-period cycles as well as evaluating the vulnerability of mountain glaciers in our warming world, and the impact of the glacier melt on societies, energy and shelter.

A more recent project adresses the question of stability of the polar ice-sheets. We are analyzing sub-ice sheet bedrock for multiple cosmogenic nuclides, that tell us the story of past deglaciation and regrowth of these ice sheets.