Here is a taste of what we do:

Fluctuations of the Greenland Ice Sheet during the Holocene

We use cosmogenic nuclide analysis (mostly 10Be dating) to reconstruct the history of Greenland Ice Sheet margins.

We use sediment records from proglacial-threshold lake basins to fix the position of the Greenland Ice Sheet margin during periods of time in which it was smaller than it is at present.

Dating Pleistocene and Holocene glaciation in Alaska

We reconstruct the extent and history of glaciation throughout Alaska (Brooks Range, Alaska Range, Southeast Alaska, etc.).

We investigate proglacial lake sediments as archives for upvalley alpine glacier changes.

Glacier history of Baffin Island, Arctic Canada

We have a long-standing interest in reconstructing glacier change on Baffin Island during the latest Pleistocene and Holocene. Recent work is focused on fjord deglaciation and Holocene abrupt climate change.

We reconstruct climate change from lacustrine archives on Baffin Island, using varves and biomarker proxies to investigate Holocene climate change and Neoglaciation.

Deglaciation of the Fennoscandian Ice Sheet

The deglaciation of the Fennoscandian Ice Sheet and the Norwegian Channel Ice Stream, and ice margin advances during overall retreat, are currently being reconstructed.


In the cosmogenic isotope lab, we analyze rock samples from glacial terrains to date glacial features and determine ice sheet processes.

Lena Håkansson oxidizing Be.

Samples being processed for 10Be and 26Al exposure dating.

Column chemistry.

In the lake sediment lab, we analyze biological, chemical and physical properties of lake sediment to study arctic paleoclimate.

Laminations revealed in an extruded sediment core from a proglacial lake on Greenland.


Graduate students coring from the ice during a spring trip to Baffin Island, Arctic Canada.