Donnel Foster Hewett Speakers

Our Speakers

2019-2020 D. Foster Hewett Lecture Series


Kristin Bergmann, Massachusetts Institute of Technology (MIT), "Climate extremes at the dawn of animal life"

Willy Guenthner, University of Illinois, “In search of lost time: Constraints on Neoproterozoic exhumation of the Great Unconformity from deep-time thermochronology”

Brenhin Keller, Dartmouth College, "A Neoproterozoic glacial origin of the Great Unconformity"

Francis MacDonald, University of California - Santa Barbara, "The initiation of Snowball Earth"

      Contact Prof. Peter Zeitler (, 610-758-3671) for additional details or answers to questions.