INSTAAR lab: 303 492-5075
Benson Earth Sciences office: 303 492-8437
My primary scholarly interests focus on gaining an improved understanding of how the physical earth system operates.
Toward this end, I am specifically interested in using the Quaternary as a means to reconstruct the coupled ocean/atmospheric/ice climate system. By reconstructing past environmental changes it is possible to get a better understanding of the rates and magnitude of natural climate variability and the various feedback mechanisms in the global climate system. I am also interested in the role of humans in the modification of landscapes and ecosystem on Quaternary timescales.
- PhD: University of Colorado Boulder, 1975
- Distinguished Professor, University of Colorado System, 2021
- Distinguished Career Award, American Quaternary Association, 2018
- Elected Fellow, American Geophysical Union, 2009
- Elected Foreign Member, Norwegian Academy of Science and Letters, 2008
- Easterbrook Distinguished Scientist Award, Quaternary Geology and Geomorphology Division, Geological Society of America, 2005
- Elected Fellow, Geological Society of America, 1986
My present research is on Quaternary stratigraphy and dating methods; amino acid geochronology and cosmogenic exposure dating; and glacial history of the Arctic, focusing on glacial chronology and ice-sheet dynamics using direct field evidence and quantitative estimates of the timing and magnitude of warm times in the Arctic. I also have research interests in monsoons on Quaternary time scales and the causes of megafauna extinctions.
- GEOL 5420: Quaternary Dating Methods
- CVEN 5838-001: Rockfalls and Avalanches
- GEOL 1060-003: Global Change: An Earth Science Perspective
- GEOL 5700: Holocene Nonlinearities
- GEOL 3040-003: Geological Record of Global Change
- GEOL 5420-003: Quaternary Geochronology/Quaternary Stratigraphy
- GEOL 5700-001: Volcanism in the Arctic System