Research
Over the past 15 years, my research has centered on the interpretation of stratigraphy as an archive of Earth's past climates. My primary interest has been in ancient cyclic stratigraphy as a recorder of quasi-periodic changes in Earth-Sun distance and orientation (Milankovitch cycles). This research involves 'cyclostratigraphy,' a field that has recently been tapped as a means to calibrate geological time with very high precision. One of our Milankovitch projects has become a focus of an intractable geological dispute (the Latemar controversy). I also study paleoclimate variations recorded in polar ice and glaciogenic deposits (see Polar Climates). Finally, in our own "back yard," Chesapeake Bay stratigraphy reveals an estuarine sedimentation that was hyper-sensitive to Mid-Atlantic climate variations over the past century.
Earth's orbital parameters
Orbitally forced stratigraphy
Astronomical time for Earth history
Antarctic Drilling (ANDRILL) Program
Dansgaard-Oeschger oscillations
Greenland ice cores
20th Century climate response
Hydrometeorological controls
CHRONOS virtual network
CHRONOS cyclostratigraphy
Integrated chronostratigraphy
GEON cyber-infrastructure for geosciences
The Controversy
The Milankovitchian perspective
The Sub-Milankovitchian perspective
The Buchenstein angle
Climate variability
Climate variations
Earth's climate history
Paleoclimate archives
VIRTUAL research
