Associate Professor
Mark lecturing in the Tetons
Field trip to Tetons of NW Wyoming
Lamont-Doherty Earth Observatory of Columbia University
P.O. Box 1000
Palisades, NY 10964
(845) 365-8361

My students and I work on a wide range of topics involving the processes of continental deformation. Our research is interdisciplinary and includes aspects of structural geology, seismology, volcanology, paleomagnetism, Quaternary stratigraphy, isotope geochronology and numerical modeling. For example, we have initiated a research program on the growth of normal fault systems. The underlying mechanical process by which faults initiate, grow and interact to form fault systems is basic to understanding how extension is accommodated in the brittle crust. Despite its significance, research in this area still is in its infancy. Recently we have brought to question the role of low-angle upper crustal normal faults in accommodating large amounts of extension. Our discoveries have motivated us to undertake a new synthesis of Tertiary extension in the Basin and Range involving redefinition of its timing, kinematics and causes.

In general our research group takes an eclectic approach to science, trying to integrate a range of techniques from a number of different fields to solve fundamental problems in structure and tectonics.

Education and Positions Held
Professional Activities
Instruction Classes and Seminars
Military Service

Department of Earth and Environmental Sciences (DEES) Homepage