I am a chemical geomorphologist: a person who studies the interaction of chemical processes and physical erosion processes on the Earth’s surface. My current focus is on how rock breaks down to be released into mobile regolith (or soil) through physical stresses and chemical alteration. The architecture of weathered rock and soil layers at the surface reflects the history of emplacement of the rock, tectonic movements, attack by biologic systems (roots and associated microorganisms), and climate-driven erosion processes. I study aspects of these processes: weathered rock strength, water flow paths, rates of mobile regolith formation, rock chemical alteration, solute fluxes. The goal is to develop models that describe interaction of erosion and weathering processes to form the architecture of the near-surface environments, also known as the critical zone.
GEOG 1011 - Environmental Systems: Landscapes and Water
Primary Instructor
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Spring 2018
Lect. and lab. Introduces landscapes and flowing water, emphasizing the formation and geographic distribution of mountains, volcanoes, valleys, and deserts, and their shaping by rivers and glaciers. Includes field trips.
GEOG 4261 - Glaciers and Permafrost
Primary Instructor
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Spring 2018
Surveys the major terrestrial components of the cryosphere, including permafrost, glaciers and ice sheets. Emphasizes physical processes involving ice, including thermal behavior, ice deformation and mass balance, but also considers biogeochemical processes and landforms associated with ice. The climate context, including human interactions and recent climate history, will be considered. Taught in a combination lecture-seminar format. Recommended prerequisite: GEOG 4241.
GEOL 1010 - Exploring Earth
Primary Instructor
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Fall 2019
Introductory geology for majors and non-majors. Studies Earth, its materials, its characteristics, its dynamic processes, and how it relates to people. Separate lab (GEOL 1030) is recommended. Degree credit not granted for both GEOL 1010 and GEOL 1012.
