Structural Geology is a discipline of the Geological Sciences that studies how tectonic stresses deform rocks.  These stresses produce folds, faults and other rocks (mylonites for instance) that record the history of tectonic stresses.  Geologists find geologic structures at plate boundaries (San Andreas fault for example), within mountain belts (Rockies and Himalayas), and above mobile substrates (Gulf of Mexico).  My research is focused on how impermeable membranes form along faults and the impact that these have on hydrocarbon entrapment.  I am also researching the structural and tectonic history of rocks in north-central Idaho, and I continue  to study the bedrock geology of the Spokane area.
 
 

Growth fault with well developed clay smear exposed in cliff face near Albuquerque New Mexico.