I have over 20 years of experience as a geologist and I am a native of the San Francisco Bay Area - absolutely the best place on Earth to study geology! I teach and do research at San Francisco State University where I have been a professor since 2005. I study geology around the world and I have led trips to many regions around California and the western U.S. I give seminars to the general public and I teach at both the undergraduate and graduate levels. I am a field geologist which means that I use a combination of geomorphic features, both small- and large-scale structures, bedrock exposures, and soils and their overlying sediments to understand the geology of a region.