Joann Stock

Joann Stock is a professor of geophysics and structural geology at the California Institute of Technology (Caltech) whose research focuses on plate boundary tectonics. She utilizes field mapping, in situ stress measurements, and geophysical data to study how Earth's lithospheric plates interact at their margins.

Stock has conducted extensive field research on the tectonics of Baja California and the Gulf of California, studying the transition from subduction to transform plate boundaries along the Pacific margin. She has also worked on tectonic problems in the Caribbean, South America, and the Middle East.

Yes, Stock's research at Caltech includes studies related to the San Andreas Fault system and other active plate boundaries in southern California. Her work contributes to understanding the tectonic processes driving seismic hazard in the region.

As a professor in the Division of Geological and Planetary Sciences at Caltech, Stock teaches courses on structural geology, tectonics, and field geology methods. She has also advised numerous graduate students conducting doctoral research on plate boundary processes worldwide.