The 1989 Loma Prieta M7.1 earthquake is considered to have ruptured along a seismic gap in the San Andreas Fault System. The Calaveras fault is considered to be the most dangerous fault in the S.F. Bay area.
Moraines are glacial depositional landforms.
Yosemite National Monument is famous for its erosional landforms carved by glaciers. Through Geologic Time Rocks older than about 600 million years are rare in California. Bonus Question . From the summit of Mt. Lassen, you notice a majestic large, snow-capped volcano to the northwest and a dark wide volcano directly to the north. Also, the land to the east is flat and composed of volcanic rock.