GEOLOGY

Detailed explanation-1: -The closest volcanic field areas to Los Angeles County and Southern California are the Lavic and Coso Volcanic Fields. The Lavic Volcanic Field is located near Victorville and east of Lancaster. The Coso Volcanic Field is located approximately 181 miles north of Los Angeles County.

Detailed explanation-2: -The closest volcanic area to Los Angeles is the Coso Volcanic Field that lies just north of Ridgecrest, California, about 181 miles north of Los Angeles.

Detailed explanation-3: -Mt Shasta is not only a mountain to many of the locals but it is one of the largest stratovolcanoes on the west coast. A stratovolcano is a large, steep-sided, symmetrical cone built of alternating layers of lava, ash, cinders, blocks, and bombs. It is also called a composite volcano.

Detailed explanation-4: -Neenach Volcano is an extinct Miocene volcano in the Coastal Ranges of California. After formation, the volcanic field was split by a fault in the San Andreas Fault Zone, and over the last 23 million years, the two halves of the volcano have moved about 195 miles (314 kilometers) apart.