Please submit any useful information about climbing Clear Lake Volcanic Field that may be useful to other climbers. volcanic field tends to be active for a time, then go extinct. The Clear Lake Volcanics are the northernmost of these fields, and they are still considered active!

Clear Lake Volcanic Field. Be the first to submit your climbing note! Clear Lake volcano Clear Lake volcanic field lies in the northern Coast Ranges, California, ca. St. Helena. Summer Field Notes 2012: The Clear Lake Volcanic Field Little Borax Lake on the western shore of Clear Lake. The feature is a maar that formed between 100,000 and 10,000 years ago. The field includes The Geysers and Cobb Mountain area, but not Mt. Consider things such as access and accommodation at the base of Clear Lake Volcanic Field, as well as the logistics of climbing to the summit. Clear Lake is a natural freshwater lake in Lake County in the U.S. state of California, north of Napa County and San Francisco.It is the largest natural freshwater lake wholly within the state, with 68 square miles (180 km 2) of surface area.At 2.5 million years, it is the oldest lake in North America.

This Quaternary volcanic field has erupted intermittently since 2.1 million years ago. Clear Lake Volcanic Field Climbing Notes.

The Clear Lake Volcanics are located in the California Coast Ranges about 150 km north of San Francisco. 135 km north of San Francisco.

California Volcano Observatory.

Geology & History Hazards Monitoring Multimedia Publications When magma moves into a volcanic system, and closer to the surface of the earth, the area surrounding the volcano may move upward and outward. At Lassen Volcanic Center, this swelling is measured using the Global Positioning System (GPS).

The oldest part of the field (about 2 million

Clear Lake volcanic field Most recent eruption: about 10,000 years ago Nearby towns: Clearlake, Kelseyville, Lakeport, Lucerne Threat Potential: High . Deformation monitoring at Clear Lake Volcanic Field. The volcanic field consists of lava dome complexes, cinder cones, and maars of basaltic-to-rhyolitic composition.