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Quien Sabe Volcanic Field

By California Volcano Observatory October 2024 (approx.)
Viewed from a rocky ledge, a brown-and-green grassy valley filled with eroded, rolling hills slopes towards a body of water at the lower right. Behind them, more hills covered in oak trees and a line of distant mountains form the horizon.
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Detailed Description

A view of the southern Quien Sabe Range from high on Basalt Hill in Merced County. The Quien Sabe range is comprised of igneous intrusions, from >9 Ma to >11 Ma, predecessors to the volcanics of the Berkeley Hills and the southeastern equivalent of the Burdell Mountain lavas near Petaluma. Photo courtesy of Stephen W. Edwards

Sources/Usage

Public Domain.

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