Global Volcanism Program | Image GVP-05780
Mount Konocti, a twin-peaked complex dacitic volcano of Pleistocene age on the south-central shore of Clear Lake, is the most prominent feature of the Clear Lake volcanic field. Wright Peak (left) is a rhyodacitic and dacitic lava dome with associated lava flows, and Buckingham Peak (right) is composed of dacitic lava flows capped by an eroded basaltic-andesite cinder cone. The flat ridge extending across the photo in front of Mount Konocti is a peninsula of Cretaceous-Jurrasic rocks of the Franciscan formation.
Photo by Lee Siebert, 1967 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.