LAKE COUNTY — The softened, eroded volcanic earth flanking the roadway caused cracks that appear like claw marks slashed across the asphalt. The origins of the Manning Flat “canyon” located next to Highway 29 a mile and a half south of Kit”s Corner are debatable. But regardless of the origin, Cal-trans plans to re-route the […]
LAKE COUNTY — The origin of the so-called Manning Flat “Lake County Grand Canyon”?which spans out in fingers hundreds of feet deep and wide perpendicular to Highway 29 between Kelseyville and Lower Lake?is not the fault”s fault. Although there is a pre-ice age fault that lines up perfectly with the canyon, the origin is primarily […]
Obsidian. Photo by Kathleen Scavone.
LAKE COUNTY, Calif. – The science of geology presents itself to us daily via Lake County s contrasting landforms of mountains, valleys, streams and lakes.
As you drive south between Hidden Valley and Middletown great tracts of serpentinite, our State Rock lay exposed.
Middletown s Rabbit Hill offers stunning geologic features in its boulders and rock outcrops where serpentinite and a rock made up of microcrystalline quartz known as chert are exposed.
Serpentinite comes in an array of colors from shiny green to tans and browns. If you ve driven through the Lake 29 Expressway project, which is, as reported on Aug. 6, 2020, in this publication, The largest highway project in the county in 50 years, you may have marveled at the geologic features being unearthed by monster machines.