The Cape Mendocino region of California's north coast is one of the most seismically active regions in the "Lower Forty-eight" United States. Three earthquakes with epicenters nearby at Petrolia and offshore west of Cape Mendocino, 25–26 April, 1992, were outstanding, one reaching 7.2 on the Richter scale; they demonstrated that the Cascadia subduction zone is both capable of producing large earthquakes and generating tsunamis. Many geologists and seismologists believe that the main shock in the 1992 sequence may be a forerunner of a much more powerful earthquake in the Pacific Northwest.
Offshore of Cape Mendocino lies the Mendocino Triple Junction, a geologic triple junction where three tectonic plates come together. The San Andreas Fault, a transform boundary, runs south from the junction, separating the Pacific Plate and the North American Plate. To the north lies the Cascadia subduction zone, where the Gorda Plate is being subducted under the margin of the North American plate. Running west from the triple junction is the Mendocino Fracture Zone, the transform boundary between the Gorda Plate and the Pacific Plate.
Cape Mendocino's coordinates are 40 Degrees North and 124 Degrees West
Diagnosis of the Forcing and Structure of the Coastal Jet near Cape Mendocino Using In Situ Observations and Numerical Simulations
Sep 01, 2007; ABSTRACT Several flights were conducted by the University of Wyoming King Air near Cape Mendocino, California, during June 2004...
A steep genetic cline in yellowtail rockfish, Sebastes flavidus, suggests regional isolation across the Cape Mendocino faunal break.(Report)
Jan 01, 2011; Introduction While it was originally anticipated that marine species with protracted pelagic larval stages would be genetically...