Swedes Flat pluton
Swedes Flat pluton
Late Jurassic, ~159-165 Ma
Granodiorite south of Lake Oroville. This pluton has zircon U-Pb ages of ~159 Ma (Irwin and Wooden, 2001) and ~165 Ma (Rousseau, 2016). Interpreted as part of the plutonic component of the Smartville Volcanic complex.