The early Miocene Quechan volcanics, SE California, U.S.A.: slab-window or continental-margin arc volcanics?
Department of Geological Sciences,
San Diego State University,
Advisor Dr. Gary Girty
Located between Indian Pass and Picacho State Recreation Area, SE California are widespread exposures of an ~4 to 1.2 km thick early Miocene volcanic and epiclastic unit. The 23.4 ± 0.4 Ma Quechan volcanics form the lowest and thickest part of the volcanic...