Serpentinite dike cutting harzburgite of Orocopia Schist at Cemetery Ridge, southwest Arizona. Cemetery Ridge is a rare and important example of a far-inland subduction complex exposed in southwestern Arizona. A new bedrock geologic map by Jon Spencer (AZGS, retired) and Gordon Haxel (USGS, retired) elucidates the geographic distribution of oceanic peridotite, chiefly harzburgite and serpentinite, in the Late Cretaceous Orocopia Schist. The map is accompanied by a page of citations of earlier work. You can view or download this map product at: http://repository.azgs.az.gov/uri_gin/azgs/dlio/2000
Photo by Jon Spencer
Photographer: Spencer, Jon
Photo Date: circa 2012
Photo Location Accuracy: Approximately Located
Photo Tags: serpentinite, oceanic peridotite, Cemetery Ridge, Yuma County, La Paz County, Orocopia Schist 
