Geologists led by Gordon Haxel (US Geological Survey) - blue-white shirt, examining oceanic peridotite exposed in the Orocopia Schist at Cemetery Ridge in southwestern Arizona.
AZGS geologists on-site include Jon Spencer (not shown), Charles Ferguson and Brad Johnson.
To view or download a geologic map of Cemetery Ridge, http://repository.azgs.az.gov/uri_gin/azgs/dlio/2000 .