NEWLY DISCOVERED PERIODICITY IN MIOCENE, HIGH LAVA PLAINS AND CO-CRBG RHYOLITES OF EASTERN OREGON TIED TO COEVAL BASALT MAGMATISM AND REGIONAL EXTENSION EVENTS
SWENTON, Vanessa1, STRECK, Martin1, MIGGINS, Daniel P.2 and MCINTOSH, William3, (1)Department of Geology, Portland State University, 1721 SW Broadway Ave, Portland, OR 97201, (2)College of Ocean and Atmospheric Sciences, Oregon State University, 104 CEOAS Admin Bldg, Corvallis, OR 97331-5503, (3)New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801