Sample ID: 316
Georef Number: 2007-002412
Reference Title: Rhyodacites of Kulshan Caldera, north Cascades of Washington;post-caldera lavas that span the Jaramillo
Reference Author: Hildreth, Wes; Lanphere, Marvin A; Champion, Duane E; Fierstein, Judy

Location Sample Detail Major Data? YES Trace Data? NO Isotope Data? NO

Age: 1.155 Min Age: 1.117 Max Age: 1.193 Geological Age: PLEISTOCENE Age Method: AR_AR Material: IGNEOUS Type: VOLCANIC Composition: FELSIC Rock Name: RHYODACITE

Rock Data

Reference	Technique	Material	SIO2	K2O
2007-002412	XRF	WHOLE ROCK	68.1	2.52