Sample ID: 276B
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: 1.005
Min Age: 0.988
Max Age: 1.022
Geological Age: PLEISTOCENE
Age Method: AR_AR

Material: IGNEOUS
Type: VOLCANIC
Composition: INTERMEDIATE
Rock Name: ANDESITE



Rock Data
Reference Technique Material SIO2 K2O
2007-002412 XRF WHOLE ROCK 60.5 1.754


Total Alkali vs Silica