Sample ID: 618
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? YES
Isotope Data? NO 		Age: 0.992
Min Age: 0.978
Max Age: 1.006
Geological Age: PLEISTOCENE
Age Method: AR_AR

Material: IGNEOUS
Type: VOLCANIC
Composition: FELSIC
Rock Name: RHYODACITE



Rock Data
Reference Technique Material SIO2 TIO2 AL2O3 FEOT MGO CAO NA2O K2O P2O5 MNO LOI ZR BA RB SR Y
2007-002412 XRF WHOLE ROCK 70.8 0.44 17.26 2.13 0.67 0.38 5.72 2.04 0.14 0.05 2.52 227 1010 39 419 19


Total Alkali vs Silica


Element Normalization
  Rb
Zr
Ba
Sr
Y
SAMPLE VALUE 39 227 1010 419 19
  PPM PPM PPM PPM PPM
REF STANDARD 0.6 10.5 6600 19.9 4.3
  PPM  PPM  PPB  PPM  PPM