Sample ID: DS87-012
Georef Number: 2004-049375
Reference Title: Chemical analyses of Tertiary volcanic rocks, central San Juan Caldera complex, southwestern Colorado.
Reference Author: Lipman-Peter-W

Location

Sample Detail


Major Data? YES
Trace Data? YES
Isotope Data? NO 		Age: 28.5
Min Age: 28.4
Max Age: 28.6
Geological Age: OLIGOCENE
Age Method: U-PB CONCORDIA

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



Rock Data
Reference Technique Material SIO2 TIO2 AL2O3 FE2O3 MGO CAO NA2O K2O P2O5 MNO LOI LA CE ZN ZR BA NB ND PB RB SR TH Y
1988-011206 XRF WHOLE ROCK 65.34 0.5487568 15.954595 4.8473516 1.5141622 3.699027 3.8006487 3.6075675 0.22356758 0.10162162 1.59                        
2003-024675 XRF WHOLE ROCK                       47 88 83 183 1079 17 48 16 99 544 11 20


Total Alkali vs Silica


Element Normalization
  Th
Nb
Nd
Pb
Rb
Zr
Ce
Ba
La
Sr
Y
Zn
SAMPLE VALUE 11 17 48 16 99 183 88 1079 47 544 20 83
  PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM
REF STANDARD 79.5 658 1250 150 0.6 10.5 1675 6600 648 19.9 4.3 55
  PPB  PPB  PPB  PPB  PPM  PPM  PPB  PPB  PPB  PPM  PPM  PPM