Sample ID: ejr93-532a
Georef Number: 2004-068538
Reference Title: The Cougar Point Tuff; implications for thermochemical zonation andlongevity of high-temperature, large-volume silicic magmas of theMiocene Yellowstone Hotspot
Reference Author: Cathey, Henrietta E; Nash, Barbara P

Location

Sample Detail


Major Data? YES
Trace Data? YES
Isotope Data? NO 		Age: 10.45
Min Age: 9.405
Max Age: 11.495
Geological Age: MIOCENE
Age Method: STRAT

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



Rock Data
Reference Technique Material FE2O3 CAO LA CE SM EU TB YB LU SC TI MN CO ZN ZR BA CS HF NB ND RB SR TA TH U Y
2004-068538 INAA WHOLE ROCK     92 171 12.1 1.29 2.3 6.54 0.88 2.7     2.1       4.2 14   68     2.8 30 8.4  
2004-068538 XRF WHOLE ROCK 2.14 0.67                 1610 240   63 460 1020     44   173 39       59


Total Alkali vs Silica


Element Normalization
  Th
Cs
Eu
Lu
Mn
Nb
Nd
Rb
Sc
Sm
Ta
Tb
Zr
U
Ce
Ba
La
Sr
Hf
Ti
Y
Yb
Co
Zn
SAMPLE VALUE 30 4.2 1.29 0.88 240 44 68 173 2.7 12.1 2.8 2.3 460 8.4 171 1020 92 39 14 1610 59 6.54 2.1 63
  PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM
REF STANDARD 79.5 21 154 67.5 1045 658 1250 0.6 16.2 406 37 99 10.5 20.3 1675 6600 648 19.9 283 1205 4.3 441 105 55
  PPB  PPB  PPB  PPB  PPM  PPB  PPB  PPM  PPM  PPB  PPB  PPB  PPM  PPB  PPB  PPB  PPB  PPM  PPB  PPM  PPM  PPB  PPM  PPM