Sample ID: brv93-429
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: 11.8
Min Age: 10.62
Max Age: 12.98
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     85 151 10.1 1.16 2.1 5.41 0.74 3.8     3       4 12   58     3.2 32 8.7  
2004-068538 XRF WHOLE ROCK 1.66 0.55                 1510 205   33 365 740     40   199 32       50


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 32 4 1.16 0.74 205 40 58 199 3.8 10.1 3.2 2.1 365 8.7 151 740 85 32 12 1510 50 5.41 3 33
  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