Sample ID: s_LC86-955
Georef Number: 1990-067970
Reference Title: Trace element and isotopic constraints on magmatic evolution at Lassen volcanic center
Reference Author: Bullen, Thomas D; Clynne, Michael A

Location

Sample Detail


Major Data? YES
Trace Data? YES
Isotope Data? YES 		Age: 0.05
Min Age: 0
Max Age: 0.1
Geological Age: QUATERNARY
Age Method: STRAT

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



Rock Data
Reference Technique Material SIO2 TIO2 AL2O3 FE2O3 FEO FEOT MGO CAO NA2O K2O P2O5 MNO ZR BA NB ND143_ND144 PB PB206_PB204 PB207_PB204 PB208_PB204 RB SR SR87_SR86 Y
1990-067970 XRF WHOLE ROCK 68.71 0.45 15.54 0.65 2.35 2.93 1.56 3.64 4.23 2.66 0.14 0.06                        
1990-067970 XRF/INAA WHOLE ROCK                         133 717 9   10.8       73 348   16
1990-067970 TIMS WHOLE ROCK                               0.512796   18.958 15.612 38.63     0.70411  


Total Alkali vs Silica


Element Normalization
  Nb
Pb
Rb
Zr
Ba
Sr
Y
SAMPLE VALUE 9 10.8 73 133 717 348 16
  PPM PPM PPM PPM PPM PPM PPM
REF STANDARD 658 150 0.6 10.5 6600 19.9 4.3
  PPB  PPB  PPM  PPM  PPB  PPM  PPM 






Isotope Chemistry
143Nd/144Nd 206Pb/204Pb 207Pb/204Pb 208Pb/204Pb 87Sr/86Sr
0.512796 18.958 15.612 38.63 0.70411