Sample ID: s_LC84-600
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: 0.54
Min Age: 0.47
Max Age: 0.6
Geological Age: PLEISTOCENE
Age Method: STRAT

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



Rock Data
Reference Technique Material SIO2 TIO2 AL2O3 FE2O3 FEO FEOT MGO CAO NA2O K2O P2O5 MNO LA SM EU YB SC CR CO ZR BA CS HF NB ND143_ND144 PB PB206_PB204 PB207_PB204 PB208_PB204 RB SR SR87_SR86 TA TH U Y
1990-067970 XRF WHOLE ROCK 67.98 0.79 15.96 0.69 2.48 3.1 1.01 3.24 4.49 3 0.27 0.05                                                
1990-067970 XRF/INAA WHOLE ROCK                         34.4 6.67 1.38 3.2 11.1 3.2 4.38 221 886 2.17 5.75 9   14.6       81 341   0.94 10.9 3.58 31
1990-067970 TIMS WHOLE ROCK                                                 0.512793   18.982 15.627 38.683     0.70416        


Total Alkali vs Silica


Element Normalization
  Th
Cs
Eu
Nb
Pb
Rb
Sc
Sm
Ta
Zr
U
Cr
Ba
La
Sr
Hf
Y
Yb
Co
SAMPLE VALUE 10.9 2.17 1.38 9 14.6 81 11.1 6.67 0.94 221 3.58 3.2 886 34.4 341 5.75 31 3.2 4.38
  PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM
REF STANDARD 79.5 21 154 658 150 0.6 16.2 406 37 10.5 20.3 2625 6600 648 19.9 283 4.3 441 105
  PPB  PPB  PPB  PPB  PPB  PPM  PPM  PPB  PPB  PPM  PPB  PPB  PPB  PPB  PPM  PPB  PPM  PPB  PPM 






Isotope Chemistry
143Nd/144Nd 206Pb/204Pb 207Pb/204Pb 208Pb/204Pb 87Sr/86Sr
0.512793 18.982 15.627 38.683 0.70416