Sample ID: s_LC84-542A
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 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 68.26 0.44 15.89 0.66 2.4 3 1.67 3.67 4.15 2.61 0.14 0.06                                                
1990-067970 XRF/INAA WHOLE ROCK                         22.7 3.36 0.75 1.6 7.49 10.8 8 157 763 3.95 4.29 9   11.4       67 457   0.73 9.1 2.87 19
1990-067970 TIMS WHOLE ROCK                                                 0.512825   18.952 15.616 38.618     0.70373        


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 9.1 3.95 0.75 9 11.4 67 7.49 3.36 0.73 157 2.87 10.8 763 22.7 457 4.29 19 1.6 8
  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
0.512825 18.952 15.616 38.618 0.70373