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Sample SSP8

NavDat sample number 54571 · TUFF

Sample

Sample IDSSP8
Rock nameTUFF
Rock typeVOLCANIC
CompositionFELSIC
MaterialIGNEOUS
CommentSoda Springs, Sierra County, California [NE 1/4, NE 1/4, SE 1/4, SE 1/4, Sec 34, T 17 N, R 14 E, along Soda Springs Rd. at outlet to Ice Lakes] Stratigraphic section of both the lower and upper phase of the Nine Hill Tuff, lying without intervening sediment on a biotitic unwelded tuff of unknown affinity. Tuff in this section contains granitic lithic fragments up to 1 cm in size, similar to material in the BH samples. Un welded grey-white phenocryst poor, slightly pumiceous lower pahse tuff a few cm above the biotitic tuff, 2 m below a few-cm thick clay zone at the glassy/devitrivified transition.

Location

Latitude39.2942
Longitude-120.382
State / provinceCalifornia
Location commentSoda Springs Road Stratigraphic Section

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
22.78 19.21 26.34

Analyses

Whole rock

ItemValueStd. dev.UnitMethod
SIO273.91WT%XRF
TIO20.28WT%XRF
AL2O313.71WT%XRF
FEO2.05WT%XRF
MNO0.04WT%XRF
MGO-0.43WT%XRF
CAO0.48WT%XRF
NA2O4.25WT%XRF
K2O5.16WT%XRF
P2O5-0.08WT%XRF
ZN115PPMXRF
GA24PPMXRF
RB185PPMXRF
SR48PPMXRF
Y34PPMXRF
ZR349PPMXRF
NB26PPMXRF
CS6PPMXRF
BA1423PPMXRF
PB35PPMXRF
TH28PPMXRF
LA62PPMXRF
CE96PPMXRF
PR24PPMXRF
ND47PPMXRF
SM-8PPMXRF

References