Sample Older Tuffs Unit A

NavDat sample number 17023 · TUFF

Sample

Sample ID	Older Tuffs Unit A
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Averages determined by analysis of pumice, vitrophyres, and devitrified interiors of ash flow tuffs and lava flows; additional data from Quinlivan and Byers 1977, Lipman et al. 1966, Spengler et al. 1981, Zielinski 1983, Scott and Castellanos 1984, and Broxton et al. 1986

Latitude	36.9
Longitude	-116.5
Location	S side of TM-OV
State / province	Nevada
Volcanic field	Timber Mountain- Oasis Valley Caldera Complex

Age (Ma)	Error	Min	Max	Geologic age	Dated by
14.3		12.87	15.73

Item	Value	Unit	Method
SIO2	75.3	WT%	XRF
TIO2	0.19	WT%	XRF
AL2O3	13.5	WT%	XRF
FEOT	1.3	WT%	XRF
MNO	0.04	WT%	XRF
P2O5	-0.05	WT%	XRF
SC	1.7	PPM	INAA
V	19	PPM	INAA
CO	1.1	PPM	INAA
ZR	210	PPM	INAA
BA	864	PPM	INAA
HF	6.4	PPM	INAA
TA	1.8	PPM	INAA
TH	19	PPM	INAA
LA	67	PPM	INAA
CE	113	PPM	INAA
SM	4.7	PPM	INAA
EU	0.82	PPM	INAA
DY	4.4	PPM	INAA
YB	3.3	PPM	INAA
LU	0.48	PPM	INAA