Sample A158

NavDat sample number 16608 · PYROCLASTIC FALL

Sample

Sample ID	A158
Rock name	PYROCLASTIC FALL
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Upper Member

Location

Latitude	35
Longitude	-115.25
Location	Wild Horse Mesa Tuff
State / province	California
Volcanic field	Woods Mountains Volcanic Center

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
15.8		14.22	17.38

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	72.6		WT%	ICPAES
TIO2	0.23		WT%	ICPAES
AL2O3	13.4		WT%	ICPAES
FEO	1.4		WT%	ICPAES
MNO	0.12		WT%	ICPAES
MGO	0.38		WT%	ICPAES
CAO	0.42		WT%	ICPAES
NA2O	2.6		WT%	ICPAES
K2O	5.5		WT%	ICPAES
SR	37		PPM	ICPAES
BA	18		PPM	ICPAES
LA	50		PPM	ICPAES
Y	68		PPM	ICPAES
ZR	408		PPM	ICPAES

References

McCurry, Michael (1988) Geology and petrology of the Woods Mountains volcanic center, southeastern California; implications for the genesis of peralkaline rhyolite ash flow tuffs. Journal of Geophysical Research, B, Solid Earth and Planets, vol.93, no.12, pp.14,835-14,855, Dec 1988 doi:10.1029/JB093iB12p14835