Sample 687-4

NavDat sample number 63283 · TUFF

Sample

Sample ID	687-4
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	36.9598
Longitude	-117.456
Location	Cottonwood Mtns
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
22.9		22.56	23.24

Analyses

Minerial

Item	Value	Std. dev.	Unit	Method
SIO2	65.94		WT%	UNKNOWN
AL2O3	18.55		WT%	UNKNOWN
FEO	0.1		WT%	UNKNOWN
CAO	0.18		WT%	UNKNOWN
NA2O	3.87		WT%	UNKNOWN
K2O	11.24		WT%	UNKNOWN
TOTAL	99.88		WT%	UNKNOWN

References

Snow, J Kent; Lux, Daniel R (1999) Tectono-sequence stratigraphy of Tertiary rocks in the Cottonwood Mountains and northern Death Valley area, California and Nevada. Special Paper - Geological Society of America. 333; Pages 17-64. 1999.