Sample INT-D

NavDat sample number 30678 · GRANITE

Sample

Sample ID	INT-D
Rock name	GRANITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	29.0833
Longitude	-103.963
Location	Sierra Azul; Chihuahua
State / province	CHIHUAHUA

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
30		27	33

Analyses

MINERAL

Item	Value	Std. dev.	Unit	Method
PB206_PB204	18.228			TIMS
PB207_PB204	15.563			TIMS
PB208_PB204	37.995			TIMS

References

James, Eric William; Henry, Christopher D (1993) Southeastern extent of the North American Craton in Texas and northern Chihuahua as revealed by Pb isotopes; with Suppl. Data 9310. Geological Society of America Bulletin, vol.105, no.1, pp.116-126, Jan 1993 doi:10.1130/0016-7606(1993)105<0116:SEOTNA>2.3.CO;2