Sample CH97-17

NavDat sample number 49981 · ANDESITE

Sample

Sample ID	CH97-17
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	29.6527
Longitude	-108.192
State / province	CHIHUAHUA

Age

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

Analyses

WHOLE ROCK

Item	Value	Std. dev.	Unit	Method
ND143_ND144	0.512574			MS
SR87_SR86	0.705669			MS
PB206_PB204	18.593			MS
PB207_PB204	15.574			MS
PB208_PB204	38.504			MS

References

Housh, Todd B; McDowell, Fred W (2005) Isotope provinces in Laramide and mid-Tertiary igneous rocks of northwestern Mexico (Chihuahua and Sonora) and their relation to basement configuration. Special Paper - Geological Society of America, vol.393, pp.671-692, 2005 doi:10.1130/2005.2393(25)