Sample SO 28

NavDat sample number 50028

Sample

Sample ID	SO 28
Rock type	VOLCANIC
Material	IGNEOUS
Comment	MAFIC LAVA

Location

Latitude	28.6841
Longitude	-110.864
State / province	SONORA

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
23.5		21.15	25.85

Analyses

WHOLE ROCK

Item	Value	Std. dev.	Unit	Method
ND143_ND144	0.512443			MS
SR87_SR86	0.705707			MS
PB206_PB204	18.874			MS
PB207_PB204	15.635			MS
PB208_PB204	38.645			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)