Sample BARS-2

NavDat sample number 58137 · RHYODACITE

Sample

Sample ID	BARS-2
Rock name	RHYODACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	34.8768
Longitude	-116.89
State / province	CALIFORNIA

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
18		17	20

Analyses

WHOLE ROCK

Item	Value	Std. dev.	Unit	Method
SIO2	70		WT%	INAA
TIO2	0.41		WT%	INAA
AL2O3	15.8		WT%	INAA
NA2O	4		WT%	INAA
K2O	3.36		WT%	INAA
P2O5	0.11		WT%	INAA
BA	830		PPM	INAA
ND	22.35		PPM	INAA
RB	80.6		PPM	INAA
SR	559.9		PPM	INAA
SM	4.249		PPM	INAA
ND143_ND144	0.51242			TIMS
PB206_PB204	19.24			TIMS
PB207_PB204	15.64			TIMS
PB208_PB204	38.84			TIMS
SR87_SR86	0.70694			TIMS

References

Miller, Jonathan S; Glazner, Allen F; Farmer, G Lang; Suayah, IsmailB; Keith, Lori A (2000) A Sr, Nd, and Pb isotopic study of mantle domains and crustalstructure from Miocene volcanic rocks in the Mojave Desert,California. Geological Society of America Bulletin, vol.112, no.8, pp.1264-1279,Aug 2000 doi:10.1130/0016-7606(2000)112<1264:ASNAPI>2.0.CO;2