Sample BMS131

NavDat sample number 55250 · DACITE

Sample

Sample ID	BMS131
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	27.3
Longitude	-113.3
Location	Tres Virgenes
State / province	Baja California Sur
Country	MEXICO
Location comment	E Chihuahua

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.7		0.63	0.77

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	65.5		WT%	XRF
AL2O3	16.2		WT%	XRF
FE2O3	1.04		WT%	XRF
FEO	3.72		WT%	XRF
MGO	1.69		WT%	XRF
CAO	4.19		WT%	XRF
NA2O	4.41		WT%	XRF
K2O	2.12		WT%	XRF
TIO2	0.9		WT%	XRF
P2O5	0.23		WT%	XRF
MNO	0.08		WT%	XRF
CE	35.4		PPM	UNKNOWN
ND	18.3		PPM	UNKNOWN
SM	3.87		PPM	UNKNOWN
EU	1.04		PPM	UNKNOWN
YB	2.07		PPM	UNKNOWN
RB	41		PPM	XRF
SR	448		PPM	XRF
Y	22		PPM	XRF
NB	9		PPM	XRF
ZR	142		PPM	XRF

References

Cameron, Kenneth L; Cameron, M (1985) Rare earth element, 87Sr/86Sr, and 143Nd/144Nd compositions of Cenozoic orogenic dacites from Baja California, northwestern Mexico, and adjacent West Texas; evidence for the predominance of a subcrustal component. Contributions to Mineralogy and Petrology, vol.91, no.1, pp.1-11, 1985 doi:10.1007/BF00429422