Sample CoV-150

NavDat sample number 21717 · BASALTIC-ANDESITE

Sample

Sample ID	CoV-150
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	37.25
Longitude	-106.5
State / province	Colorado
Volcanic field	southeast San Juan volcanic field
Formation	Conejos Formation

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
29.1		28.7	29.5

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
LA	35.9		PPM	INAA
CE	75.4		PPM	INAA
ND	36.4		PPM	INAA
SM	6.39		PPM	INAA
EU	1.59		PPM	INAA
TB	0.84		PPM	INAA
YB	2.68		PPM	INAA
LU	0.46		PPM	INAA
HF	5.75		PPM	INAA
TA	0.79		PPM	INAA
TH	8.45		PPM	INAA

References

Colucci, M T; Dungan, M A; Ferguson, K M; Lipman, Peter W; Moorbath, Stephen (1991) Precaldera lavas of the Southeast San Juan volcanic field; parent magmas and crustal interactions. Journal of Geophysical Research, B, Solid Earth and Planets. 96; 8, Pages 13,413-13,434. 1991. . doi:10.1029/91JB00282