Sample 50

NavDat sample number 63238 · RHYOLITE

Sample

Sample ID	50
Alternate ID	N-ASW-72
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	A.M. Sarna-Wojcicki
Comment	pumice overlying Cahuilla beds, Salton trough

Location

Latitude	33.3806
Longitude	-115.768
Location	Imperial County
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.9		0	1.8

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SC	3.88		PPM	NAA
MN	403		PPM	NAA
ZN	68		PPM	NAA
RB	137		PPM	NAA
CS	4		PPM	NAA
LA	45.9		PPM	NAA
CE	107		PPM	NAA
ND	51		PPM	NAA
SM	12.18		PPM	NAA
EU	1.76		PPM	NAA
TB	0.4		PPM	NAA
DY	16.7		PPM	NAA
YB	12.1		PPM	NAA
LU	1.72		PPM	NAA
HF	12.8		PPM	NAA
TA	1.75		PPM	NAA
TH	19.1		PPM	NAA
U	5.4		PPM	NAA

References

Sarna-Wojcicki, Andrei M; Bowman, H R; Meyer, C E; Russell, P C; Woodward, M J; McCoy, Gail; Rowe, J J, Jr; Baedecker, P A; Asaro, Frank; Michael, Helen (1984) U. S. Geological Survey Professional Paper, Report: P 1293, 40 pp., 1984