Sample 31

NavDat sample number 63222 · PYROCLASTIC-FALL

Sample

Sample ID	31
Alternate ID	N-ASW-42
Rock name	PYROCLASTIC-FALL
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Richard Merriam, J.L. Bischoff
Comment	Middle white ash, Manix basin, Mojave Desert

Location

Latitude	34.9739
Longitude	-116.536
Location	San Bernardino County
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
2		1.9	2.1

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SC	4.95		PPM	NAA
MN	696		PPM	NAA
ZN	51		PPM	NAA
RB	315		PPM	NAA
CS	10.8		PPM	NAA
LA	17.3		PPM	NAA
CE	51.5		PPM	NAA
ND	21		PPM	NAA
SM	6.44		PPM	NAA
EU	0		PPM	NAA
TB	1		PPM	NAA
DY	6.7		PPM	NAA
YB	4.46		PPM	NAA
LU	0.64		PPM	NAA
HF	5.85		PPM	NAA
TA	4.67		PPM	NAA
TH	30.2		PPM	NAA
U	13.78		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