Sample 28

NavDat sample number 63219 · PYROCLASTIC-FALL

Sample

Sample ID	28
Alternate ID	N-ASW-41
Rock name	PYROCLASTIC-FALL
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Richard Merriam, J.L. Bischoff
Comment	Upper white ash, Manix basin, Mojave Desert

Location

Latitude	34.9731
Longitude	-116.537
Location	San Bernardino County
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.185		0.1665	0.2035

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SC	3.76		PPM	NAA
MN	346		PPM	NAA
ZN	42		PPM	NAA
RB	192		PPM	NAA
CS	5.8		PPM	NAA
LA	19.5		PPM	NAA
CE	49.9		PPM	NAA
ND	20		PPM	NAA
SM	4.59		PPM	NAA
EU	0.01		PPM	NAA
TB	0.57		PPM	NAA
DY	3.83		PPM	NAA
YB	2.6		PPM	NAA
LU	0.39		PPM	NAA
HF	4.17		PPM	NAA
TA	2.39		PPM	NAA
TH	17.9		PPM	NAA
U	7.38		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