Sample 20

NavDat sample number 63211 · PYROCLASTIC-FALL

Sample

Sample ID	20
Alternate ID	N-ASW-129
Rock name	PYROCLASTIC-FALL
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	A.M. Sarna-Wojcicki
Comment	correlative ashes of Glass Mountain-G ash bed, Ventura area

Location

Latitude	34.3028
Longitude	-119.271
Location	Ventura County
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
1		0.9	1.1

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SC	3		PPM	NAA
MN	316		PPM	NAA
ZN	111		PPM	NAA
RB	204		PPM	NAA
CS	6		PPM	NAA
LA	22.8		PPM	NAA
CE	57.9		PPM	NAA
ND	24		PPM	NAA
SM	4.33		PPM	NAA
EU	0.02		PPM	NAA
TB	0.69		PPM	NAA
YB	2.9		PPM	NAA
LU	0.4		PPM	NAA
HF	4		PPM	NAA
TA	2.26		PPM	NAA
TH	21.7		PPM	NAA
U	6.6		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