Sample 48

NavDat sample number 63236 · PYROCLASTIC FALL

Sample

Sample ID	48
Alternate ID	N-ASW-122
Rock name	PYROCLASTIC FALL
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	W.A. Duffield, C.R. Bacon
Comment	air-fall pumice of the Coso area

Age (Ma)	Error	Min	Max	Geologic age	Dated by
2.99		2.79	3.19

Item	Value	Unit	Method
SIO2	75.68	WT%	EPMA
AL2O3	13.35	WT%	EPMA
FE2O3T	1.32	WT%	EPMA
MGO	0.19	WT%	EPMA
MNO	0.02	WT%	EPMA
CAO	1.19	WT%	EPMA
BAO	0.12	WT%	EPMA
TIO2	0.14	WT%	EPMA
NA2O	3.53	WT%	EPMA
K2O	4.44	WT%	EPMA
CL	0.03	WT%	EPMA
SC	0.91	PPM	NAA
MN	281	PPM	NAA
ZN	41	PPM	NAA
RB	101	PPM	NAA
CS	2.8	PPM	NAA
LA	24.4	PPM	NAA
CE	45.9	PPM	NAA
ND	13	PPM	NAA
SM	1.87	PPM	NAA
EU	0.41	PPM	NAA
TB	0.15	PPM	NAA
DY	1.25	PPM	NAA
YB	0.85	PPM	NAA
LU	0.13	PPM	NAA
HF	3.81	PPM	NAA
TA	0.74	PPM	NAA
TH	8.2	PPM	NAA
U	2.48	PPM	NAA