Sample 41

NavDat sample number 63230 · PYROCLASTIC-FALL

Sample

Age (Ma)	Error	Min	Max	Geologic age	Dated by
2		1.8	2.2

Item	Value	Unit	Method
SIO2	75.97	WT%	EPMA
AL2O3	12.95	WT%	EPMA
FE2O3T	1.69	WT%	EPMA
MGO	0.03	WT%	EPMA
MNO	0.03	WT%	EPMA
CAO	0.61	WT%	EPMA
BAO	0.02	WT%	EPMA
TIO2	0.13	WT%	EPMA
NA2O	4.06	WT%	EPMA
K2O	4.36	WT%	EPMA
CL	0.15	WT%	EPMA
SC	1.77	PPM	NAA
MN	287	PPM	NAA
ZN	106	PPM	NAA
RB	201	PPM	NAA
CS	3.7	PPM	NAA
LA	92	PPM	NAA
CE	181	PPM	NAA
ND	73	PPM	NAA
SM	13.78	PPM	NAA
EU	0.69	PPM	NAA
TB	2.2	PPM	NAA
DY	13.9	PPM	NAA
YB	7.93	PPM	NAA
LU	1.08	PPM	NAA
HF	9.51	PPM	NAA
TA	3.53	PPM	NAA
TH	29.9	PPM	NAA
U	6.24	PPM	NAA