Sample tc89-12

NavDat sample number 35812 · PYROCLASTIC-FALL

Sample

Age (Ma)	Error	Min	Max	Geologic age	Dated by
11.25		8.6	13.9

Item	Value	Unit	Method
SIO2	73.6	WT%	EPMA
TIO2	0.14	WT%	EPMA
AL2O3	11.6	WT%	EPMA
FE2O3T	1.46	WT%	EPMA
MNO	0.028	WT%	EPMA
MGO	0.056	WT%	EPMA
CAO	0.5	WT%	EPMA
BAO	0.01	WT%	EPMA
NA2O	2.2	WT%	EPMA
K2O	6.2	WT%	EPMA
CL	0.071	WT%	EPMA
F	0.33	WT%	EPMA
H2O	6.1	WT%	EPMA
TOTAL	102.1	WT%	EPMA
BA	127	PPM	XRF
MN	145	PPM	XRF
NB	49	PPM	XRF
RB	231	PPM	XRF
SR	7	PPM	XRF
TI	900	PPM	XRF
Y	50	PPM	XRF
ZN	67	PPM	XRF
ZR	205	PPM	XRF
LA	95	PPM	XRF
ND	65	PPM	XRF
TH	36	PPM	XRF
CE	165	PPM	XRF