Sample tc89-28a

NavDat sample number 35798 · PYROCLASTIC-FALL

Sample

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

Item	Value	Unit	Method
SIO2	72.4	WT%	EPMA
TIO2	0.31	WT%	EPMA
AL2O3	11.6	WT%	EPMA
FE2O3T	2.23	WT%	EPMA
MNO	0.033	WT%	EPMA
MGO	0.118	WT%	EPMA
CAO	0.76	WT%	EPMA
BAO	0.11	WT%	EPMA
NA2O	2.5	WT%	EPMA
K2O	5.6	WT%	EPMA
CL	0.02	WT%	EPMA
F	0.27	WT%	EPMA
H2O	5	WT%	EPMA
TOTAL	100.8	WT%	EPMA
BA	1090	PPM	XRF
MN	210	PPM	XRF
NB	38	PPM	XRF
RB	181	PPM	XRF
SR	43	PPM	XRF
TI	1900	PPM	XRF
Y	48	PPM	XRF
ZN	46	PPM	XRF
ZR	425	PPM	XRF
LA	80	PPM	XRF
ND	50	PPM	XRF
TH	24	PPM	XRF
CE	140	PPM	XRF