Sample tc89-31a

NavDat sample number 35794 · PYROCLASTIC-FALL

Sample

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

Item	Value	Unit	Method
SIO2	73.1	WT%	EPMA
TIO2	0.21	WT%	EPMA
AL2O3	11.4	WT%	EPMA
FE2O3T	2.1	WT%	EPMA
MNO	0.03	WT%	EPMA
MGO	0.027	WT%	EPMA
CAO	0.65	WT%	EPMA
BAO	0.08	WT%	EPMA
NA2O	2.7	WT%	EPMA
K2O	5.5	WT%	EPMA
CL	0.043	WT%	EPMA
F	0.27	WT%	EPMA
H2O	5.2	WT%	EPMA
TOTAL	101.2	WT%	EPMA
BA	700	PPM	XRF
MN	180	PPM	XRF
NB	38	PPM	XRF
RB	184	PPM	XRF
SR	24	PPM	XRF
TI	1120	PPM	XRF
Y	76	PPM	XRF
ZN	63	PPM	XRF
ZR	350	PPM	XRF
LA	95	PPM	XRF
ND	60	PPM	XRF
TH	30	PPM	XRF
CE	185	PPM	XRF