Sample tc89-21a

NavDat sample number 35805 · PYROCLASTIC-FALL

Sample

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

Item	Value	Unit	Method
SIO2	72.7	WT%	EPMA
TIO2	0.25	WT%	EPMA
AL2O3	11.3	WT%	EPMA
FE2O3T	2.1	WT%	EPMA
MNO	0.03	WT%	EPMA
MGO	0.058	WT%	EPMA
CAO	0.61	WT%	EPMA
BAO	0.09	WT%	EPMA
NA2O	2.1	WT%	EPMA
K2O	6.3	WT%	EPMA
CL	0.031	WT%	EPMA
F	0.28	WT%	EPMA
H2O	5.1	WT%	EPMA
TOTAL	100.8	WT%	EPMA
BA	750	PPM	XRF
MN	225	PPM	XRF
NB	43	PPM	XRF
RB	190	PPM	XRF
SR	30	PPM	XRF
TI	1340	PPM	XRF
Y	54	PPM	XRF
ZN	61	PPM	XRF
ZR	370	PPM	XRF
LA	75	PPM	XRF
ND	60	PPM	XRF
TH	29	PPM	XRF
CE	155	PPM	XRF