Sample tc89-27c

NavDat sample number 35800 · PYROCLASTIC-FALL

Sample

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

Item	Value	Unit	Method
SIO2	73	WT%	EPMA
TIO2	0.2	WT%	EPMA
AL2O3	11.4	WT%	EPMA
FE2O3T	1.92	WT%	EPMA
MNO	0.03	WT%	EPMA
MGO	0.05	WT%	EPMA
CAO	0.58	WT%	EPMA
BAO	0.02	WT%	EPMA
NA2O	2.2	WT%	EPMA
K2O	5.9	WT%	EPMA
CL	0.04	WT%	EPMA
F	0.21	WT%	EPMA
H2O	5	WT%	EPMA
TOTAL	100.5	WT%	EPMA
BA	470	PPM	XRF
MN	180	PPM	XRF
NB	40	PPM	XRF
RB	194	PPM	XRF
SR	18	PPM	XRF
TI	1190	PPM	XRF
Y	52	PPM	XRF
ZN	59	PPM	XRF
ZR	340	PPM	XRF
LA	90	PPM	XRF
ND	65	PPM	XRF
TH	31	PPM	XRF
CE	165	PPM	XRF