Sample tc89-21b

NavDat sample number 35804 · PYROCLASTIC-FALL

Sample

Age (Ma)	Error	Min	Max	Geologic age	Dated by
11.81		11.78	11.84

Item	Value	Unit	Method
SIO2	73.4	WT%	EPMA
TIO2	0.25	WT%	EPMA
AL2O3	11.5	WT%	EPMA
FE2O3T	2.15	WT%	EPMA
MNO	0.039	WT%	EPMA
MGO	0.067	WT%	EPMA
CAO	0.68	WT%	EPMA
BAO	0.07	WT%	EPMA
NA2O	2.2	WT%	EPMA
K2O	6.5	WT%	EPMA
CL	0.028	WT%	EPMA
F	0.18	WT%	EPMA
H2O	3.2	WT%	EPMA
TOTAL	100.2	WT%	EPMA
BA	750	PPM	XRF
MN	210	PPM	XRF
NB	43	PPM	XRF
RB	189	PPM	XRF
SR	31	PPM	XRF
TI	1470	PPM	XRF
Y	54	PPM	XRF
ZN	40	PPM	XRF
ZR	400	PPM	XRF
LA	85	PPM	XRF
ND	60	PPM	XRF
TH	28	PPM	XRF
CE	170	PPM	XRF