Sample MC-1A

NavDat sample number 57599 · BASALT

Sample

Sample ID	MC-1A
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Comment	[3 - 5 m.y.] These basalts are characterized by their uniformly high Nd values 7.7 to 9.3 and generally low, but variable, 87Sr/86Sr ratios 0.7028 to 0.7040. From the northern half of the volcanic field.

Age (Ma)	Error	Min	Max	Geologic age	Dated by
3.85		3.465	4.235

Item	Value	Unit	Method
SIO2	49.6	WT%	XRF
AL2O3	16.9	WT%	XRF
CAO	7.68	WT%	XRF
MGO	5.18	WT%	XRF
NA2O	4.37	WT%	XRF
K2O	1.71	WT%	XRF
FEOT	10.8	WT%	WET
MNO	0.18	WT%	XRF
TIO2	2.86	WT%	XRF
P2O5	0.74	WT%	XRF
H2O_PLUS	0.49	WT%	WET
H2O_MINUS	0.2	WT%	WET
CO2	0.23	WT%	WET
RB	27	PPM	UNKNOWN
SR	599	PPM	MS
SM	8.55	PPM	UNKNOWN
ND	41.7	PPM	MS
PB	1.6	PPM	UNKNOWN
SR87_SR86	0.70306		MS
ND143_ND144	0.513111		MS
SR87_SR86_INITIAL	0.70305		MS
PB206_PB204	18.999		UNKNOWN
PB207_PB204	15.521		UNKNOWN
PB208_PB204	38.547		UNKNOWN