Sample 3S157

NavDat sample number 29943 · BASALT

Sample

Sample ID	3S157
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Collected by	Brittain
Comment	Flow

Location

Latitude	44.3181
Longitude	-121.747
Location	North Sister
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.4		0.2	0.6

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	53.6		WT%	XRF
TIO2	1.07		WT%	XRF
AL2O3	18.4		WT%	XRF
FEOT	7.49		WT%	XRF
MNO	0.14		WT%	XRF
MGO	5.2		WT%	XRF
CAO	9		WT%	XRF
NA2O	3.77		WT%	XRF
K2O	0.62		WT%	XRF
P2O5	0.18		WT%	XRF
TOTAL	99.47		WT%	XRF
RB	7		PPM	INAA
BA	276		PPM	INAA
SR	550		PPM	INAA
CO	68		PPM	INAA
NI	72		PPM	INAA
CR	93		PPM	INAA
ZN	76		PPM	INAA

References

Hill, Brittain Eames (1991) Petrogenesis of compositionally distinct silicic volcanoes in theThree Sisters region of the Oregon Cascade Range; the effects ofcrustal extension on the development of continental arc silicicmagmatism.