Sample 451

NavDat sample number 88029 · RHYODACITE

Sample

Sample ID	451
Rock name	RHYODACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Hildreth and others
Comment	Intrusive-extrusive dome

Location

Latitude	48.8153
Longitude	-121.725
Location	Corax Dome
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
1.109		1.09	1.128

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	71.2		WT%	XRF
TIO2	0.42		WT%	XRF
AL2O3	14.98		WT%	XRF
FEOT	2.71		WT%	XRF
MNO	0.08		WT%	XRF
MGO	1.11		WT%	XRF
CAO	2.75		WT%	XRF
NA2O	3.62		WT%	XRF
K2O	2.58		WT%	XRF
P2O5	0.15		WT%	XRF
LOI	4.73		WT%	XRF
TOTAL	94.37		WT%	XRF
RB	48		PPM	XRF
SR	268		PPM	XRF
Y	17		PPM	XRF
ZR	184		PPM	XRF
BA	1010		PPM	XRF
CE	50		PPM	XRF
V	32		PPM	XRF
ZN	48		PPM	XRF

References

Hildreth, Wes; Lanphere, Marvin A; Champion, Duane E; Fierstein, Judy (2004) Rhyodacites of Kulshan Caldera, north Cascades of Washington;post-caldera lavas that span the Jaramillo. Journal of Volcanology and Geothermal Research, vol.130, no.3-4,pp.227-264, 29 Feb 2004 doi:10.1016/S0377-0273(03)00290-7