Sample s_SR754

NavDat sample number 43397 · ANDESITE

Sample

Sample ID	s_SR754
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	SUB-PUMICEOUS BLOCK-AND-ASH-FLOW CLAST

Location

Latitude	46.87
Longitude	-121.758
Location	Burroughs Mountain Lava Flow
State / province	Washington
Location comment	South Vertical Section

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.496		0.489	0.503

Analyses

Volcanic glass

Item	Value	Std. dev.	Unit	Method
SIO2	74.5		WT%	EPMA
TIO2	0.49		WT%	EPMA
AL2O3	13.3		WT%	EPMA
FEO	1.74		WT%	EPMA
CAO	1.57		WT%	EPMA
MGO	0.3		WT%	EPMA
MNO	0.02		WT%	EPMA
K2O	3.72		WT%	EPMA
NA2O	4.14		WT%	EPMA
P2O5	0.1		WT%	EPMA
CL	0.1		WT%	EPMA
SO3	0.03		WT%	EPMA

References

Stockstill, Karen R; Vogel, Thomas A; Sisson, Thomas W (2003) Origin and emplacement of the andesite of Burroughs Mountain, a zoned, large-volume lava flow at Mount Rainier, Washington, USA. Journal of Volcanology and Geothermal Research. 119; 1-4, Pages 275-296. 2003. doi:10.1016/S0377-0273(02)00358-X