Sample s_MJ-243

NavDat sample number 42260 · ANDESITE

Sample

Sample ID	s_MJ-243
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	44.692
Longitude	-121.8
Location	CASCADES / HIGH CASCADES / NORTHWESTERN CASCADES / MOUNT ST. JEFFERSON / PACIFIC OCEAN
State / province	OREGON

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.9		0	1.8

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SR87_SR86	0.70342			TIMS
PB206_PB204	18.694			TIMS
PB207_PB204	15.546			TIMS
PB208_PB204	38.29			TIMS

References

Conrey, Richard M; Hooper, Peter R; Larson, Peter B; Chesley, John; Ruiz, Joaquin (2001) Trace element and isotopic evidence for two types of crustal melting beneath a High Cascade volcanic center, Mt. Jefferson, Oregon. Contributions to Mineralogy and Petrology. 141; 6, Pages 710-732. 2001.