Sample L1157A

NavDat sample number 60194 · DACITE

Sample

Sample ID	L1157A
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	44.6424
Longitude	-122.331
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
21		17	25

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	65.72		WT%	XRF
TIO2	0.93		WT%	XRF
AL2O3	15.13		WT%	XRF
FEOT	6.2		WT%	XRF
MNO	0.11		WT%	XRF
MGO	1.4		WT%	XRF
CAO	3.98		WT%	XRF
NA2O	3.88		WT%	XRF
K2O	2.49		WT%	XRF
P2O5	0.16		WT%	XRF
TOTAL	99.19		WT%	XRF
LOI	3.72		WT%	XRF

References

du, Bray Edward A; John, David A; Sherrod, David R; Evarts, Russell C; Conrey, Richard M; Lexa, Jaroslav (2006) Geochemical database for volcanic rocks of the western Cascades, Washington, Oregon, and California. U. S. Geological Survey Data Series. 2006.