Sample s_SS-75

NavDat sample number 41012 · RHYODACITE

Sample

Sample ID	s_SS-75
Rock name	RHYODACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	LAVA

Location

Latitude	44.1
Longitude	-121.75
Location	CASCADES / HIGH CASCADES / NORTHWESTERN CASCADES / SOUTH SISTER / PACIFIC OCEAN
State / province	OREGON

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0		0	0.01	HOLOCENE

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
LA	23.18		PPM	INAA
CE	41.66		PPM	INAA
SM	3.11		PPM	INAA
EU	0.62		PPM	INAA
TB	0.35		PPM	INAA
DY	2.97		PPM	INAA
YB	1.7		PPM	INAA
LU	0.27		PPM	INAA
SC	3.34		PPM	INAA
V	18.88		PPM	INAA
CR	2.14		PPM	INAA
CO	4.51		PPM	INAA
RB	75.7		PPM	INAA
CS	3.04		PPM	INAA
HF	4.78		PPM	INAA
TA	0.9		PPM	INAA
TH	8.35		PPM	INAA
U	3.68		PPM	INAA

References

Brophy, J G; Dreher, S T (2000) The origin of composition gaps at South Sister Volcano, central Oregon; implications for fractional crystallization processes beneath active calc-alkaline volcanoes. Journal of Volcanology and Geothermal Research. 102; 3-4, Pages 287-307. 2000. doi:10.1016/S0377-0273(00)00192-X