Sample 01-LT-04

NavDat sample number 130806 · ANDESITE

Sample

Sample ID	01-LT-04
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Collected by	Cousens and others
Comment	hornblende andesite

Location

Latitude	39.2916
Longitude	-120.033
Location	Martis Peak
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
4.75		3.5	6

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	56.46		WT%	XRF
TIO2	0.71		WT%	XRF
AL2O3	18.24		WT%	XRF
FE2O3	7.23		WT%	XRF
MNO	0.12		WT%	XRF
MGO	3.74		WT%	XRF
CAO	6.92		WT%	XRF
NA2O	3.79		WT%	XRF
K2O	1.39		WT%	XRF
P2O5	0.23		WT%	XRF
LOI	0.9		WT%	XRF
V	172		PPM	XRF
CR	26		PPM	XRF
NI	20		PPM	XRF
RB	28		PPM	XRF
SR	712		PPM	XRF
Y	18		PPM	XRF
ZR	105		PPM	XRF
BA	788		PPM	XRF
LA	11.63		PPM	ICPMS
ND	12.57		PPM	ICPMS
YB	1.21		PPM	ICPMS
NB	4.66		PPM	ICPMS
CS	1.13		PPM	ICPMS
HF	2.82		PPM	ICPMS
TH	2.58		PPM	ICPMS
PB	7.2		PPM	MS-ID

References

Cousens, Brian; Prytulak, Julie; Henry, Christopher; Alcazar, Al; Brownrigg, Tim (2008) Geology, geochronology, and geochemistry of the Miocene-Pliocene ancestral Cascades Arc, northern Sierra Nevada, California and Nevada;the roles of the upper mantle, subducting slab, and the Sierra Nevadalithosphere. Geosphere, vol. 4, no. 5, pp.829-853, Oct 2008 doi:10.1130/GES00166.1