Sample ID: DS87-148
Georef Number: 2004-049375
Reference Title: Chemical analyses of Tertiary volcanic rocks, central San Juan Caldera complex, southwestern Colorado.
Reference Author: Lipman-Peter-W

Location Sample Detail Major Data? NO Trace Data? YES Isotope Data? NO

Age: 31.25 Min Age: 29.5 Max Age: 33 Geological Age: OLIGOCENE Age Method: AR_AR Material: IGNEOUS Type: VOLCANIC Composition: FELSIC Rock Name: DACITE

Rock Data

Reference	Technique	Material	ZN	ZR	NB	PB	RB	SR	TH	Y
2003-024675	XRF	WHOLE ROCK	56	274	14	34	199	336	14	29

Element Normalization
pyrolite OIB

	Th	Nb	Pb	Rb	Zr	Sr	Y	Zn
SAMPLE VALUE	14	14	34	199	274	336	29	56
	PPM	PPM	PPM	PPM	PPM	PPM	PPM	PPM
REF STANDARD	79.5	658	150	0.6	10.5	19.9	4.3	55
	PPB	PPB	PPB	PPM	PPM	PPM	PPM	PPM