Sample ID: s_LC85-715
Georef Number: 1990-067970
Reference Title: Trace element and isotopic constraints on magmatic evolution at Lassen volcanic center
Reference Author: Bullen, Thomas D; Clynne, Michael A

Location Sample Detail Major Data? YES Trace Data? YES Isotope Data? YES

Age: 0.3 Min Age: 0 Max Age: 0.6 Geological Age: PLEISTOCENE Age Method: STRAT Material: IGNEOUS Type: VOLCANIC Composition: INTERMEDIATE Rock Name: ANDESITE

Rock Data

Reference	Technique	Material	SIO2	TIO2	AL2O3	FE2O3	FEO	FEOT	MGO	CAO	NA2O	K2O	P2O5	MNO	ZR	BA	NB	ND143_ND144	PB	PB206_PB204	PB207_PB204	PB208_PB204	RB	SR	SR87_SR86	Y
1990-067970	XRF	WHOLE ROCK	53.61	0.69	18.91	1.7	6.13	7.67	5.08	10.16	2.71	0.77	0.08	0.14
1990-067970	XRF/INAA	WHOLE ROCK													68	172	3		2.6				12	585		15
1990-067970	TIMS	WHOLE ROCK																0.512828		18.886	15.597	38.522			0.70372

Element Normalization
pyrolite OIB

	Nb	Pb	Rb	Zr	Ba	Sr	Y
SAMPLE VALUE	3	2.6	12	68	172	585	15
	PPM	PPM	PPM	PPM	PPM	PPM	PPM
REF STANDARD	658	150	0.6	10.5	6600	19.9	4.3
	PPB	PPB	PPM	PPM	PPB	PPM	PPM

Isotope Chemistry

143Nd/144Nd	206Pb/204Pb	207Pb/204Pb	208Pb/204Pb	87Sr/86Sr
0.512828	18.886	15.597	38.522	0.70372