Sample ID: s_LC80-436B
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: 0.54 Min Age: 0.47 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	CO	ZR	BA	NB	ND143_ND144	PB	PB206_PB204	PB207_PB204	PB208_PB204	RB	SR	SR87_SR86	Y
1990-067970	XRF	WHOLE ROCK	55.28	0.66	15.82	1.5	5.4	6.76	7.99	9.23	2.96	0.84	0.16	0.12
1990-067970	XRF/INAA	WHOLE ROCK													33	99	272	2		4.3				16	653		19
1990-067970	TIMS	WHOLE ROCK																	0.512891		18.868	15.592	38.469			0.70325

Element Normalization
pyrolite OIB

	Nb	Pb	Rb	Zr	Ba	Sr	Y	Co
SAMPLE VALUE	2	4.3	16	99	272	653	19	33
	PPM	PPM	PPM	PPM	PPM	PPM	PPM	PPM
REF STANDARD	658	150	0.6	10.5	6600	19.9	4.3	105
	PPB	PPB	PPM	PPM	PPB	PPM	PPM	PPM

Isotope Chemistry

143Nd/144Nd	206Pb/204Pb	207Pb/204Pb	208Pb/204Pb	87Sr/86Sr
0.512891	18.868	15.592	38.469	0.70325