AVO Sample Information

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SAMPLE INFO : 94SJP42B

Sample ID:	94SJP42B
Station ID:	94SJP42B
Latitude:	62.43407107
Longitude:	-143.1810236
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Flow
Field Lithology:	Andesite

Text Description:
Approximately 15’ thick flow overlying scoria at Site 6. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of mesostasis, opaque and plagioclase. There are blocky shaped xenoliths, 0.75 mm and 0.9 mm in diameter, consisting of light brown glass, feldspar and microlites. Plagioclase phenocrysts (An42 - An58) have two populations, 0.65-0.1 mm that are sieve textured, zoned, and have overgrowth rims, and 0.25-0.05 mm, some with normal zoning. Olivine phenocrysts are 1.6-0.1 mm and a few have skeletal habits; a few have opaque inclusions. Clinopyroxene phenocrysts are up to 0.65 mm, but most are < 0.2 mm.

References:

Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

GEOCHEM DATA

StationID	Latitude	Longitude	Geologist	DateVisited	Age Info	Volcano	Eruption	Location Description	Text Description	Sample ID	Sample Type 1	Sample Type 2	Final Unit	Material	SiO2	TiO2	Al2O3	FeOT	MnO	MgO	CaO	Na2O	K2O	P2O5	Total-majors	REF majors	METH majors	Fe2O3/Fe203T orig	FeO/FeOT orig	Volatiles csv	METH volatiles	Cs	Rb	Ba	Sr	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Y	Zr	Nb	Hf	Ta	Pb	Th	U	Sc	V	Cr	Fe	Co	Ni	Cu	Zn	Ga	Mo	As	Na	K	Ref trace1	METH trace1	Rb	Ba	Sr	La	Ce	Nd	Sm	Eu	Gd	Dy	Er	Yb	Lu	Y	Zr	Nb	Pb	Th	U	Sc	Ti	V	Cr	Ni	Cu	Zn	Ga	Ref trace2	METH trace2	Light csv	Halogen csv	other major csv	other lile csv	other ree csv	other hfse csv	other hpe csv	other tm csv	other misc csv
94SJP42B	62.43407107	-143.1810236	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S34	Approximately 15’ thick flow overlying scoria at Site 6. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of mesostasis, opaque and plagioclase. There are blocky shaped xenoliths, 0.75 mm and 0.9 mm in diameter, consisting of light brown glass, feldspar and microlites. Plagioclase phenocrysts (An42 - An58) have two populations, 0.65-0.1 mm that are sieve textured, zoned, and have overgrowth rims, and 0.25-0.05 mm, some with normal zoning. Olivine phenocrysts are 1.6-0.1 mm and a few have skeletal habits; a few have opaque inclusions. Clinopyroxene phenocrysts are up to 0.65 mm, but most are < 0.2 mm.	94SJP42B	Lava			Whole-rock	57.35	0.82	16.54	6.35	0.11	6.45	7.26	3.5	1.19	0.27	99.71	55	DCP	6.99	6.35	LOI=0.11	DCP		20.8	480	661															18	110	4.2				1.6	2.3	20.2	177	202			151	77	67	17.1					55	XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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