AVO Sample Information

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SAMPLE INFO : 94SJP37

Sample ID:	94SJP37
Station ID:	94SJP37
Latitude:	62.427404
Longitude:	-143.1238023
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Flow
Field Lithology:	Andesite

Text Description:
Flow underlying 94SJP36 at Site 3. The outcrop is blocky to platy, 30’ thick with a 15’ vesicular zone. Fine grained, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of brown glass with microlites, mesostasis, opaque and alteration. Plagioclase phenocrysts (An40 - An59) are up to 2.2 mm and some larger grains have sieve textured cores or intermediate zones, some have complex zoning, and a few have orthopyroxene inclusions. Orthopyroxene phenocrysts are up to 0.75 mm and many have clinopyroxene rims (some grains are now mostly clinopyroxene), some have opaque inclusions. Clinopyroxene phenocrysts are up to 0.35 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
94SJP37	62.427404	-143.1238023	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S35	Flow underlying 94SJP36 at Site 3. The outcrop is blocky to platy, 30’ thick with a 15’ vesicular zone. Fine grained, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of brown glass with microlites, mesostasis, opaque and alteration. Plagioclase phenocrysts (An40 - An59) are up to 2.2 mm and some larger grains have sieve textured cores or intermediate zones, some have complex zoning, and a few have orthopyroxene inclusions. Orthopyroxene phenocrysts are up to 0.75 mm and many have clinopyroxene rims (some grains are now mostly clinopyroxene), some have opaque inclusions. Clinopyroxene phenocrysts are up to 0.35 mm.	94SJP37	Lava			Whole-rock	57.87	0.9	17.23	5.88	0.09	4.97	7.36	3.7	1.2	0.26	99.65	55	DCP	6.47	5.88	LOI=0.51	DCP		20.9	482	544															14	123	3.3				4	1.2	19	179	114			75	57	60	17.3					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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