AVO Sample Information

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SAMPLE INFO : 94SJP86

Sample ID:	94SJP86
Station ID:	94SJP86
Latitude:	62.42
Longitude:	-143.1354681
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Flow
Field Lithology:	Andesite

Text Description:
Flow on the east side of the knife edge between Sites 3 and 4 . Fine-grained, holocrystalline, weakly intergranular, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and green alteration. Plagioclase phenocrysts (An28 - An56) are up to 1.3 mm and some have sieve textured cores or intermediate zones; often have rounded, resorbed rims, or tooth-like overgrowth rims; complex zoning is common, occasionally there is convolute zoning. Disequilibrium features are less common in plagioclase phenocrysts less than 0.2 mm. Orthopyroxene phenocrysts are up to 1.0 mm, some have clinopyroxene rims and a few have opaque inclusions. Clinopyroxene phenocrysts are up to 0.5 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
94SJP86	62.42	-143.1354681	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T7N, R12E, S2	Flow on the east side of the knife edge between Sites 3 and 4 . Fine-grained, holocrystalline, weakly intergranular, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and green alteration. Plagioclase phenocrysts (An28 - An56) are up to 1.3 mm and some have sieve textured cores or intermediate zones; often have rounded, resorbed rims, or tooth-like overgrowth rims; complex zoning is common, occasionally there is convolute zoning. Disequilibrium features are less common in plagioclase phenocrysts less than 0.2 mm. Orthopyroxene phenocrysts are up to 1.0 mm, some have clinopyroxene rims and a few have opaque inclusions. Clinopyroxene phenocrysts are up to 0.5 mm.	94SJP86	Lava			Whole-rock	57.99	0.87	17.32	5.84	0.11	4.94	7.17	3.78	1.09	0.17	99.57	55	DCP	6.42	5.84	LOI=0.72	DCP		20.4	541	539															18	132	4.9				3.3	1	18.8	155	85			74	41	60	17					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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