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SAMPLE INFO : 93SJP32

Sample ID:	93SJP32
Station ID:	93SJP32
Latitude:	62.43073742
Longitude:	-143.0976918
Datum:	NAD83
Date Sampled:	1993-00-00
Sample Type 1:	Lava
Sample Type 2:	Dike
Field Lithology:	Basaltic Andesite

Text Description:
Subvertical dike , about 1 m thick, trending N32E cutting through silicic material of Dome A at Site 2. The dike is cross-cut by dike 93SJP31. Fine-grained, seriate, intersertal, hypocrystalline with a matrix of brown glass, opaque, plagioclase microlites, clinopyroxene and yellow alteration. Plagioclase phenocrysts (An30-An58) are 1.6 - 0.05 mm, and some larger grains have complex zoning, sieve textured intermediate zones; most grains have little zoning. Orthopyroxene phenocrysts are 1.0 - 0.05 mm and have poorly developed clinopyroxene rims. Clinopyroxene phenocrysts are 0.8 - 0.05 mm, and twinning is common. Olivine phenocrysts are 0.9-0.1 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
93SJP32	62.43073742	-143.0976918	Preece, S. J.	1993-00-00		Skookum Creek		Nabesna B-5, T8N, R12E, S36	Subvertical dike , about 1 m thick, trending N32E cutting through silicic material of Dome A at Site 2. The dike is cross-cut by dike 93SJP31. Fine-grained, seriate, intersertal, hypocrystalline with a matrix of brown glass, opaque, plagioclase microlites, clinopyroxene and yellow alteration. Plagioclase phenocrysts (An30-An58) are 1.6 - 0.05 mm, and some larger grains have complex zoning, sieve textured intermediate zones; most grains have little zoning. Orthopyroxene phenocrysts are 1.0 - 0.05 mm and have poorly developed clinopyroxene rims. Clinopyroxene phenocrysts are 0.8 - 0.05 mm, and twinning is common. Olivine phenocrysts are 0.9-0.1 mm.	93SJP32	Lava			Whole-rock	54.3	0.94	17.33	6.49	0.12	5.28	8.93	3.3	1.3	0.2	100.2	55	DCP	7.18	6.49	LOI=1.78	DCP		18.8	403	692															17	111	3.3				4	0.7	23.5	200	107			52	99	65	18.1					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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