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SAMPLE INFO : 94SJP31

Sample ID:	94SJP31
Station ID:	94SJP31
Latitude:	62.42990417
Longitude:	-143.1251914
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Dike
Field Lithology:	Basaltic Andesite

Text Description:
A 2-3' thick, subvertical dike trending N30E and cutting through silicic flows on the west side of Dome A at Site 2. In outcrop it is wall-like and can be followed into the lower part of the andesite package overlying the silicic flows. Fine-grained, seriate, hypocrystalline with a matrix of mesostasis, opaque, feldspar and clinopyroxene. Plagioclase phenocrysts (An22-An44) are 1.75-0.05 mm, some have complex zoning, some have one or more sieve textured zones and/or large melt inclusions. Orthopyroxene phenocrysts are 1.0-0.1 mm and some have clinopyroxene rims. Clinopyroxene phenocrysts are 2.75-0.05 mm and twinning is common. Olivine? phenocrysts are present.

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
94SJP31	62.42990417	-143.1251914	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5, T8N, R12E, S35	A 2-3' thick, subvertical dike trending N30E and cutting through silicic flows on the west side of Dome A at Site 2. In outcrop it is wall-like and can be followed into the lower part of the andesite package overlying the silicic flows. Fine-grained, seriate, hypocrystalline with a matrix of mesostasis, opaque, feldspar and clinopyroxene. Plagioclase phenocrysts (An22-An44) are 1.75-0.05 mm, some have complex zoning, some have one or more sieve textured zones and/or large melt inclusions. Orthopyroxene phenocrysts are 1.0-0.1 mm and some have clinopyroxene rims. Clinopyroxene phenocrysts are 2.75-0.05 mm and twinning is common. Olivine? phenocrysts are present.	94SJP31	Lava			Whole-rock	55.47	0.91	17.6	6.49	0.13	5.36	8.57	3.45	1.14	0.16	98.92	55	DCP	7.08	6.49	LOI=0.7	DCP		21.7	421	707															18	111	2.7				5	1.5	23.7	185	85			54	108	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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