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SAMPLE INFO : 93SJP31

Sample ID:	93SJP31
Station ID:	93SJP31
Latitude:	62.43018181
Longitude:	-143.0940806
Datum:	NAD83
Date Sampled:	1993-00-00
Sample Type 1:	Lava
Sample Type 2:	Dike
Field Lithology:	Andesite

Text Description:
Approximately 3’ thick dike, trending N65°E, that forms a wall-like outcrop on the top of Site 2. This dike cross-cuts dike 93SJP32 and intrudes silicic material of Dome A. Fine-grained, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and red alteration patches. Plagioclase phenocrysts (An33 - An60) are up to 3.4 mm and have sieve textured cores, rare resorption embayments, complex zoning with prussian blue extinction, melt inclusions, and a few have orthopyroxene inclusions. Orthopyroxene phenocrysts are 0.9-0.15 mm and some have clinopyroxene rims and large melt inclusions. Clinopyroxene phenocrysts are up to 0.8 mm and some are twinned.

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
93SJP31	62.43018181	-143.0940806	Preece, S. J.	1993-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S36	Approximately 3’ thick dike, trending N65°E, that forms a wall-like outcrop on the top of Site 2. This dike cross-cuts dike 93SJP32 and intrudes silicic material of Dome A. Fine-grained, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and red alteration patches. Plagioclase phenocrysts (An33 - An60) are up to 3.4 mm and have sieve textured cores, rare resorption embayments, complex zoning with prussian blue extinction, melt inclusions, and a few have orthopyroxene inclusions. Orthopyroxene phenocrysts are 0.9-0.15 mm and some have clinopyroxene rims and large melt inclusions. Clinopyroxene phenocrysts are up to 0.8 mm and some are twinned.	93SJP31	Lava			Whole-rock	57.9	1.13	17.23	6.4	0.13	3.8	6.7	4.11	1.42	0.27	100.31	55	DCP	7.08	6.4	LOI=0.9	DCP		22.2	454	493															24	158	5.9				2.2	1.7	19.2	167	47			32	42	73	18.6					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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