AVO Sample Information

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SAMPLE INFO : 93SJP57

Sample ID:	93SJP57
Station ID:	93SJP57
Latitude:	62.41073613
Longitude:	-143.1590781
Datum:	NAD83
Date Sampled:	1993-00-00
Sample Type 1:	Tephra Fall
Sample Type 2:	Scoria
Field Lithology:	Andesite

Text Description:
Scoria from the spatter ridge at Site 4. Fine-grained, vesicular, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, plagioclase, opaque and alteration in vesicles. Plagioclase phenocrysts (An44 - An53) have two populations: most are 0.25-0.05 mm and a few are zoned; less common are grains 0.6-0.4 mm with sieve textured zones. Olivine phenocrysts are up to 0.9 mm and a few have skeletal habits, and some have opaque inclusions and/or overgrowth rims. 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
93SJP57	62.41073613	-143.1590781	Preece, S. J.	1993-00-00		Skookum Creek		Nabesna B-5; T7N, R12E, S3	Scoria from the spatter ridge at Site 4. Fine-grained, vesicular, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, plagioclase, opaque and alteration in vesicles. Plagioclase phenocrysts (An44 - An53) have two populations: most are 0.25-0.05 mm and a few are zoned; less common are grains 0.6-0.4 mm with sieve textured zones. Olivine phenocrysts are up to 0.9 mm and a few have skeletal habits, and some have opaque inclusions and/or overgrowth rims. Clinopyroxene phenocrysts are up to 0.35 mm.	93SJP57	Tephra Fall	Cumulate		Whole-rock	57.39	0.83	16.53	6.35	0.12	6.39	7.08	3.59	1.22	0.21	100.44	55	DCP	7.03	6.35	LOI=0.31	DCP		21.4	497	655															17	112	4.8				2.5	1.1	20.3	181	206			141	63	71	17.2					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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