AVO Sample Information

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SAMPLE INFO : 93SJP58

Sample ID:	93SJP58
Station ID:	93SJP58
Latitude:	62.41129172
Longitude:	-143.1632447
Datum:	NAD83
Date Sampled:	1993-00-00
Sample Type 1:	Lava
Sample Type 2:	Flow
Field Lithology:	Andesite

Text Description:
Platy flow within the spatter ridge at Site 4. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (An34 - An58) have two populations: most are 0.25-0.05 mm, euhedral to subhedral; less abundant are 0.65 - 0.35 mm, subhedral to anhedral grains, a few are sieve textured. Olivine phenocryst are up to 2.8 mm and a few have skeletal habits or opaque inclusions; at least one grain has grown around a rounded pyroxene core. One clinopyroxene phenocryst, 0.35 mm, was observed. Opaque phenocrysts are up to 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
93SJP58	62.41129172	-143.1632447	Preece, S. J.	1993-00-00		Skookum Creek		Nabesna B-5; T7N, R12E, S3	Platy flow within the spatter ridge at Site 4. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (An34 - An58) have two populations: most are 0.25-0.05 mm, euhedral to subhedral; less abundant are 0.65 - 0.35 mm, subhedral to anhedral grains, a few are sieve textured. Olivine phenocryst are up to 2.8 mm and a few have skeletal habits or opaque inclusions; at least one grain has grown around a rounded pyroxene core. One clinopyroxene phenocryst, 0.35 mm, was observed. Opaque phenocrysts are up to 0.1 mm.	93SJP58	Lava			Whole-rock	57.5	0.8	16.47	6.4	0.12	6.76	7.14	3.5	1.22	0.22	99.98	55	DCP	7.1	6.4	LOI=-0.21	DCP		20.5	497	667															17	107	4.4				4.2	0.5	21	187	231			160	63	69	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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