AVO Sample Information

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SAMPLE INFO : 95SJP4B

Sample ID:	95SJP4B
Station ID:	95SJP4B
Latitude:	62.40240202
Longitude:	-143.0499124
Datum:	NAD83
Date Sampled:	1995-00-00
Sample Type 1:	Lava
Sample Type 2:	Dome
Field Lithology:	Rhyolite

Text Description:
A silicic block from a baked portion of the dome C carapace unit at Site 7. Fine grained, holocrystalline, porphyritic with a matrix of plagioclase, opaque, apatite?, orthopyroxene and alteration. Plagioclase phenocrysts are up to 1.8 mm and often are strongly zoned (both normal and oscillatory). Orthopyroxene phenocrysts are up to 0.75 mm; many grains have a brown coating (oxidation?) and are intensely pleochroic. Opaque phenocrysts are up to 0.3 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
95SJP4B	62.40240202	-143.0499124	Preece, S. J.	1995-00-00		Skookum Creek		Nabesna B-5; T7N, R13E, S8	A silicic block from a baked portion of the dome C carapace unit at Site 7. Fine grained, holocrystalline, porphyritic with a matrix of plagioclase, opaque, apatite?, orthopyroxene and alteration. Plagioclase phenocrysts are up to 1.8 mm and often are strongly zoned (both normal and oscillatory). Orthopyroxene phenocrysts are up to 0.75 mm; many grains have a brown coating (oxidation?) and are intensely pleochroic. Opaque phenocrysts are up to 0.3 mm.	95SJP4B	Lava			Whole-rock	69.03	0.29	15.97	2.53	0.1	0.56	2.19	4.82	2.64	0.03	100.27	55	DCP	2.81	2.53	LOI=1.83	DCP		43	761	333															18	289	8				6	2.8	1.9	9	bdl			1	3	62	16.4					55	XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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