AVO Sample Information

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SAMPLE INFO : 95SJP4C

Sample ID:	95SJP4C
Station ID:	95SJP4C
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 carapace of dome C unit at Site 7. Fine grained, holocrystalline, porphyritic with a matrix of plagioclase, opaque and alteration (reddish color from oxidation). Plagioclase phenocrysts (An37 - An48) are up to 1.1 mm and strongly zoned. Opaque phenocrysts are up to 0.25 mm for primary phenocrysts; much of the opaque is secondary oxidation of orthopyroxene needles. Orthopyroxene phenocrysts are up to 0.7 mm and most is oxidized to opaque.

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
95SJP4C	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 carapace of dome C unit at Site 7. Fine grained, holocrystalline, porphyritic with a matrix of plagioclase, opaque and alteration (reddish color from oxidation). Plagioclase phenocrysts (An37 - An48) are up to 1.1 mm and strongly zoned. Opaque phenocrysts are up to 0.25 mm for primary phenocrysts; much of the opaque is secondary oxidation of orthopyroxene needles. Orthopyroxene phenocrysts are up to 0.7 mm and most is oxidized to opaque.	95SJP4C	Lava			Whole-rock	70.64	0.27	16	2.56	0.11	0.34	2.15	5.31	2.28	0.07	100.32	55	DCP	2.85	2.56	LOI=0.28	DCP		32	836	334															17	276	7.1				5	2.4	1.7	3	bdl			1	3	61	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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