AVO Sample Information

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SAMPLE INFO : 94SJP70A

Sample ID:	94SJP70A
Station ID:	94SJP70A
Latitude:	62.40045741
Longitude:	-143.0407457
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Field Lithology:	Andesite

Text Description:
Approximately 2-4' thick massive zone in an otherwise rubbly and blocky unit from the base of the capping wall-like andesite package at Site 7. Fine grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, alteration, opaque and clinopyroxene. Plagioclase phenocrysts (An30-An58) are up to 1.25 mm and commonly have sieve textured zones, display minor alteration to mica and normal zoning. Olivine phenocrysts are up to 2.0 mm and are mostly altered with only olivine cores preserved. Orthopyroxene phenocrysts are up to 0.55 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
94SJP70A	62.40045741	-143.0407457	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5, T7N, R13E, S8	Approximately 2-4' thick massive zone in an otherwise rubbly and blocky unit from the base of the capping wall-like andesite package at Site 7. Fine grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, alteration, opaque and clinopyroxene. Plagioclase phenocrysts (An30-An58) are up to 1.25 mm and commonly have sieve textured zones, display minor alteration to mica and normal zoning. Olivine phenocrysts are up to 2.0 mm and are mostly altered with only olivine cores preserved. Orthopyroxene phenocrysts are up to 0.55 mm.	94SJP70A	Lava			Whole-rock	57.28	1.03	16.73	6.38	0.11	5.64	6.95	3.78	1.45	0.3	98.85	55	DCP	6.96	6.38	LOI=0.36	DCP		26	505	534															23	154	5.1				6	1.8	21	159	174			130	60	63	17.3					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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