AVO Sample Information

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SAMPLE INFO : 94SJP70B

Sample ID:	94SJP70B
Station ID:	94SJP70B
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, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (An39-An63) are up to 3.35 mm and often display sieve textured zones. Orthopyroxene phenocrysts are up to 0.7 mm and a few are sieve textured. Two different altered phases are present, one is now red to orange alteration, while the other is chlorite alteration.

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
94SJP70B	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, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (An39-An63) are up to 3.35 mm and often display sieve textured zones. Orthopyroxene phenocrysts are up to 0.7 mm and a few are sieve textured. Two different altered phases are present, one is now red to orange alteration, while the other is chlorite alteration.	94SJP70B	Lava			Whole-rock	56.68	1.04	16.96	6.98	0.24	3.81	7.33	3.49	1.69	0.17	99.76	55	DCP	7.68	6.98	LOI=1.59	DCP		27	561	550															23	156	5.3				4.6	2.9	19.5	158	170			101	53	68	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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