AVO Sample Information

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SAMPLE INFO : 95SJP5

Sample ID:	95SJP5
Station ID:	95SJP5
Latitude:	62.40184642
Longitude:	-143.0499124
Datum:	NAD83
Date Sampled:	1995-00-00
Sample Type 1:	Tephra Fall
Sample Type 2:	Agglutinate
Field Lithology:	Andesite

Text Description:
Agglutinated wall approximately 15’ above a thick pyroclastic flow at Site 7. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene, clinopyroxene and minor alteration lining vesicles. Plagioclase phenocrysts (An36 - An62) are up to 2.88 mm and sieve textured zones are common; normal zoning is common and some grains have oscillatory zoning. An altered phase, now composed of olivine?, of iddingsite, serpentine ± opaque is present. Orthopyroxene phenocrysts are up to 0.98 mm, and occasionally have sieve textured zones. Clinopyroxene phenocrysts are up to 0.15 mm. Opaque phenocrysts are up to 0.1 mm, but most are matrix sized.

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
95SJP5	62.40184642	-143.0499124	Preece, S. J.	1995-00-00		Skookum Creek		Nabesna B-5; T7N, R13E, S8	Agglutinated wall approximately 15’ above a thick pyroclastic flow at Site 7. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene, clinopyroxene and minor alteration lining vesicles. Plagioclase phenocrysts (An36 - An62) are up to 2.88 mm and sieve textured zones are common; normal zoning is common and some grains have oscillatory zoning. An altered phase, now composed of olivine?, of iddingsite, serpentine ± opaque is present. Orthopyroxene phenocrysts are up to 0.98 mm, and occasionally have sieve textured zones. Clinopyroxene phenocrysts are up to 0.15 mm. Opaque phenocrysts are up to 0.1 mm, but most are matrix sized.	95SJP5	Tephra Fall	Cumulate		Whole-rock	57.93	1.03	16.86	6.53	0.13	4.32	7.09	3.52	1.33	0.25	100.64	55	DCP	7.25	6.53	LOI=1.02	DCP		27	514	565															23	153	5.2				4.3	1.8	21.2	162	167			121	59	68	17.6					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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