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SAMPLE INFO : 94SJP27D

Sample ID:	94SJP27D
Station ID:	94SJP27D
Latitude:	62.20683064
Longitude:	-143.1262907
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Pyroclastic Flow
Field Lithology:	Andesite

Text Description:
A juvenile block from the lahar/pyroclastic flow immediately overlying silicic material from Dome A and underlying flows and agglutinate of unit nA1 at Site 5. Fine-grained, hypocrystalline, intersertal, locally intergranular, seriate porphyritic with a matrix of brown glass, opaque and feldspar microlites. Plagioclase phenocrysts (An28 - An58) are up to 1.75 mm and some have sieve textured cores and/or intermediate zones, complex zoning, and rarely have resorption embayments and/or tooth-like overgrowth rims. Orthopyroxene phenocrysts are up to 1.0 mm and have clinopyroxene rims with occasional sieve textured zones; some anhedral orthopyroxene is intergrown with plagioclase. Clinopyroxene phenocrysts are up to 0.2 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
94SJP27D	62.20683064	-143.1262907	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S26	A juvenile block from the lahar/pyroclastic flow immediately overlying silicic material from Dome A and underlying flows and agglutinate of unit nA1 at Site 5. Fine-grained, hypocrystalline, intersertal, locally intergranular, seriate porphyritic with a matrix of brown glass, opaque and feldspar microlites. Plagioclase phenocrysts (An28 - An58) are up to 1.75 mm and some have sieve textured cores and/or intermediate zones, complex zoning, and rarely have resorption embayments and/or tooth-like overgrowth rims. Orthopyroxene phenocrysts are up to 1.0 mm and have clinopyroxene rims with occasional sieve textured zones; some anhedral orthopyroxene is intergrown with plagioclase. Clinopyroxene phenocrysts are up to 0.2 mm	94SJP27D	Pyroclastic Flow	Bomb		Whole-rock	57.46	0.95	17.6	6	0.12	4.08	7.13	3.81	1.36	0.37	99.29	55	DCP	6.7	6	LOI=0.96	DCP		23	494	516															23	156	4.5				1	1.6	20	168	36			50	46	73	17.8					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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