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SAMPLE INFO : 93SJP38B

Sample ID:	93SJP38B
Station ID:	93SJP38B
Latitude:	62.44323839
Longitude:	-143.1246
Datum:	NAD83
Date Sampled:	1993-00-00
Sample Type 1:	Tephra Fall
Sample Type 2:	Agglutinate
Field Lithology:	Andesite

Text Description:
Agglutinate from immediately above the lahar/pyroclastic flow at Site 5. The very base of the unit nA1. Fine-grained, vesicular, intersertal, hypocrystalline, seriate matrix of dark brown glass and skeletal plagioclase. There are rare granular masses of pyroxene. Plagioclase phenocrysts (An27 - An59) are up to 1.5 mm and some have complex zoning and/or sieve textured zones, many have tooth-like overgrowths, some have rounded rims. Orthopyroxene phenocrysts are up to 1.25 mm and occasionally have clinopyroxene rims or rarely have brown glass embayments, some are sieve textured, and some appear to have grown around or partially around plagioclase grains. Clinopyroxene phenocrysts are up to 0.3 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
93SJP38B	62.44323839	-143.1246	Preece, S. J.	1993-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S26	Agglutinate from immediately above the lahar/pyroclastic flow at Site 5. The very base of the unit nA1. Fine-grained, vesicular, intersertal, hypocrystalline, seriate matrix of dark brown glass and skeletal plagioclase. There are rare granular masses of pyroxene. Plagioclase phenocrysts (An27 - An59) are up to 1.5 mm and some have complex zoning and/or sieve textured zones, many have tooth-like overgrowths, some have rounded rims. Orthopyroxene phenocrysts are up to 1.25 mm and occasionally have clinopyroxene rims or rarely have brown glass embayments, some are sieve textured, and some appear to have grown around or partially around plagioclase grains. Clinopyroxene phenocrysts are up to 0.3 mm.	93SJP38B	Tephra Fall	Cumulate		Whole-rock	57.6	0.9	17.2	5.97	0.11	4.99	7.32	3.6	1.26	0.22	100.58	55	DCP	6.63	5.97	LOI=0.76	DCP		23.5	466	542															17	129	4.9				3.1	2	18.8	151	127			65	41	61	16.8					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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