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SAMPLE INFO : 93SJP38A

Sample ID:	93SJP38A
Station ID:	93SJP38A
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 overlying a lahar/pyroclastic flow at Site 5. The very base of the unit nA1. Fine-grained, vesicular, diktytaxitic, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of mesostasis, opaque, clinopyroxene?, orthopyroxene, brown glass and yellow alteration. Plagioclase phenocrysts (An27 - An55, most An38 - An55) are up to 1.5 mm and frequently have sieve textured zones, many have rounded outlines, complex zoning, orthopyroxene inclusions, and include matrix material along the rim. Orthopyroxene phenocrysts are up to 0.85 mm and some have clinopyroxene rims and/or occasionally sieve textured zones.

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
93SJP38A	62.44323839	-143.1246	Preece, S. J.	1993-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S26	Agglutinate from immediately overlying a lahar/pyroclastic flow at Site 5. The very base of the unit nA1. Fine-grained, vesicular, diktytaxitic, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of mesostasis, opaque, clinopyroxene?, orthopyroxene, brown glass and yellow alteration. Plagioclase phenocrysts (An27 - An55, most An38 - An55) are up to 1.5 mm and frequently have sieve textured zones, many have rounded outlines, complex zoning, orthopyroxene inclusions, and include matrix material along the rim. Orthopyroxene phenocrysts are up to 0.85 mm and some have clinopyroxene rims and/or occasionally sieve textured zones.	93SJP38A	Tephra Fall	Cumulate		Whole-rock	57.83	0.88	16.89	6	0.11	5.18	7.27	3.5	1.3	0.2	99.46	55	DCP	6.6	6	LOI=0.83	DCP		23.3	455	534															17	132	5.6				1.6	2.4	19.5	149	121			70	25	62	16.7					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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