AVO Sample Information

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SAMPLE INFO : 94SJP100

Sample ID:	94SJP100
Station ID:	94SJP100
Latitude:	62.35239812
Longitude:	-143.1982409
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Dome
Field Lithology:	Dacite

Text Description:
Rubbly outcrop of Dome G at Site 13. Locally reddish color around where the geology map indicates a vent (Lowe et al., 1982). Fine grained, holocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque, feldspar, orthopyroxene? and sparse zircon?. Plagioclase phenocrysts are up to 2.55 mm and both normal and oscillatory zoning are present; grains occasionally display repeated episodes of resorption and overgrowth. Opaque phenocrysts are up to 0.45 mm. Orthopyroxene phenocrysts are up to 0.98 and contain opaque inclusions. Clinopyroxene phenocrysts are up to 0.55 mm. Amphibole phenocrysts are up to 0.6 mm and most have dehydrated to opaque � pyroxene, but a few cores are present. 90.0% matrix, 9.4% plagioclase, 0.3% orthopyroxene, 0.2% opaque, 0.1% altered phase.

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
94SJP100	62.35239812	-143.1982409	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T7N, R12E, S28		94SJP100	Lava			Whole-rock	68.24	0.42	16.82	3.01	0.16	1	2.66	5.46	1.95	0.22	99.79	55	DCP	3.32	3.01	LOI=0.05	DCP		27	688	444	27.7	59.8		29.2	5.2	1.7	5		4.8		2.7		3	0.5	29	359	11.9				4.7	0.8	3.7	7	bdl			2	3	79	17.2					55	XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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