AVO Sample Information

Alaska Volcano Observatory

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SAMPLE INFO : 74AMm89

Sample ID:	74AMm89
Station ID:	74AMm89
Latitude:	62.006
Longitude:	-144.61498
Datum:	NAD83
Date Sampled:	1974-00-00
Sample Type 1:	Lava
Sample Type 2:	Flow
Field Lithology:	Dacite

Text Description:
Thin to thick flows of dacite and andesite (?). Visited only massive two-pyroxene dacite flow of probable Mount Wrangell affinity, exposed in tributary of Dadina River (loc. 29, sec. 26, T. 3 N., R. 4 E.) Rock is medium gray and locally vesicular and contains phenocrysts (2-5 mm) of abundant plagioclase and hypersthene and rare to common augite and olivine in an intersertal to intergranular groundmass.

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
74AMm89	62.006	-144.61498	Miller, T. P.	1974-00-00		Drum		Wrangell Lava, Mount Drum, Alaska	Thin to thick flows of dacite and andesite (?). Visited only massive two-pyroxene dacite flow of probable Mount Wrangell affinity, exposed in tributary of Dadina River (loc. 29, sec. 26, T. 3 N., R. 4 E.) Rock is medium gray and locally vesicular and contains phenocrysts (2-5 mm) of abundant plagioclase and hypersthene and rare to common augite and olivine in an intersertal to intergranular groundmass.	74AMm89	Lava			Whole-rock	61.3	0.91	16.13	5.25	0.09	3.54	5.7	3.78	2.34	0.19	100.25	55	DCP	5.81	5.25	LOI=0.74	DCP			654	557															21	212							16	171	65			47	58	66						55	DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; XRF: Zr, Ni;

SAMPLE LOCATION

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