AVO Sample Information

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SAMPLE INFO : 73ARh36

Sample ID:	73ARh36
Station ID:	73ARh36
Latitude:	62.1454
Longitude:	-144.65268
Datum:	NAD83
Date Sampled:	1973-00-00
Sample Type 1:	Lava
Sample Type 2:	Flow

Text Description:
Two-pyroxene andesite and minor two-pyroxene dacite flows erupted from central vent and possibly from local satellitic vents especially along east, southeast, and south flanks of Mount Drum. Flows are 1 to about 20 m thick, have oxidized scoriaceous tops and bottoms, and are locally highly vesicular. Rocks are dark gray to medium brownish gray and are not conspicuously porphyritic. They contain small (1 mm) phenocrysts of plagioclase, hypersthene, augite, olivine, and locally hornblended in variable amounts in an intergranular to intersertal groundmass of feldspar, mafic minerals, and locally minor glass.

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
73ARh36	62.1454	-144.65268	Richter, D. H.	1973-00-00		Drum		Wrangell Lava, Mount Drum, Alaska	Two-pyroxene andesite and minor two-pyroxene dacite flows erupted from central vent and possibly from local satellitic vents especially along east, southeast, and south flanks of Mount Drum. Flows are 1 to about 20 m thick, have oxidized scoriaceous tops and bottoms, and are locally highly vesicular. Rocks are dark gray to medium brownish gray and are not conspicuously porphyritic. They contain small (1 mm) phenocrysts of plagioclase, hypersthene, augite, olivine, and locally hornblended in variable amounts in an intergranular to intersertal groundmass of feldspar, mafic minerals, and locally minor glass.	73ARh36	Lava			Whole-rock	60.51	0.68	16.9	5.19	0.09	4.22	5.83	4.04	1.5	0.26	99.92	55	DCP	5.73	5.19	LOI=0.77	DCP			580	588															15	123							15	137	113			63	54	63						55	DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; XRF: Zr, Ni;

SAMPLE LOCATION

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