AVO Sample Information

Alaska Volcano Observatory

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SAMPLE INFO : 73ARh34

Sample ID:	73ARh34
Station ID:	73ARh34
Latitude:	62.1184
Longitude:	-144.53888
Datum:	NAD83
Date Sampled:	1973-00-00
Sample Type 1:	Lava
Sample Type 2:	Dike
Field Lithology:	Dacite

Text Description:
Dacite Dikes. Generally associated with rhyolite and rhyodacite domes (Qrd, Qrdd) of first cycle of activity, but some (secs. 14 and 15, T. 3 N., R. 4 E.) may be younger and related to Snider Peak activity. All dikes sampled are medium to dark gray and sparsely porphyritic with small phenocrysts of plagioclase, hornblende, and locally rare biotite and hypersthene in a dense pilotaxitic to trachytic or dark cryptocrystalline 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
73ARh34	62.1184	-144.53888	Richter, D. H.	1973-00-00		Drum		Wrangell Lava, Mount Drum, Alaska	Dacite Dikes. Generally associated with rhyolite and rhyodacite domes (Qrd, Qrdd) of first cycle of activity, but some (secs. 14 and 15, T. 3 N., R. 4 E.) may be younger and related to Snider Peak activity. All dikes sampled are medium to dark gray and sparsely porphyritic with small phenocrysts of plagioclase, hornblende, and locally rare biotite and hypersthene in a dense pilotaxitic to trachytic or dark cryptocrystalline groundmass.	73ARh34	Lava			Whole-rock	61.8	0.54	18.59	4.66	0.08	2.65	5.79	4.52	1.19	0.16	99.7	55	DCP	5.13	4.66	LOI=0.01	DCP			496	667															11	93							11.7	105	20			21	49	64						55	DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; XRF: Zr, Ni;

SAMPLE LOCATION

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