AVO Sample Information

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SAMPLE INFO : 81ARj 11a

Sample ID:	81ARj 11a
Station ID:	81ARj 11a
Latitude:	57.702612478371
Longitude:	-156.41542477181
Datum:	NAD83
Date Sampled:	1981-01-01
Sample Type 1:	Lahar
Field Lithology:	Dacite

Text Description:
Porphyritic plagioclase-orthopyroxene dacite (s; high-silica andesite G). Glassy groundmass contains randomly oriented phenocrysts of orthopyroxene and larger phenocrysts of plagioclase (AN 64-68). Some parts of the thin section have glomeroporphyritic pyroxene and plagioclase; bulk of the phenocrysts are individual crystals. Plagioclase is weakly zoned.

References:

Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska

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
81ARj 11a	57.702612478371	-156.41542477181	Riehle, J. R.	1981-01-01		Ugashik caldera		Ugashik C-2, Ugashik caldera	Porphyritic plagioclase-orthopyroxene dacite (s; high-silica andesite G). Glassy groundmass contains randomly oriented phenocrysts of orthopyroxene and larger phenocrysts of plagioclase (AN 64-68). Some parts of the thin section have glomeroporphyritic pyroxene and plagioclase; bulk of the phenocrysts are individual crystals. Plagioclase is weakly zoned.	81ARj 11a	Lahar	Block		Whole-rock	61.2	0.61	17.8	5.7	0.13	2.83	6.83	3.41	1.4	0.16	97.61	4092	XRF	4.78	1.2

SAMPLE LOCATION

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