AVO Sample Information

Alaska Volcano Observatory

You are here: Home > Samples > 81ARj 38a

SAMPLE INFO : 81ARj 38a

Sample ID:	81ARj 38a
Station ID:	81ARj 38
Latitude:	57.2
Longitude:	-156.777
Datum:	NAD83
Date Sampled:	1981-01-01
Sample Type 1:	Other
Sample Type 2:	Pyroclast
Field Lithology:	Dacite

Text Description:
Fine-grained, flow-foliated, porphyritic dacite clast in ash flow. Contains phenocrysts of zoned plagioclase (An 60) and quartz and lithic fragments. Lithic fragments are plagioclase and clinopyroxene or only plagioclase; no mafic minerals are present among the phenocrysts or in the groundmass. Aggregates of very fine grained opaque minerals in pseudomorphs after hornblende (?)

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 38	57.2	-156.777	Riehle, J. R.	1981-01-01		Kialagvik		Ugashik A-3, Mount Kialagvik	Fine-grained, flow-foliated, porphyritic dacite clast in ash flow. Contains phenocrysts of zoned plagioclase (An 60) and quartz and lithic fragments. Lithic fragments are plagioclase and clinopyroxene or only plagioclase; no mafic minerals are present among the phenocrysts or in the groundmass. Aggregates of very fine grained opaque minerals in pseudomorphs after hornblende (?)	81ARj 38a	Other	Quenched Inclusion		Whole-rock	64	0.56	16.4	4.91	0.1	2.66	5.78	3.12	2.12	0.15	98.54	4092	XRF	3.99	1.23

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA

URL: www.avo.alaska.edu/samples/sample_info.php
Page modified: August 1, 2017 15:29
Contact Information: AVO Web Team

@alaska_avo

alaska.avo

Receive volcano updates by email: USGS VNS

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.