AVO Sample Information

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SAMPLE INFO : UT1718

Sample ID:	UT1718
Station ID:	NK29A
Latitude:	68.14027
Longitude:	-158.667
Datum:	NAD83
Sample Type 1:	Tephra Fall

Text Description:
3 cm thick. Small pods of tephra occur over 1.1 m laterally within dark brown, organic-rich silty flood-plain deposits. Locally, the organic-rich silt is capped with a peaty bed and grey silt. Tephra is cut by an ice wedge cast and is located 16 m above river level (Elias et al. 1999).

References:

A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory

Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6

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	Coeff	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
NK29A	68.14027	-158.667	Unknown, Unknown		124000 ± 10000 known unit; 10271; Age is approximate. Revised glass fission-track age with re-calibration; four Old Crow Tephra sample glass fission-track ages (UT1434, UT613, UT501, UT613).			Noatak River, Alaska. Datum not specified, assumed to be NAD83.	3 cm thick. Small pods of tephra occur over 1.1 m laterally within dark brown, organic-rich silty flood-plain deposits. Locally, the organic-rich silt is capped with a peaty bed and grey silt. Tephra is cut by an ice wedge cast and is located 16 m above river level (Elias et al. 1999).	UT1718	Tephra Fall	Cumulate		Glass		75.44	0.31	13	1.71	0.05	0.29	1.48	3.73	3.72			10271	EMP		1.71	Cl=0.29; H2O=4.59	EMP

SAMPLE LOCATION

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