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SAMPLE INFO : UT1488

Sample ID:	UT1488
Station ID:	UT1488
Latitude:	64.033
Longitude:	-140.817
Datum:	NAD83
Sample Type 1:	Tephra Fall
Field Lithology:	Rhyolite

Text Description:
3-cm-thick-tephra; consists of thin, bubble-wall shards. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon. From Preece et al. (2011): 3.5 cm thick; bubble-wall shards, trace amounts of brown glass; in laminated silt; 2.6 m above contact with underlying gravel; field name 98SJP13a.

References:

Dawson Tephra: a prominent stratigraphic marker of late Wisconsinan age in west-central Yukon, Canada

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
UT1488	64.033	-140.817	Harington, C. R.	1972-01-01	25355 ± 136 known unit; 10281; Age is approximate. Weighted mean of two samples of graminoid leaves from in situ surface below tephra (original dates reported in Froese and others 2006; weighted mean reported in Preece and others 2011).		-24050--	Glacier Creek, Yukon Territory, Canada. Coordinates from Preece et al. (2011). Datum not specified, assumed to be NAD83.	3-cm-thick-tephra; consists of thin, bubble-wall shards. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon. From Preece et al. (2011): 3.5 cm thick; bubble-wall shards, trace amounts of brown glass; in laminated silt; 2.6 m above contact with underlying gravel; field name 98SJP13a.	UT1488	Tephra Fall	Cumulate		Glass		73.95	0.27	13.67	2.03	0.07	0.22	1.23	4.69	3.66			940	EMP		2.03	H2O=3.11; Cl=0.22	EMP	5.1	102	929		22	51.8		22.1	6.6	0.86		1.09					5.3	0.9				9.44	0.65		9.42	3.3	9.11							48						940	INAA

SAMPLE LOCATION

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