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SAMPLE INFO : Ahklun Mountains-LS-4.7ka-Tephra_average

Sample ID:	Ahklun Mountains-LS-4.7ka-Tephra_average
Station ID:	Ahklun_Mountains_Regional_Tephra
Latitude:	59.6
Longitude:	-160.39998
Datum:	NAD83
Sample Type 1:	Tephra Fall

Text Description:
This thin bed (UA 1965; 0.2cm thick) is known only from Lone Spruce Pond in the Ahklun Mountains. The tephra bed is composed predominantly of pumice with large vesicles, and some blocky pumice; tricuspate and bubble-wall shards are present, but in lower abundance than in Tephra A from the Ahklun Mountains.

References:

Late Quaternary tephrostratigraphy, Ahklun Mountains, SW 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	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
Ahklun_Mountains_Regional_Tephra	59.6	-160.39998	Kaufman, D. S.		4745 ± 133 14C AMS; 7993; Age is approximate. Date derived from age model (using AMS dates) of Lone Spruce Pond, in Kaufman and others (2012).			Ahklun Mountains, southwest Alaska; glass compositions are averages calculated from analyses of multiple correlated tephra present in lacustrine cores from the area. Individual sample IDs (analyses of which contribute to the average tephra bed composition) are noted in the sample descriptions.	This thin bed (UA 1965; 0.2cm thick) is known only from Lone Spruce Pond in the Ahklun Mountains. The tephra bed is composed predominantly of pumice with large vesicles, and some blocky pumice; tricuspate and bubble-wall shards are present, but in lower abundance than in Tephra A from the Ahklun Mountains.	Ahklun Mountains-LS-4.7ka-Tephra_average	Tephra Fall	Cumulate		Glass		71.54	0.44	14.85	2.62	0.13	0.42	1.64	4.95	3.23			7993	EMP		2.62	Cl=0.18; H2O=3.41	EMP

SAMPLE LOCATION

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