AVO Sample Information

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
Halfway_House	64.735	-148.4594	Preece, S. J.		106000 ± 10000 TL; 7423; Age is approximate. Average age of two infrared stimulated luminescence ages on loess bracketing VT tephra at Halfway House.			Halfway House site: a 12-m-thick section of the Gold Hill Loess located on top of a rounded bedrock hill along the north side of the Parks Highway, ~50 km west of Fairbanks, Alaska. The exposure was created during construction of the George Parks Highway in the 1960s and is mostly comprised of the Goldstream Formation. Location coordinates from Preece and others (2011); coordinates vary slightly from those reported in Jensen and others (2011). Datum not specified, assumed to be NAD83.	Within inorganic silt, ~5.75 m above the base of the exposure. Occurs above Old Crow tephra and a well-developed paleosol. Halfway House (HH) tephra is 25 cm below VT, while 40 cm above VT tephra a 50-cm-thick second paleosol is present. Discrete bed that can be followed continuously across the exposure. Bed is up to 3 cm thick, with diffuse contacts. Glass morphology comprised of bubble-walled and tricuspate shards with some pumice.	UA1425	Tephra Fall	Cumulate		Glass		70.51	0.58	14.83	3.17	0.1	0.69	2.47	4.57	2.92			10781	EMP		3.17	Cl=0.16; H2O=2.52	EMP
Halfway_House	64.735	-148.4594	Preece, S. J.		106000 ± 10000 TL; 7423; Age is approximate. Average age of two infrared stimulated luminescence ages on loess bracketing VT tephra at Halfway House.			Halfway House site: a 12-m-thick section of the Gold Hill Loess located on top of a rounded bedrock hill along the north side of the Parks Highway, ~50 km west of Fairbanks, Alaska. The exposure was created during construction of the George Parks Highway in the 1960s and is mostly comprised of the Goldstream Formation. Location coordinates from Preece and others (2011); coordinates vary slightly from those reported in Jensen and others (2011). Datum not specified, assumed to be NAD83.	Within inorganic silt, ~5.75 m above the base of the exposure. Occurs above Old Crow tephra and a well-developed paleosol. Halfway House (HH) tephra is 25 cm below VT, while 40 cm above VT tephra a 50-cm-thick second paleosol is present. Discrete bed that can be followed continuously across the exposure. Bed is up to 3 cm thick, with diffuse contacts. Glass morphology comprised of bubble-walled and tricuspate shards with some pumice.	UA1425	Tephra Fall	Cumulate		Glass		70.51	0.58	14.83	3.17	0.1	0.69	2.47	4.57	2.92			7423	EMP		3.17	Cl=0.16; H2O=2.52	EMP

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