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SAMPLE INFO : UA1300

Sample ID:	UA1300
Station ID:	Jensen_Palisades_East
Latitude:	65.1
Longitude:	-153.19997
Datum:	NAD83
Sample Type 1:	Tephra Fall
Field Lithology:	Rhyolite

Text Description:
Three fifteen-cm-thick pods of tephra that occur 22 m above river level, in light-brown silt. The pods steeply dip towards the river and are cut locally by small faults but can be tracked laterally for ~15 m.

References:

Permafrost response to last interglacial warming: field evidence from non-glaciated Yukon and Alaska

The Palisades is a key reference site for the middle Pleistocene of eastern Beringia: new evidence from paleomagnetics and regional tephrostratigraphy

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
Jensen_Palisades_East	65.1	-153.19997	Jensen, B. J. L.					The Palisades are on the south bank of the Yukon River in Nowitna National Wildlife Refuge, ~70 km downstream of Tanana village. Palisades East forms a heavily gullied, cliff-like exposure that is generally ~40-45 m in height, but ranges from ~25 m high at Site E to ~55-60 m high at Site D. It is difficult to access safely, with many near-vertical exposures and overhanging blocks of frozen sediment that frequently break free into the Yukon River. Location imprecisely georeferenced from Figure 1 in Jensen et al. (2013). Multiple sections were mapped and sampled across Palisades East: Site B1, B2, IB4, F, D1, and D2. See Jensen et al. (2013).	Three fifteen-cm-thick pods of tephra that occur 22 m above river level, in light-brown silt. The pods steeply dip towards the river and are cut locally by small faults but can be tracked laterally for ~15 m.	UA1300	Tephra Fall	Cumulate		Glass		75.26	0.3	13.02	1.73	0.06	0.28	1.56	3.81	3.68			8023	EMP		1.73	Cl=0.29; H2O=3.64	EMP

SAMPLE LOCATION

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