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SAMPLE INFO : UA355

Sample ID:	UA355
Station ID:	Cripple_Sump
Latitude:	64.8
Longitude:	-147.99997
Datum:	NAD83
Sample Type 1:	Tephra Fall
Field Lithology:	Rhyolite

Text Description:
1- to 2-cm-thick pink tephra that occurred in a green silt slump one meter above the Fox Gravel, near the base of the Gold Hill Loess; sampled by Pewe in 1949, exposure is currently under water. Sample contains aggregates of fine-grained, colourless and brown glass shards poorly cemented by silica. Highly vesicular pumice is common with elongate vesicles, however, poorly vesicular pumice and bubblewall glass shards also common. Mineral component includes feldspar and FeTi oxides with accessory amounts of clinopyroxene, orthopyroxene, hornblende, and apatite.

References:

Tephrostratigraphy of the late Cenozoic Gold Hill loess, Fairbanks area, Alaska

Tephrochronology of late Cenozoic loess at Fairbanks, central Alaska

The Dawson Cut Forest Bed in the Fairbanks area, Alaska, is about two million years old

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

Update on the late Cenozoic tephrochronology of the Gold Hill loess at Fairbanks, Alaska, and correlation with the Klondike goldfields in the Yukon

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
Cripple_Sump	64.8	-147.99997	Preece, S. J.					Exposure of Gold Hill Loess in the Ester mining region, an upland remnant created by mining activity, Ester, Alaska. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999).	1- to 2-cm-thick pink tephra that occurred in a green silt slump one meter above the Fox Gravel, near the base of the Gold Hill Loess; sampled by Pewe in 1949, exposure is currently under water. Sample contains aggregates of fine-grained, colourless and brown glass shards poorly cemented by silica. Highly vesicular pumice is common with elongate vesicles, however, poorly vesicular pumice and bubblewall glass shards also common. Mineral component includes feldspar and FeTi oxides with accessory amounts of clinopyroxene, orthopyroxene, hornblende, and apatite.	UA355	Tephra Fall	Cumulate		Glass		74.73	0.32	12.64	2	Reported standard deviation of zero. 0.06	Reported standard deviation of zero. 0.34	1.44	2.96	4.98			3621	EMP		2	Cl=0.53; H2O=6.15	EMP

SAMPLE LOCATION

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