AVO Sample Information

StationID	Latitude	Longitude	Geologist	Age Info	Location Description	Text Description	Sample ID	Sample Type 1	Sample Type 2	Material	SiO2	TiO2	Al2O3	FeOT	MnO	MgO	CaO	Na2O	K2O	Total-majors	REF majors	METH majors	FeO/FeOT orig	Volatiles csv	METH volatiles	Cs	Rb	Ba	Sr	La	Ce	Nd	Sm	Eu	Tb	Yb	Lu	Hf	Ta	Th	U	Sc	Co	Zn	Ref trace1	METH trace1
Gold_Hill_II	64.9	-147.89997	Preece, S. J.	2020000 ± 140000 glass - FT; 996; Age is approximate. Weighted mean average of two dates obtained on sample UT497. See Preece and others (1999) for methods.	Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; located approximately 400 m to the northeast of station Preece_1999_Gold_Hill_I. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999).	Semi-lithified tephra located in the basal part of the Gold Hill Loess, 11 m above the Cripple Gravel. It has been deformed by solifluction into pods, up to 5 cm thick and 38 cm long, that are spread out vertically over a 20-25 cm interval and interbedded with massive, grey (2.5Y6/3) and oxidized (2.5Y6/4) silt. All contacts with the surrounding loess are sharp in most places and wispy in a few. There is often a darker pink rim, a few mm to less than a mm thick, along the silt-tephra contact of the pods. In some places, the tephra has been oxidized and is rusty along the silt-tephra contact. The larger pods are sometimes separated into smaller pods by wisps or mm thick silt layers, and some of the pods have very convoluted outlines while others are more regular ovals. It can be traced continuously from stations Gold_Hill_II to Gold_Hill_IV. 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.	UT497	Tephra Fall	Cumulate	Glass	74.36	0.37	12.96	2.33	Reported analytical value of zero. Reported standard deviation value of zero. 0	0.26	1.43	3.53	4.36	93.33	56	EMP	2.33	Cl=0.6	EMP	4.18	138	1629	299	33.65	73.8	33.6	6.91	1.05	0.87	3.02	0.53	8.31	1.09	14.61	4.97	5.34	3.78	72	56	INAA
Gold_Hill_II	64.9	-147.89997	Preece, S. J.	2020000 ± 140000 glass - FT; 996; Age is approximate. Weighted mean average of two dates obtained on sample UT497. See Preece and others (1999) for methods.	Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; located approximately 400 m to the northeast of station Preece_1999_Gold_Hill_I. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999).	Semi-lithified tephra located in the basal part of the Gold Hill Loess, 11 m above the Cripple Gravel. It has been deformed by solifluction into pods, up to 5 cm thick and 38 cm long, that are spread out vertically over a 20-25 cm interval and interbedded with massive, grey (2.5Y6/3) and oxidized (2.5Y6/4) silt. All contacts with the surrounding loess are sharp in most places and wispy in a few. There is often a darker pink rim, a few mm to less than a mm thick, along the silt-tephra contact of the pods. In some places, the tephra has been oxidized and is rusty along the silt-tephra contact. The larger pods are sometimes separated into smaller pods by wisps or mm thick silt layers, and some of the pods have very convoluted outlines while others are more regular ovals. It can be traced continuously from stations Gold_Hill_II to Gold_Hill_IV. 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.	UT497	Tephra Fall	Cumulate	Glass	74.1	0.37	12.92	2.32	Reported standard deviation of zero 0.06	Reported standard deviation of zero 0.34	1.42	3.52	4.35		3621	EMP	2.32	Cl=0.6; H2O=6.34	EMP	4.18		1630		33.65	73.8	33.6	6.91	1.05	0.87	3.02	0.53	8.31	1.09	14.61	4.97	5.34		70	996	INAA
Gold_Hill_II	64.9	-147.89997	Preece, S. J.	2020000 ± 140000 glass - FT; 996; Age is approximate. Weighted mean average of two dates obtained on sample UT497. See Preece and others (1999) for methods.	Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; located approximately 400 m to the northeast of station Preece_1999_Gold_Hill_I. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999).	Semi-lithified tephra located in the basal part of the Gold Hill Loess, 11 m above the Cripple Gravel. It has been deformed by solifluction into pods, up to 5 cm thick and 38 cm long, that are spread out vertically over a 20-25 cm interval and interbedded with massive, grey (2.5Y6/3) and oxidized (2.5Y6/4) silt. All contacts with the surrounding loess are sharp in most places and wispy in a few. There is often a darker pink rim, a few mm to less than a mm thick, along the silt-tephra contact of the pods. In some places, the tephra has been oxidized and is rusty along the silt-tephra contact. The larger pods are sometimes separated into smaller pods by wisps or mm thick silt layers, and some of the pods have very convoluted outlines while others are more regular ovals. It can be traced continuously from stations Gold_Hill_II to Gold_Hill_IV. 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.	UT497	Tephra Fall	Cumulate	Glass	73.04	0.37	13.02	2.25	0.06	0.33	1.5	3.61	5.12		4792	EMP	2.25	Cl=0.7; H2O=4.13	EMP