AVO Sample Information

Alaska Volcano Observatory

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SAMPLE INFO : 286

Sample ID:	286
Station ID:	286
Latitude:	58.3
Longitude:	-154.9
Datum:	NAD83
Sample Type 1:	Lava
Sample Type 2:	Dike

Text Description:
From a dike about 30 feet thick, forming a noticeable 'spire' jutting up from sediments on top of the ridge east of Knife Peak Volcano. The rock is greenish gray feldspar-hornblende andesite-porphyry. Relations in the vicinity suggest that it is an offshoot from a large laccolith to the north.

References:

The Katmai magmatic province

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	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
286	58.3	-154.9	Fenner, C. N.					Top of the ridge east of Knife Peak Volcano (Griggs)	From a dike about 30 feet thick, forming a noticeable 'spire' jutting up from sediments on top of the ridge east of Knife Peak Volcano. The rock is greenish gray feldspar-hornblende andesite-porphyry. Relations in the vicinity suggest that it is an offshoot from a large laccolith to the north.	286	Lava			Whole-rock	58.75	0.54	16.2	5.5	0.08	3.8	6.23	3.45	1.29	0.35	100.15	1176	NN	3.07	2.74	H2OP=2.42; H2OM=0.81; Cl=0.05; CO2=0.37	NN																																								1176

SAMPLE LOCATION

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