Impact Structures of the World

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Name	SUVASVESI NORTH
Status	Proven
Country	Finland
Coordinates	Lat. N 62°39' Long.E 28°10'
Diameter km	3.5
Age Ma or date	85.0 ±1.2
Synonyms	Suvasvesi N, Kukkarinselkä
Remarks	This was though to be a twin with Suvasvesi South. Thus it was though its age may be the same. However, recent, yet to be published, study finds out that these two craters are not related (Schmieder et.al. 2014b). There is over 600 Ma between impacts. Different ages was speculated already earlier by others, since there is differences between preservation and geophysics between them. New age from drill core of Suvasvesi North makes it the second youngest impact structure found in Finland so far.
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References
	Buchner 2009b	Buchner E., Schmieder M., Schwarz W.H., Trieloff M., Moilanen J., Öhman T. and Stehlik H., "A Proterozoic 40Ar/39Ar Age for the Suvasvesi South Structure (Finland)", abstract and poster, 72nd Annual Meteoritical Society Meeting (2009)
	Lehtinen 1998	Lehtinen M., "Meteoriittitörmäyskraatterit - maan ja taivaan kohtauspaikat", (in Finnish) in Lehtinen M., Nurmi P., ja Rämö T. (edit.), "3000 vuosimiljoona - Suomen kallioperä" , Suomen geologinen seura (1998)
	Lehtinen 2002	Lehtinen M.,Pesonen L.J., and Moilanen J., ''Impactites from Lake Suvasvesi impact structures, a possible double impact crater in Finland'', 9th ESF Impact Workshop, ''Impacts: A Geological and Astronomical Perspective'', (2002)
	Pesonen 1995	Pesonen L.J., ''The Suvasvesi N structure - a new impact crater in Central-East Finland'', Annales Geophyysicae, Part III, Space and Planetary Sciences, Suppl. III to Vol 3 (1995)
	Pesonen 1996	Pesonen L.J., Lehtinen M., Deutsch, A., Elo S. and Lukkarinen H., "New geophysical and petrographic results of the Suvasvesi N impact structure, Finland", LPSC XXVII, Abstract 1511, (1996)
	Schmieder et.al. 2014b	Martin Schmieder M., Trieloff M., Schwarz W.H., Buchner E. and Jourdan F., Supportive comment on: "Morphology and population of binary asteroid impact craters", by K. Miljkovic, G.S. Collins, S. Mannick and P.A. Bland [Earth Planet. Sci. Lett. 363 (2013) 121-132] - An updated assessment, Earth and Planetary Science Letters 405, 281-284 (2014)
	Werner 2001	Werner S.C., Plado J., Pesonen L.J., and Kuula M., ''The Two Suvasvesi Lakes in Central Finland - A Possible Doublet Impact Structure.'', 64th Annual Meteorological Society Meeting (2001)

SUVASVESI NORTH