Neugrundo krateris

59°20′ š. pl. 23°40′ r. ilg. / 59.333°š. pl. 23.667°r. ilg. / 59.333; 23.667

Neugrundo krateris – povandeninis smūginis krateris, esantis į rytus nuo Estijai priklausančios Osmusaro salos.^[1] Teigiama, kad struktūra gerai išsilaikiusi.^[1] Kraterio skersmuo siekia 20 km, struktūros centre esama vidinio kraterio^[1] (kitur nurodoma, kad kraterio skersmuo – 8 km).^[2] Neugrundo krateris susidarė ankstyvojo kambro periodu, maždaug prieš 535 mln. m., nukritus ~1 km skersmens asteroidui.^[1]

Naujesniais duomenimis, krateris susidarė kambro periodu,^[3] tačiau anksčiau svarstyta, kad Neugrundo krateris galėjo susidaryti per vadinamąjį Ordoviko meteoritų lietų.^[4]^[5]^[6]

Išnašos redaguoti

↑ ^1,0 ^1,1 ^1,2 ^1,3 Suuroja, K., Suuroja, S., 2010. The Neugrund meteorite crater on the seafloor of the Gulf of Finland. Baltica, 23 (1), 47– 58, Vilnius. [1]
↑ Neugrund. Earth Impact Database. Nuoroda tikrinta 2022-08-27.
↑ S. SUUROJA1, K. SUUROJA & T. FLODÉN (2013). A comparative analysis of two Early Palaeozoic marine impact structures in Estonia, Baltic Sea: Neugrund and Kärdla Bulletin of the Geological Society of Finland, Vol. 85, 2013, pp 83–101.
↑ Heck, Philipp; Schmitz, Birger; Baur, Heinrich; Halliday, Alex N.; Wieler, Rainer (15 July 2004). „Fast delivery of meteorites to Earth after a major asteroid collision“. Nature. 430 (6997): 323–325. Bibcode:2004Natur.430..323H. doi:10.1038/nature02736. PMID 15254530. S2CID 4393398.
↑ H. Haack et al. Meteorite, asteroidal, and theoretical constraints on the 500-Ma disruption of the L chondrite parent body, Icarus, Vol. 119, p. 182 (1996).
↑ Korochantseva et al. "L-chondrite asteroid breakup tied to Ordovician meteorite shower by multiple isochron 40Ar-39Ar dating". Meteoritics & Planetary Science 42, 1, pp. 3-150, Jan. 2007.

[Suuroja-1] 1,0 ^1,1 ^1,2 ^1,3 Suuroja, K., Suuroja, S., 2010. The Neugrund meteorite crater on the seafloor of the Gulf of Finland. Baltica, 23 (1), 47– 58, Vilnius. [1]

[2] Neugrund. Earth Impact Database. Nuoroda tikrinta 2022-08-27.

[3] S. SUUROJA1, K. SUUROJA & T. FLODÉN (2013). A comparative analysis of two Early Palaeozoic marine impact structures in Estonia, Baltic Sea: Neugrund and Kärdla Bulletin of the Geological Society of Finland, Vol. 85, 2013, pp 83–101.

[Nature1-4] Heck, Philipp; Schmitz, Birger; Baur, Heinrich; Halliday, Alex N.; Wieler, Rainer (15 July 2004). „Fast delivery of meteorites to Earth after a major asteroid collision“. Nature. 430 (6997): 323–325. Bibcode:2004Natur.430..323H. doi:10.1038/nature02736. PMID 15254530. S2CID 4393398.

[5] H. Haack et al. Meteorite, asteroidal, and theoretical constraints on the 500-Ma disruption of the L chondrite parent body, Icarus, Vol. 119, p. 182 (1996).

[6] Korochantseva et al. "L-chondrite asteroid breakup tied to Ordovician meteorite shower by multiple isochron 40Ar-39Ar dating". Meteoritics & Planetary Science 42, 1, pp. 3-150, Jan. 2007.

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