Selenyj-Haj crater

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Zelenyj Haj Crater (Ukraine)
Selenyj-Haj crater
Selenyj-Haj crater
Situation in Ukraine

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The Zelenyj-Haj Crater ( Ukrainian Зеленогайський кратер ) is a fossil impact crater in the Ukrainian Oblast of Kirovohrad .

Not too much is known about the crater. It is named after the village of Selenyj Haj (Ukrainian: Зелений Гай , in the mostly English-language research literature Zeleny Gai ), near which it is located. However, the fact that there are several villages with this name in Kirovohrad Oblast apparently means that different sources contain different information about its exact location. Accordingly, the position can only be narrowed down to the region between Dolynska , Kropywnyzkyj , Oleksandrija and the southeastern bank of the Kremenchuk reservoir . *

Different information is also given about the diameter of the crater. Among other things, 0.85 km, 1.4 km, 2.5 km and 3.5 km are mentioned. Its age is estimated to be a maximum of 140 and a minimum of 60 million years ( Cretaceous ). The impact occurred in the crystalline basement of the Ukrainian Shield . It is not known which category of cosmic objects the projectile belonged to.

Today nothing is visible of the impact structure ( Russian called астроблем Astroblem ) due to natural geological processes on the earth's surface. The structure was initially noticed as a negative anomaly in gravity field measurements. Material unearthed during the subsequent exploratory drilling contained shocked minerals and melt glasses, typical signs of the impact of a cosmic object.

Remarks

* 48 ° 42 'N, 32 ° 54' E after several works by Richard Grieve; 48 ° 4 'N, 32 ° 45' E according to the Earth Impact Database; 48.89 ° N, 32.8 ° E or 48 ° 53 ′ 24 ″ N, 32 ° 48 ′ E according to Anna Michejewa, this position being represented by the drawing of the Selenyj-Haj crater in a map by Valter et al. (1984) and the description of the location "30 km to the east" in relation to theBowtyschka craterin Gurov et al. (2006) is supported.

See also

Individual evidence

  1. ^ JS Trefil, DM Raup: Crater Taphonomy and Bombardment Rates in the Phanerozoic. In: The Journal of Geology. Volume 98, No. 3, 1990, pp. 385-398. ( JSTOR 30065780 ), p. 387 (Tab. 1)
  2. ↑ a b Richard AF Grieve: Terrestrial Impact Structures. In: Annual Review of Earth and Planetary Sciences. Volume 15, 1987, pp. 245-270, doi: 10.1146 / annurev.ea.15.050187.00133 (alternative full text access : SAO / NASA Astrophysics Data System ), p. 261 (Tab. 1).
  3. ↑ a b Anna W. Michejewa: Overview table with position data, dimensions and dates in the complete catalog of the impact structures of the earth [Полный каталог импактных структур Земли]. Online database (Russian).
  4. ↑ a b Richard AF Grieve: The Terrestrial Cratering Record. In: Bernhard Peucker-Ehrenbrink, Birger Schmitz (Ed.): Accretion of Extraterrestrial Matter Throughout Earth's History. Springer Science + Business Media, New York 2001, ISBN 1-4613-4668-1 , p. 385, tab. 1.
  5. ↑ a b c d Zeleny Gai. In: Earth Impact Database. Retrieved October 29, 2013 .
  6. ↑ a b Anna W. Michejewa: Selenyj-Haj-Krater. ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The @1@ 2Template: Webachiv / IABot / labmpg.sscc.ru archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Complete catalog of Earth's impact structures [Полный каталог импактных структур Земли]. Online database (Russian).
  7. ^ Richard Grieve, James Rupert, Janice Smith, Ann Therriault: The Record of Terrestrial Impact Cratering. In: GSA Today. Volume 5, No. 10, 1995, pp. 193-196 ( PDF 377 kB).
  8. ↑ AA Valter, BP Brjansky, EE Lazarenko: The peculiarities of the astroblemes genesis of the Ukrainian Shield. In: Comparative Planetology, Vol. 19 (= Proceedings of the 27th International Geological Congress, Moscow 4-14 August 1984). VNU Science Press, Utrecht 1984, ISBN 90-6764-028-X , p. 179, Fig. 4.
  9. ↑ Eugene P. Gurov, Simon P. Kelley, Christian Koeberl, Natalia I. Dykan: Sediments and Impact Rocks Filling the Boltysh Impact Crater. In: Charles Cockell, Iain Gilmour, Christian Koeberl (Eds.): Biological Processes Associated with Impact Events. Impact Studies. Springer-Verlag, Berlin Heidelberg 2006, ISBN 3-540-25735-7 , p. 348.