1. D. Rajmon (2012).

8 Dec 01 Abstracts of Annual AGU meeeting: "Ewing structure: a possible abyssal impact crater" by Dallas Abbott -
"about 150km in diameter...about the age of the late/middle Miocene boundary, a prominent mass extinction event"
[see this New Zealand article - an ocean impact might have started off the Antarctic ice sheet due to the water released and the global cooling].
(GSA 2002: MICROFOSSIL MELTING BY THE EWING IMPACT)
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Спутниковая фотография района кратера из Google Earth.



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