[editor-surveyor]

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The gradual cooling of the oceans ended the ice age.

How could a meteor cool anything?
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[txhurl]

They throw up water or dirt, depending where they land, into the atmosphere, blocking the sun’s rays.

[PIF]

It hit the Ice Cap - per findings of meteor specific elements found all over the Northern Hemisphere - the meteor was calculated to be one mile diameter. Heating from the collision melted vast areas of the Ice Cap. This resulted in mega floods. 1000 years later another meteor of about the same diameter from the same Taurid Group hit the remnants of the Ice Cap, this time throwing vast amount of dust into the atmosphere dropping the temperature below the average during the Ice Age - this period is called the Younger Dryas. This is due to happen again sometime as the Earth passes through various sectors of the long-broken up comet's debris torus. These two event are postulated to have ended the previous civilizations on Earth - we see their structures in what 'modern' archeology calls Megalithic structures - none of which can be specifically linked to any known civilization other than by inference - a dubious proposition. See Göbekli Tepe, in Turkey built 12,000 years ago then buried.