Sceince of dating events using ice

A decade ago, a small group of scientists proposed a similar scenario.

They were trying to explain a cooling event, more than 1000 years long, called the Younger Dryas, which began 12,800 years ago, as the last ice age was ending.

Proponents of a Younger Dryas impact now feel vindicated.

"I'd unequivocally predict that this crater is the same age as the Younger Dryas," says James Kennett, a marine geologist at the University of California, Santa Barbara, one of the idea's original boosters.

The news of the impact discovery has reawakened an old debate among scientists who study ancient climate.

A massive impact on the ice sheet would have sent meltwater pouring into the Atlantic Ocean—potentially disrupting the conveyor belt of ocean currents and causing temperatures to plunge, especially in the Northern Hemisphere.

The timing is still up for debate, but some researchers on the discovery team believe the asteroid struck at a crucial moment: roughly 13,000 years ago, just as the world was thawing from the last ice age.Its official chemical symbol is Mg, and its atomic number is 12, which means that magnesium has 12 protons in it ...READ MORE Flowers are not on plants just to make them look pretty.It will help you focus on an area of science that's best for you without having to read through every project one by one!Magnesium is a chemical element – a substance that contains only one type of atom.

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It advances on the Arctic Ocean not in a straight wall, but in a conspicuous semicircle, as though spilling out of a basin.

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