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New images of an asteroid impact crater buried deep below the floor of the Atlantic Ocean have been published today by researchers at Heriot-Watt University.

The images confirm the 9km Nadir Crater, located 300m under the floor of the Atlantic Ocean, was caused by an asteroid smashing into Earth at the end of the Cretaceous period around 66 million years ago.

That's the same age as the dinosaur-killing 200 km wide, Chicxulub impact crater in Mexico.

The images have helped the researchers determine what happened in the minutes following impact: The formation of an initial bowl-shaped crater, rocks turned to a fluid-like state and flowing upwards to the crater floor, the creation of a damage zone covering thousands of square kilometers beyond the crater, and an 800-meter-plus high tsunami that would have traveled across the Atlantic ocean.

The findings are reported in Communications Earth & Environment.

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