Scientists drilled into the Chixclub crater in the Gulf of Mexico to learn more about the end of the mesozoic era. They learned more than they expected, reports Katherine Kornei in The New York Times.
The first day of the Cenozoic was peppered with cataclysms. When the asteroid struck, it temporarily carved a hole 60 miles across and 20 miles deep. The impact triggered a tsunami moving away from the crater. It also catapulted rock into the upper atmosphere and beyond.
"Almost certainly some of the material would have reached the Moon," Dr. Gulick said.
The largest pieces of debris rained back down to Earth within minutes, Dr. Gulick and his team say, pelting the scarred landscape with solidifying rock. Smaller particles lingered for longer periods, and glassy blobs known as tektites, formed when falling, molten rock cools, have been found across North America and dated to the Chicxulub impact. Within about 30 minutes, ocean water began to flood back into the crater through a gap in its northeastern rim, the researchers suggest.