Mega trah dating

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Did the enormous amounts of material thrown into the atmosphere block out the sun and destroy parts of the ozone layer to the extent that the Earth's ecological systems shut down?And did that shutdown cause more than half the planet's species to die off?The impact of the six-mile-wide space maverick created an underwater crater more than 25 miles deep and 112 miles in diameter – farther across than the distance between Austin and Waco.Material was blasted out of the crater at 50 times the speed of sound.This is the scenario suggested by a number of scientists who have been exploring the probable Big Crash.The asteroid/comet collision idea is not a recent one.Paleontologist Thor Hansen began studying the Brazos River site in 1985.

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But the first solid evidence linking a cosmic catastrophe with the wholesale eradication of species was suggested in the late 1970s by Walter Alvarez, a geologist at the University of California at Berkeley, and his father, physicist Luis Alvarez.Chemical analysis of the glass drops, called tektites, confirms their impact origin and indicates that they are probably part of the ejecta layer.The most likely candidate for ground zero is the Chicxulub crater, just north of Mérida, Mexico, on the coast of the Yucatán Peninsula.The meteorite hurtled toward the big, blue planet, reaching speeds of as much as 150,000 miles per hour.Its surface white-hot from the friction caused by its plunge through the atmosphere, the giant crashed into the sea on what is now the northern coast of the Yucatán Peninsula of Mexico.

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