Asteroids and dinosaurs: Unexpected twists and an unfinished story Plate tectonics might seem like a routine topic from a 7th grade textbook, but in the 1970s, plate tectonics was cutting-edge science. The theory had onl

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Date: 2009-03-23 16:23:10 Extinction events Planetary science Climate history Cretaceous Volcanoes K–T boundary Chicxulub crater Iridium anomaly Walter Alvarez Geologic time scale Phanerozoic Historical geology		Asteroids and dinosaurs: Unexpected twists and an unfinished story Plate tectonics might seem like a routine topic from a 7th grade textbook, but in the 1970s, plate tectonics was cutting-edge science. The theory had onl Add to Reading List Source URL: undsci.berkeley.edu Download Document from Source Website File Size: 3,55 MB Share Document on Facebook

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