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Images: Undersea Search for Clues of Dinosaurs' Demise

  • comet impact caused dinosaur extinction

    comet impact dinosaur extinction
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    CREDIT: Don Davis
  • Campeche Escarpment

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    CREDIT: Base image-Google Earth
  • NOAA Sounding Methods

    sounding methods for mapping the ocean floor
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  • Cretaceous Clues

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    CREDIT: (c) 2013 MBARI
  • Ancient Undersea Rocks

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    CREDIT: (c) 2013 MBARI
  • Campeche Cliffs Go Online

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    CREDIT: Google Earth
  • Underwater Landscape

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    CREDIT: (c) 2013 MBARI
  • Sonar Mapping

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    CREDIT: Schmidt Ocean Institute
Some 65 million years ago, a space rock crashed into Earth near what is now the Yucatan Peninsula of Mexico. The result likely wiped out the dinosaurs. The ancient impact created a huge crater that is buried under piles of debris and marine sediments. As such, little research has been carried out on these rocks. All existing samples of impact deposits close to the crater have come from deep boreholes drilled on the Yucat√°n Peninsula, say scientists at the Monterey Bay Aquarium Research Institute.

Now the MBARI scientists say they have found evidence that remnants from the comet crash are visible along a huge underwater cliff called the Campeche Escarpment in the southern Gulf of Mexico.

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