Saturday, May 02, 2009

2009-05-02 Saturday - Extinction Level Event Theories

New Blow for Dinosaur-Killing Asteroid Theory

Deccan Traps in India

The Deccan Traps are a large igneous province located on the Deccan Plateau of west-central India (between 17–24N, 73–74E) and one of the largest volcanic features on Earth. They consist of multiple layers of solidified flood basalt that together are more than 2,000 m thick and cover an area of 500,000 km²

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A suspected large impact crater has been recently reported in the sea floor off the west coast of India. Called the Shiva crater, it has also been dated at sixty-five million years, right at the K–T boundary. The researchers suggest that the impact may have been the triggering event for the Deccan Traps as well as contributing to the acceleration of the Indian plate in the early Tertiary.[6] However, opinion in the geologic community is not unanimous that this feature is actually an impact crater.[7] Also, the reported age is in the middle of the ages given for the Deccan rocks.


Massive Volcanic Eruptions Could Have Killed Off the Dinosaurs

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