Wednesday, March 29, 2006

Oldest quake and tsunami happened in India

Scientists have discovered the oldest earthquake and tsunami. It happened some 1,600 million years ago in what is now eastern India. From The Hindu:
The scientists analyzed sedimentary rocks deposited in "Chaibasa Formation" in eastern India. "The layers show deformations that have never been described before," Rajat Mazumder, lead author and currently a Humboldt Fellow in the university of Munich said.

Mazumder and co-workers show that earthquakes caused the deformations "while the sediments were still being deposited and before their consolidation," they said...

Considering their occurrence in sediments deposited between 1,600 and 2,100 million years ago, "they are among the earliest records of earthquakes known in the Earth's history," the scientists reported.

(Thanks prakash)

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