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Wednesday, May 8, 2013

Geologic study suggests Earth's tectonic activity peaked 1.1 billion years ago

Geologic study suggests Earth's tectonic activity peaked 1.1 billion years ago
(Phys.org) —A pair of Australian researchers studying rock samples has found evidence to suggest that the Earth's tectonic plate activity peaked approximately 1.1 billion years ago. In their paper published in the journal Geology, Martin Van Kranendonk and Christopher Kirkland describe the results of their analysis of a multitude of rock samples from various sites around the world. http://phys.org/news/2013-05-geologic-earth-tectonic-peaked-billion.html#nwlt

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