How well I remember the excitement over the theory of plate tectonics - and confirmation of continental drift - that emerged among geomorphologists in the late '60s.Last week's earthquake off New Zealand moved South Island twelve inches closer to Australia. Geologists called it a subduction thrust rupture on the boundary of the Australian and Pacific continental plates. The 7.8 magnitude quake was the strongest shaker in New Zealand since 1931. Natural events like this one help me put anthropogenic impacts on Earth into perspective.
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