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Eugene

(61,592 posts)
Sat Oct 10, 2015, 03:11 PM Oct 2015

Oklahoma earthquake likely caused by wastewater injection, seismologist says

Source: Associated Press

Oklahoma earthquake likely caused by wastewater injection, seismologist says

Associated Press in Oklahoma City
Saturday 10 October 2015 16.41 BST

A moderate, magnitude-4.4 earthquake has shaken northern Oklahoma.

It was one of the stronger temblors the earthquake-prone state has had this year.

There were no initial reports of damage or injuries from Saturday morning’s earthquake, which was 18 miles southwest of Medford and four miles deep.

US Geological Survey seismologist George Choy said it had all the hallmarks of an induced quake, meaning it was triggered by the injection of drilling wastewater underground.

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Read more: http://www.theguardian.com/us-news/2015/oct/10/oklahoma-earthquake-fracking-us-geological-survey

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