Experts: Earthquakes are tied to natural gas drilling

Geological experts say earthquakes in Ohio and Oklahoma are directly tied to deep wells used to dispose of liquid wastes for hydraulic fracturing, also known as fracking, of natural gas. The experts also said they expect more earthquakes to occur as drilling expands across the U.S., according to MSNBC.

"To the extent that our nation wants to become independent of meeting its energy needs in the coming years, the increased earthquakes are going to go along with that," Art McGarr, a geophysicist with the U.S. Geological Survey in Menlo Park, Calif., was quoted as saying in the article. "The problems are only going to grow in the future."

McGarr was also quoted as saying that the minor earthquakes near Youngstown, Ohio, began around March, which is when the first drilling activities reportedly started. In 2011, the region experienced 11 earthquakes, the article said, even though the region is not considered seismically active. Geological experts are also looking into earthquakes just outside of Oklahoma City that may be related to drilling in that area.

During fracking, high-pressure water and chemicals areforced into shale rock to force out natural gas.

Ohio officials shut down all drilling January 3 after having concerns that the drilling was causing the earthquakes.

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