Ohio geologists link earthquakes to fracking, state unveils tougher rules

|By:, SA News Editor

Ohio geologists for the first time have linked earthquake activity in the Marcellus Shale to fracking, a new connection that could have implications for oil and gas drilling in the state and beyond.

As a result, Ohio is setting new permitting conditions in quake-sensitive areas and has halted drilling indefinitely at the site of five quakes last month in the Youngstown area.

Earthquakes recently rattled residents in Oklahoma, putting that state on track for record quake activity this year, which some seismologists say may be tied to oil and gas exploration.

Among companies drilling in the Marcellus and Utica shales: RRC, CHK, COG, ACMP, APC, ATLS, CVX, CNX, DTE, EOG, EQT, XCO, XOM, MWE, NBL, RGP, REXX, RICE, RDS.A, RDS.B,SWN, STO, SXL, TLM, WMB, WPX.