Developer Cuadrilla this week suspended its shale gas drilling operations at Preese Hall near Blackpool, amid concerns that the activities have caused two earthquakes in the North West.
Two tremors occurred within 2km of, and soon after, fracking activities. The first was a 2.3 magnitude quake at the beginning of last month. A second, 1.5 magnitude quake at the end of May led to the suspension.
Fracking involves the use of high pressure bursts of water to fracture rock in order to release the gas.
The British Geological Survey, along with experts from Keele University, is now investigating if there is a correlation between the events. There has been evidence in the past of subsurface drilling and mining causing earthquakes.
Last week the House of Commons Energy and Climate Change select committee gave the go-ahead to shale gas drilling, but a committee spokesman told NCE that its review did not consider the impact from earthquakes and that it had no plans for a further inquiry.