Photograph: Eddie Thornton
An earthquake measuring 2.9 on Richter scale has in Blackpool is the fourth to hit the area in just six days....and regulators have now suspended fracking at the site and are investigating how the Cuadrilla Resources fracking site may have caused an earth tremor many times bigger than had been predicted.
The Oil & Gas Authority said it could not give a timescale for the conclusion of its “open-ended” investigation into Monday’s 2.9-magnitude tremor, which followed fracking by Cuadrilla last week. An OGA spokesman said it was “a case of how long is a piece of string?”.
Cuadrilla’s documents reveal that it had not expected to cause tremors in excess of 1.5 magnitude, given the mitigation plans it had in place. A 2.9-magnitude tremor, such as Monday’s, which residents reported shaking their homes, is about 25 times bigger, according to the US Geological Survey.