Revd Michael Roberts, who's 68, questioned the claims on the leaflets and highlighted them to the Advertising Standards Authority, which found after investigating they either weren't proven or exaggerated.
Mr Roberts has a degree in geology from the University of Oxford, and has been published in the subject.
He told Premier: "Looking at all the technical reports from non-industrial places like the British Geological Survey... I came to the conclusion that... so much of what they were saying was just wrong, and very seriously wrong, to the point of misrepresentation."
"[I'm] very pleased. I think this type of false information which is being put out all over the country is in fact inhibiting any way of progressing with the energy needs of this country.
Fracking involves drilling into the ground and pumping a mixture of water, sand and chemicals there in order to extract gas and other natural resources. Fracking requires significant amounts of water to be transported to the site where it's happening.
Opponents say fracking uses excessive amounts of water, and pollutes water supplies. They also say it can cause earthquakes, and fails to address to the need to develop renewable sources of energy.
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