I'm not sure what you're expecting of me. I'm not a geologist, and nor is anyone here by the looks of things, so I guess either of us stating our case outright would be nothing more than a guess.
What I know is that fracking has never depleted a water supply. Apart from minor incidents caused by human and mechanical error, it has not damaged a single ecological system. If done correctly, it does not contaminate ground water.
So as much as you guys like to state that the Karoo is not Wyoming and so on, that doesn't do much to further this discussion to be honest. I've gone in to detail on my point of view in the other thread I linked you to earlier today where I explain that I am by no means outright stating that it is absolutely safe. Nothing ever is. What I am stating outright is that the economic benefit is absolutely immense, and we would be crazy to state that it must be banned based on emotional arguments...