Sentences with phrase «natural cracks in that rock»

This was due to the fluid injected into the rock flowing into a pre-existing natural crack in the rock, known as a fault, triggering a minor earthquake.

A world - class climber since his student days, Reppy is famous for his invention and promotion of clean - climbing techniques, in which the nuts that hold the rope are wedged into existing, natural cracks in rock faces rather than banged in like pitons.

For years now, wastewater pumped underground as part of oil and gas development has seeped into natural cracks in that rock, easing the friction that keeps it stuck in place.

Not exact matches

Hydraulic fracturing, or «fracking,» is a petroleum - extraction procedure in which millions of gallons of water (as well as sand and chemicals) are injected deep into underground shale beds to crack the rock and release natural gas and oil.

Lomborg was quoted in an a web - piece entitled, «Earth Daze,» written by news correspondent John Stossel in Real Clear Politics, «The amazing number that most people haven't heard is, if you take all the solar panels and all the wind turbines in the world, they have (eliminated) less CO2 than what U.S. fracking (cracking rocks below ground to extract oil and natural gas) managed to do.»

One major downside to date is that it costs more than using water in hydraulic fracturing, so few companies have been willing to use propane gel to crack the rock and get at natural gas.