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Thought For Today - TFT
History, moves other people made on the chessboard of life. ..................................................................................................................
Fracking Fluids Contaminate Freshwater Aquifers By Christine Shearer, 18 May 2012
ED: Note that fracking risks increase greatly in seismically active areas,
of which the whole of New Zealand is one.
The study, done by hydrogeologist Dr. Tom Myers and published in the
peer-reviewed Ground Water, raises renewed questions about the potential for
 hydraulic fracturing to fundamentally alter shale rock formations and the hydrogeologic cycle in ways that could affect freshwater drinking supplies.To reach gas in shale rock, a well bore is sunk thousands of feet into the earth, passing through different strata, including freshwater aquifers, sandstone and siltstone, down to the shale. Shale can include remains of the
breakdown of trapped organisms that settled out with silt and clay-sized particles, making up the oil and gas. To access these fossil fuels,
thousands of gallons of water with chemicals and silica particles (sand) is blasted horizontally into the shale under pressure is so high it could chip the paint off a car, in a process called hydraulic fracturing, or fracking.
According to the oil/gas industry's FracFocus, the process works "to create or restore small fractures in a formation" that become "paths that increase the rate at which fluids can be produced from the reservoir formations."
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