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Proceedings of the National Academies of Science
One interpretation of this new study is that we may need to update our thinking and mental images of what the ground underneath our feet looks and acts like. The thumbnail graphics below depict a range of ways of representing/framing sub-surface geology -- from impermeable, homogenous rock layers to fractured layers of porous rock with pathways for upward fluid migration via natural and man-made faults. This study suggests that over time interconnections are to be expected and that gasses, brines and fluids under pressure 1-mile down don't necessarily mean "out of sight, out of mind " in the long run.
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