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Profile: Bob Morton

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Former petroleum geologist Bob Morton, now with the US Geological Survey, concludes in a paper that the oil and gas industry’s extraction of millions of barrels of oil, trillions of cubic feet of natural gas, and tens of millions of barrels of saline formation water lying with the petroleum deposits has caused a reduction in subsurface pressure causing underground faults to slip and the land above to subside. “Subsidence rates in coastal Louisiana associated with natural compaction and dewatering of Holocene deltaic sediments should decrease with time; therefore historical rates of delta plain subsidence that accelerate and typically exceed geological subsidence rates are most likely influenced by anthropogenic activities, such as subsurface fluid extraction.” [Gulf Coast Association of Geological Societies, 2002 pdf file; National Geographic, 10/2004] The oil industry and its consultants dispute Morton’s theory, but fail to disprove it. If Morton is correct, any restoration efforts in the area could fail as they would be unable to offset the high rates of subsidence. [National Geographic, 10/2004]

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