why springs have salt water?

why the ground water salty

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  • paul h
    Lv 7
    8 years ago
    Favorite Answer

    Scooter is right in saying that some springs can have salt water if they are close to salt dome deposits or close to ocean shorelines. But there is also evidence that salt water is found deep in the Earth. Some very deep bore holes were drilled in Russia in search of oil deposits and they found salt water and methane gas in them.

    "The farmer, Boetie Botes, told the Cape Times Soekor had drilled the borehole in 1965 when his father

    ran the farm.

    Soekor was looking for oil and drilled to about 11 000ft. They found no oil, but some methane gas and

    warm, salty water from deep underground.

    Soekor closed the borehole and put a tap on it for the farmer. However, because it was so salty, they

    never used it.

    “That tap was closed for over 40 years and it was rusted. You can’t let it flow out because it will kill all

    the vegetation because it is as salty as seawater.

    “When I heard Professor van Tonder saying he wanted an open borehole I phoned him. My neighbour

    and I put some oil on the tap and we got it open again. At first gas came out and then, after about three

    quarters of an hour, water came out, but gas with it. We lit it and it burnt,” Botes said. "

    http://natagri.ufs.ac.za/dl/userfiles/Documents/00...

    In addition, many companies dispose of chemicals in deep injection wells which can flow upwards over time and pollute other wells or ground water....the saline brine used in such methods can be a source of salt water in wells or springs.

    http://www.propublica.org/article/injection-wells-...

    http://www.freedrinkingwater.com/water_quality/qua...

    Salt water is also found in very deep mines.

    http://minnesota.cbslocal.com/2011/02/17/ancient-w...

  • 8 years ago

    Salt water springs can occur in areas where the groundwater is in contact with halite (NaCl) -rich deposits'- salt domes and such.

    There is also a phenomenon called "saltwater intrusion" in coastal areas, where drought and high local water useage can lower the water-table, allowing a wedge of saltwater to intrude into the adjacent freshwater aquifer. Ordinarily, this phenomenon affects local wells, but I am not familiar with impacts to "springs"- meaning free-flowing water at the ground surface. Since the conditions that result in saltwater intrusion lower the water table substantially, natural springs generally cease to produce altogether. I imagine there are scenarios where it is possible in coastal areas, at least with groundwater encountered during excavation or some such...if you want to call those springs.

  • 8 years ago

    spring water is not salty, the salt is filtered by rocks and stuff

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