What causes the water in the oceans to be salty?

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Laurence

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What causes the water in the oceans to be salty?
« on: 02/02/2009 19:30:02 »
Laurence asked the Naked Scientists:
   
What causes the water in the oceans to be salty?

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Offline Bass

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What causes the water in the oceans to be salty?
« Reply #1 on: 02/02/2009 22:41:46 »
Salts are minerals that are dissolved from rocks and soils during erosion.  Freshwater is actually a misnomer- all surface waters contain some concentration of salts.  While concentrations are low in flowing waters-- in oceans (and some landlocked lakes, like the Great Salt Lake) there are no outlets, so the salts are concentrated as water evaporates.
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