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Author Topic:   Salt in Oceans
petrophysics1
Inactive Member


Message 61 of 116 (509066)
05-18-2009 11:24 AM
Reply to: Message 60 by Percy
05-17-2009 7:47 AM


Another question
Percy writes:
Summarizing this topic so far, it would seem that accurately assessing the rates of all the various inputs and outputs of oceanic salt is not a simple task.
True and an understatement since we do not have detailed geologic maps for most of the land surface.We would need to document ALL of the oceanic sources and sinks. Now I can see this happening if someone can come up with an economic reason for doing so. I can't think of one offhand.
More to the point in this thread is WHY anyone would suggest that measuring the ocean's salinity would be a good way to determine the earth's age.
It was a stupid idea 110 years ago and still is. You have no idea if the ocean is in equilibrium today, has been in the past or not, so salinity could have been going up or down or staying the same at various times.
Any date you derive doing this is probably BS.
Thanks ICR for proving my point since the date you got is BS.

This message is a reply to:
 Message 60 by Percy, posted 05-17-2009 7:47 AM Percy has seen this message but not replied

Replies to this message:
 Message 62 by Dr Jack, posted 05-18-2009 12:08 PM petrophysics1 has replied

  
petrophysics1
Inactive Member


Message 67 of 116 (509333)
05-20-2009 2:27 PM
Reply to: Message 62 by Dr Jack
05-18-2009 12:08 PM


Re: Another question
Mr Jack writes:
It was a stupid idea 110 years ago and still is. You have no idea if the ocean is in equilibrium today, has been in the past or not, so salinity could have been going up or down or staying the same at various times.
Actually, we do know this. It can be determined from the various geological salt deposits around the world left when water from Oceans has, for one reason or another, been cut off and then evaporated out. And the result from these tells us that the salinity (and proportion of other disolved ions) has varied over geological time but not by vast amounts.
I take a cup of salt and add it to 1 qt. of water.
I take a cup of salt and add it to 50 gals. of water.
Now I evaporate both.
How exactly do I now determine the origional salinity of the 1 qt and 50 gals of water from the evaporite deposit I just created?

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 Message 62 by Dr Jack, posted 05-18-2009 12:08 PM Dr Jack has not replied

Replies to this message:
 Message 68 by pandion, posted 05-21-2009 11:43 PM petrophysics1 has not replied

  
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