petrophysics1 writes:
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?
Possibly from the expanse covered by the evaporate and a measurement of the volume of the basin (or depression) that it covers.
But this is, of course, counter to your major point that the salinity of the ocean is not an accurate means by which the age of the earth can be determined, as you stated in post #61. However, your example, I think, is a bit simplistic.
Understand that I completely agree with your major point. I just don't think that your example is especially good.