Salt Layers
Ü
Sea water is about 3% salts, mostly NaCl, with a little
CaCO
3
and CaSO
4
.
Ü
As sea water evaporates, the salts precipitate when
different fractions have evaporated:
CaSO
4
when 50% evaporated
CaCO
3
when 80% evaporated
NaCl when 90% evaporated
Ü
If sea water has evaporated to:
Below 10%, get a triplet layer of salts
10-20%, get a doublet layer
20-50%, get only a singlet layer