Experiments and simulations by Marc Prat at the University of Toulouse in France and colleagues show how
salty water evaporating from the pores in these materials leaves behind patches of salt crystals that grow into towers rather than a uniform film.
Not exact matches
There, gypsum crystals form from
evaporating volcanic pools of
salty, acidic
water.
Mineral deposits left behind as Martian
water evaporated include substances like hematite and jarosite, which indicate a once wet, acidic and
salty waterscape.
The
salty water pools into the fairly shallow ponds and the hot sun
evaporates the
water, allowing the salt to crystalize on the earth walls and floor.
Because surface
water that
evaporates leaves nearly all of its salt behind, the surface becomes
saltier — and if it becomes more dense than the underlying
water, it sinks, sometimes in great blobs that do not mix very well with underlying
waters, just like Dan's cream.
Such a conveyor is needed because the Atlantic is
saltier than the Pacific (
water which
evaporates from the Atlantic is carried by the trade winds across Central America to fall as rain in the Pacific).