Salt domes or diapirs form when thick successions of salt (that formed by evaporation from seawater over long periods of time) start to rise and deform the overlying sediments.
Salt rises, because it is less dense than most sedimentary rocks and a thick layer of low density below a thick layer or dense material is mechanically instable.
it was formed by being formed
Gulfs are formed by erosion. Gulfs are formed by erosion.
starch is formed by fermentation.
The Spice Girls were formed by Chris Herbert.
Magnesium oxide is formed, i think(:
They are formed by erosion
when was the Himalayas formed?
It is formed by the wind
how was this planet formed
The formed province
It did not get formed
they are formed by rivers.