It was formed when the salinity of the sea water dissolved in the sedimentary layer of clay, sand, and other sedimentary rocks.
(It; was formed; the salinity of the sea water) (the sea water; dissolved; in the sedimentary layer of clay, sand, and other sedimentary rocks)
It the sea water
was formed dissolved
the salinity of the sea water
in the sedimentary layer of clay, sand, and other sedimentary rocks