Changes

=== Sedimentary rock ===

=== Sedimentary rock ===

Sedimentary rocks are formed by sand and other sediments which precipitate from solution, and undergo [[lithification]].  Although only about 5% of the earth's rocks are sedimentary, 75%-80% of the Earth's land area is covered in sedimentary rock.[http://honolulu.hawaii.edu/distance/gg101/Programs/program21%20SedimentaryRocks/program21.html]  Therefore, flood geologists point out, there is irrefutable evidence that at least 75% of the Earth's land was once covered in water.

Some sedimentary rocks are formed by sand and other sediments which precipitate from solution, and undergo [[lithification]].  Although only about 5% of the earth's rocks are sedimentary, 75%-80% of the Earth's land area is covered in sedimentary rock.[http://honolulu.hawaii.edu/distance/gg101/Programs/program21%20SedimentaryRocks/program21.html]  Therefore, flood geologists point out, there is irrefutable evidence that at least 75% of the Earth's land was once covered in water.

 

Cross-bedded dune sandstone was formed only on dry land, and only occurs in 7 distinct strata, separated by water-deposited layers.

=== Sufficient water ===

=== Sufficient water ===