Those Vast Blankets of Rock

And the waters prevailed exceedingly upon the earth; and all the high hills, that were under the whole heaven, were covered. Genesis 7:19

"Seen nearly everywhere, on all the continents, sedimentary rock strata cover some 75% of the earth’s land surface. Strata are often horizontal but can also be tilted. The tilting may be due to tectonic movement or to the angle of original deposition, as strata can deposit at gradients exceeding 30°. Some strata have been deformed into

curves due to subsequent tectonic movement while the sediments were still soft. Sedimentary layers come in many different thicknesses and types, from enormous formations hundreds of meters deep, down to tiny laminae less than 1 mm thick.
These layered rock formations continue under the ground, right under our feet. Individual layers frequently continue, unbroken, over huge areas of the continents. Another way to visualize them is as vast ‘blankets’ of rock, on top of each other in series.

Layers covering large areas of continents are extremely difficult or impossible to explain using standard uniformitarian explanations of sediment deposition.
Sedimentologist Guy Berthault’s flume experiments demonstrated that layered sediments deposit rapidly in the manner of a horizontally advancing deposition in the direction of current flow. This is known as progradation. 

Sideways deposition of strata was first proposed by German geologist Johannes Walther (1860–1937). In the context of a global Flood, strata will form in wide currents of sediment-laden water when a ‘basin’ or lowered area is created. Enormous quantities of loose sediment particles are carried along by the water currents and fall down the advancing ‘face’, or front, of the layer of sediment. This is how the layer grows horizontally. Depositing sideways, the layers are laid down like a layer of cream or icing spread sideways on a cake.
In the year-long global Flood, the world’s deepest and largest sedimentary formations were deposited in just a few months, at mind-boggling speed. Indeed, Berthault’s experiments demonstrate that three layers can form together at the same time. As the layers form, further back (‘upstream’ of the current) another three can simultaneously begin to form horizontally on top of them.

The Tonto Group, part of the Grand Canyon strata, is an example of three layers extending over a large area that formed together during the global Flood. 

A layer of sand at the bottom, 

a clay mud layer in the middle, 

and a lime mud layer on top were 

deposited sideways and at the same time, early in the Flood. 

These later hardened into rock to become the Tapeats Sandstone, Bright Angel Shale and Muav Limestone strata. Further series of layers then deposited in water currents over the top of these sediments, in the same rapid and sideways manner, to form the entire Grand Canyon sequence of strata. The canyon itself was then eroded as the Floodwaters later poured off the continent.

Berthault also discovered that geological layering can rapidly

develop after, not during, deposition of the sediments, due to desiccation (drying out) creating bedding plane separations in the sediments, as the entire formation gradually hardened into rock. Desiccation occurred after the Flood waters had drained away and the land began to dry out.

Such a Flood, caused by tectonic break-up of the crust, produced high energy water currents, massive erosion, and enormous quantities of loose sediment. Carbonate and other rock-forming minerals were dissolved in the floodwaters, and likely also welled up from beneath the crust, in the waters of the fountains of the great deep.
Such widespread geological strata are compelling evidence for the Biblical Flood." 

CMI