The fault movements were in a reverse sense. The layers look like they drape over the edge of the basement block like the carpet on a stair step. Monoclines are shaped like a stair step. Here, have strata that are younger than the youngest strata of the Grand Canyon. This is a thick, red sandstone layer.
Sand blows up the back side of the dune, an tumbles down the front face.
These record succession of shallow sea, coastal plain, stream deposits, lake deposits, sand dunes, then more streams, and shallow sea. Most river erosion occurs when the river is in flood. Flash floods occur when there's so much rainfall that water can't sink into ground. Excess water becomes runoff, and spills into the stream, so water rises. Fast, turbulent flow can lift and carry boulders.