Anonymous ID: c7e4b4 Jan. 24, 2020, 4:57 p.m. No.7904299   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun

>>7904251

Sediment layers, from sediment, from the flood, about 4680 years ago, are sideways mudslides that hardened.

More easily seen created following the explosion of Mt. St. Helen's in the 1980's. The resulting mudslides hardened into layers of sedimentary rock, because that's all sedimentary rock is. Hardened mud.