Red beds (or redbeds) are sedimentary rocks, which typically consist of sandstone, siltstone, and shale that are predominantly red in color due to the presence of ferric oxides. Frequently, these red-colored sedimentary strata locally contain thin beds of conglomerate, marl, limestone, or some combination of these sedimentary rocks. The ferric oxides, which are responsible for the red color of red beds, typically occur as a coating on the grains of sediments comprising red beds. Classic examples of red beds are the Permian and Triassic strata of the western United States and the Devonian Old Red Sandstone facies of Europe.
Read more about Red Beds: Primary Red Beds, Diagenetic Red Beds, Secondary Red Beds, See Also
Famous quotes containing the words red and/or beds:
“Billboards, billboards, drink this, eat that, use all manner of things, everyone, the best, the cheapest, the purest and most satisfying of all their available counterparts. Red lights flicker on every horizon, airplanes beware; cars flash by, more lights. Workers repair the gas main. Signs, signs, lights, lights, streets, streets.”
—Neal Cassady (1926–1968)
“Alice opened the door and found that it led into a small passage, not much larger than a rat hole: she knelt down and looked along the passage into the lovliest garden you ever saw. How she longed to get out of that dark hall, and wander about among those beds of bright flowers and those cool fountains, but she could not even get her head through the doorway.”
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)