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:
““With the gracious consent of the audience, you will be made to don the red tophat”Ma token phrase that the courts had evolved, whose true meaning was known to every schoolboy.”
—Vladimir Nabokov (1899–1977)
“Nature in darkness groans
And men are bound to sullen contemplation in the night:
Restless they turn on beds of sorrow; in their inmost brain
Feeling the crushing wheels, they rise, they write the bitter words
Of stern philosophy & knead the bread of knowledge with tears & groans.”
—William Blake (1757–1827)