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Old Red Sandstone, abbreviated ORS, is an assemblage of rocks in the North Atlantic region largely of Devonian age. It extends in the east across Great Britain, Ireland and Norway, and in the west along the eastern seaboard of North America .
Red beds (or redbeds) are sedimentary rocks, typically consisting 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.
Red Main Sandstone: Hesse, Baden-Württemberg, Bavaria; Wealden Sandstone: Lower Saxony, North Rhine-Westphalia; Australia. University of Sydney built from Hawkesbury ...
Jacobsville Sandstone is a red sandstone formation, marked with light-colored streaks and spots, primarily found in northern Upper Michigan, portions of Ontario, and under much of Lake Superior. Desired for its durability and aesthetics, the sandstone was used as an architectural building stone in both Canada and the United States.
Historical photo of the quarry c. 1898 Polished slab of the red sandstone, about 10.7 cm across. Seneca Quarry is a historic site located at Seneca, Montgomery County, Maryland. It is located along the Chesapeake and Ohio Canal on the north bank of the Potomac River, just west of Seneca Creek.
The Utah monolith was a metal pillar that stood in a red sandstone slot canyon in northern San Juan County, Utah, United States. The pillar was 3 m (9.8 ft) tall and made of metal sheets riveted into a triangular prism. It was unlawfully placed on public land between July and October 2016; it stood unnoticed for over four years until its ...
Danxia landform is formed from red-coloured sandstones and conglomerates of largely Cretaceous age. The landforms look very much like karst topography that forms in areas underlain by limestones, but since the rocks that form danxia are sandstones and conglomerates, they have been called "pseudo-karst" landforms.
Roxborough State Park is a designated Colorado Natural Area and National Natural Landmark for its 300-million-year-old red sandstone Fountain Formations that tilt at a 60-degree angle. The park includes great examples of exposed Precambrian to Late Mesozoic hogback, monolithic and spire formations from the Permian , Pennsylvanian and Cretaceous ...