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  2. Sandstone - Wikipedia

    en.wikipedia.org/wiki/Sandstone

    A QFL chart is a representation of the framework grains and matrix that is present in a sandstone. This chart is similar to those used in igneous petrology. When plotted correctly, this model of analysis creates for a meaningful quantitative classification of sandstones. [24] A sandstone provenance chart is typically based on a QFL chart but ...

  3. Red beds - Wikipedia

    en.wikipedia.org/wiki/Red_beds

    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.

  4. Jacobsville Sandstone - Wikipedia

    en.wikipedia.org/wiki/Jacobsville_Sandstone

    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.

  5. List of sandstones - Wikipedia

    en.wikipedia.org/wiki/List_of_sandstones

    This is a list of types of sandstone that have been or are used economically as natural stone for building and other commercial or artistic purposes. Trans-regional [ edit ]

  6. Old Red Sandstone - Wikipedia

    en.wikipedia.org/wiki/Old_Red_Sandstone

    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 .

  7. New Red Sandstone - Wikipedia

    en.wikipedia.org/wiki/New_Red_Sandstone

    Exeter, Devon, ancient city walls of Isca Dumnoniorum with medieval and Roman elements. The New Red Sandstone, chiefly in British geology, is composed of beds of red sandstone and associated rocks laid down throughout the Permian (300 million years ago) to the end of the Triassic (about 200 million years ago), that underlie the Jurassic-Triassic age Penarth Group. [1]

  8. Bloomsburg Formation - Wikipedia

    en.wikipedia.org/wiki/Bloomsburg_Formation

    The Bloomsburg is defined as a grayish-red and greenish-gray claystone, argillaceous siltstone, shale, and very fine to fine-grained sandstone, [4] arranged in fining-upward cycles. [5] Although the Bloomsburg can sometimes be green to gray, its most dominant color is red and they are often called "The Bloomsburg Red Beds".

  9. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    Arkose – Type of sandstone containing at least 25% feldspar; Banded iron formation – Distinctive layered units of iron-rich sedimentary rock that are almost always of Precambrian age; Breccia – Rock composed of angular fragments; Calcarenite – Type of limestone that is composed predominantly of sand-size grains; Chalk – Soft carbonate ...