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Wadi Maghareh (also spelled Maghara or Magharah, meaning "The Valley of Caves" in Egyptian Arabic) is an archaeological site located in the southwestern Sinai Peninsula, Egypt. It contains pharaonic monuments and turquoise mines dating from the Old , Middle and New Kingdoms of Ancient Egypt .
The word turquoise dates to the 17th century and is derived from the Old French turquois meaning "Turkish" because the mineral was first brought to Europe through the Ottoman Empire. [ 6 ] [ 3 ] [ 4 ] [ 7 ] [ 8 ] However, according to Etymonline , the word dates to the 14th century with the form turkeis , meaning "Turkish", which was replaced ...
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains, cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks.
Adams Gate at Bamberg Cathedral made of Burgpreppach Sandstone Quarry in Worzeldorf (Nuremberg). Abtswind Sandstone: on the Friedrichsberg near Abtswind; Burgpreppach Sandstone: Burgpreppach
Lithic sandstones can have a speckled (salt and pepper) or gray color, and are usually associated with one specific type of lithic fragment (i.e., igneous, sedimentary, or metamorphic). [ 1 ] Tectonically, lithic sandstones often form in a wide variety sedimentary depositional environments (including fluvial , deltaic , and alluvial sediments ...
Golden Gate Highlands National Park is located in Free State, South Africa, near the Lesotho border.It covers an area of 340 km 2 (130 sq mi). [1] The park's most notable features are its golden, ochre, and orange-hued, deeply eroded sandstone cliffs and outcrops, [2] especially the Brandwag rock. [3]
Dune cross-bedded aeolian Yesnaby Sandstone of probable Lower Devonian age, Yesnaby, Mainland Orkney Angular unconformity between Middle Devonian Lower Stromness Flagstone and underlying Yesnaby Sandstone of probable Lower Devonian age Old Man of Hoy, Upper Middle Devonian fluvial sandstones resting on basalt Brick-red Eday Marl, Bay of Birstane, reduced to green colour along fractures
The Dakota is a sedimentary geologic unit name of formation and group rank in Midwestern North America. The Dakota units are generally composed of sandstones, mudstones, clays, and shales deposited in the Mid-Cretaceous opening of the Western Interior Seaway. [7]