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Bluestone from Pennsylvania and New York is a sandstone defined as feldspathic greywacke. The sand-sized grains from which bluestone is constituted were deposited in the Catskill Delta during the Middle to Upper Devonian Period of the Paleozoic Era, approximately 370 to 345 million years ago.
The Bluestone Formation is a geologic formation in West Virginia. It is the youngest unit of the Upper Mississippian -age Mauch Chunk Group . A pronounced unconformity separates the upper boundary of the Bluestone Formation from sandstones of the overlying Pennsylvanian -age Pocahontas Formation .
Bäch Sandstone: by the Lake Zürich; Bern Sandstone: quarry sites near Bern in Ostermundigen, Krauchthal and by the Gurten; Bollingen Sandstone (also Buchberg Sandstone, Uznaberg Sandstone, Bollinger-Lehholz Sandstone and Güntliweid Sandstone): Rapperswil-Jona by the Upper Lake Zürich; Grès à cailloux roulés: near Avenches; Grès de ...
The company is the only producer of Shenandoah Valley Bluestone (limestone) Big Run Quarry Site , near Luray, Virginia, NRHP-listed, an archaeological site in Shenandoah National Park . Thunderbird Archaeological District and Jasper quarry, near Limeton, Virginia, is an archaeological district described as consisting of "three sites ...
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. [1] Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's ...
Bluestone Formation: Overlies: Hinton Formation: Location; Region: West Virginia: Country: United States: ... The Princeton Sandstone is a geologic formation in West ...