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A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact.
Acicular colorless scolecite crystals in a group with pale green apophyllite and very light pink stilbite Gypsum (selenite variety): Santa Eulalia District, Chihuahua, Mexico Serandite clusters from Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada Botryoidal balls of shattuckite, from Otjikotu, Kaokoveld, Kunene, Namibia Ball ...
The earliest known works of representational art are stone carvings. Often marks carved into rock or petroglyphs will survive where painted work will not. Prehistoric Venus figurines such as the Venus of Berekhat Ram may be as old as 250,000 years [citation needed], and are carved in stones such as tuff and limestone.
Owens Quarry, a limestone quarry and crusher plant near Marion, Ohio, around which the community of Owens, Ohio grew. Ridgeway Site , in Hardin County, Ohio , a former archaeological site which, during excavation of its gravel, yielded numerous artifacts and buried bodies of the Glacial Kame culture , for which it is the type site.
Ancient quarry sites in the Nile valley accounted for much of the limestone and sandstone used as building stone for temples, monuments, and pyramids. [1] Eighty percent of the ancient sites are located in the Nile valley ; some of them have disappeared under the waters of Lake Nasser and some others were lost due to modern mining activity.
This is a list of notable quarries, worldwide.. In Australia: Bombo Headland Quarry Geological Site; Boogardie quarry; Boya, Western Australia; Cronulla sand dunes; Moorooduc Quarry Flora and Fauna Reserve
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Another diplodocid dinosaur found near the original Supersaurus quarry, known from a backbone (dorsal vertebra type specimen BYU 5750), was named Dystylosaurus edwini and is now also considered to be a specimen of Supersaurus vivianae. Hence, Dystylosaurus has also become a junior synonym of Supersaurus. [16]