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arenite |
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arenite [′a·rə‚nīt] (petrology) Consolidated sand-texture sedimentary rock of any composition. Also known as arenyte; psammite. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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These sequences generally comprise lower clastic (fuchsitic quartz arenite, grit, conglomerate) and chemical (carbonate, iron formation) sedimentary layers deposited in intertidal, shallow-marine, platformal and submarine-fan environments, overlain by volcanic (komatiite, basalt, rhyolite) sequences. Apparently, scientists first discovered the mineral in 1876 and called it arenite, which means "blue sky" in Greek. The Dona Amelia zone covers old and present pit and declines of the Trinidad, Mina Vieja, Las Rosas, Manantial and Manganeso quartz veins in a sedimentary sequence of arenites, greywackes and conglomerates of Proterozoic age known as the Bonanza Formation. |
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