phosphate rocks (fossil bones, guano)

phosphate rocks (fossil bones, guano): Макаров: фосфатсодержащие породы (ископаемые костные остатки, гуано)

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sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
Plymouth — This article is about the city in England. For the Massachusetts town, see Plymouth, Massachusetts. For the car brand, see Plymouth (automobile). For other uses, see Plymouth (disambiguation). Plymouth City City of… … Wikipedia

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