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创建: 2023-09-27T15:42:42Z

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定义

  • Concretions are masses of mineral matter embedded within rock layers, including limestone, sandstone, and shale. They often take shape when minerals precipitating (settling) out of water collect around a nucleus, such as a pebble, leaf, shell, bone, or fossil. (en)

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http://aims.fao.org/aos/agrovoc/c_8881a46c

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RDF/XML TURTLE JSON-LD 创建于 2019/9/4, 最后修改 2023/9/27