Jisho

×
けつがん 頁岩
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Noun, Noun which may take the genitive case particle 'no'
1. shale​
Wikipedia definition
2. Shale​Shale is a fine-grained, clastic sedimentary rock composed of mud that is a mix of flakes of clay minerals and tiny fragments of other minerals, especially quartz and calcite. The ratio of clay to other minerals is variable. Shale is characterized by breaks along thin laminae or parallel layering or bedding less than one centimeter in thickness, called fissility. Mudstones, on the other hand, are similar in composition but do not show the fissility.
Read “Shale” on English Wikipedia
Read “頁岩” on Japanese Wikipedia
Read “Shale” on DBpedia

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