Shale

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GRE 蓝宝

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[编辑] GRE 红宝书

Shale
  • n.页岩
  • [英] n.页岩 ( a stratified fissile rock)
  • [类] shale : lode / well : aquifer ( 矿脉中含页岩 / 水土层中含源泉)
  • [记] 可能是shell ( 贝壳) 的变体

[编辑] Webster Collegiate

noun

  • Etymology: probably from obsolete or dialect shale scale, shell, from Middle English, from Old English scealu — more at shell
  • Date: 1747
  • a fissile rock that is formed by the consolidation of clay, mud, or silt, has a finely stratified or laminated structure, and is composed of minerals essentially unaltered since deposition
  • ? shaley also shaly adjective


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