Shale



GRE 蓝宝

解释

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

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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