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oil shale
noun
, Geology.
- a black or dark-brown shale or siltstone rich in bitumens, from which shale oil is obtained by destructive distillation.
oil shale
noun
- a fine-grained shale containing oil, which can be extracted by heating
oil shale
- A fine-grained black or dark brown shale containing hydrocarbons in the form of kerogen. When heated, oil shale yields petroleum or natural gas.
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Word History and Origins
Origin of oil shale1
First recorded in 1870–75
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Example Sentences
Oil-shale is plentiful on the Congo River near Ponthierville and good indications of oil are recorded in other places.
From Project Gutenberg
Also it is distilled in Scotland from oil shale, from which paraffin oil and wax and similar substances are produced.
From Project Gutenberg
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