Definition of shale
: 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
shaleyplay or less commonly
Recent Examples of shale from the Web
Petersburg, Rosneft CEO Igor Sechin said thanks to increasing efficiency U.S. shale oil producers would likely deliver an additional 1.5 million barrels of crude a day to the market in 2018.
According to the Maryland Department of Natural Resources, all of Garrett sits on the gas-rich Marcellus shale.
Natural gas from American shale basins is flooding the global market, reaching customers from China to the Dominican Republic, and more is on the way as Cheniere prepares to start up a fourth plant at Sabine Pass.
The shale expansion that many fear will offset the Organization of Petroleum Exporting Countries' efforts showed the first signs of slowing down last week, with the fewest rigs added this year, Baker Hughes Inc. data show.
At least five nuclear power plants have retired in the past five years including Fort Calhoun in Nebraska, which closed in October, as shale gas and rising output of wind and solar power depress prices.
Young paleontologists can try some of the techniques scientists use in the field, such as rubbing out a two-dimensional fossil imprint or uncovering fossils from shale.
Back then, companies in the United States took advantage of the high prices, learning to produce huge quantities of oil from shale rock in a process called hydraulic fracturing, or fracking.
Here are several posts from the geoscience blogosphere last week highlighting some interesting writing: Suvrat Kher of Rapid Uplift discusses the geologic context of shale gas resources in India and relationship to growing demand for energy.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'shale'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of shale
probably from obsolete or dialect shale scale, shell, from Middle English, from Old English scealu — more at shell
First Known Use: 1747
SHALE Defined for English Language Learners
Definition of shale for English Language Learners
: a soft kind of rock that splits easily into flat pieces
SHALE Defined for Kids
Definition of shale for Students
: a rock with a fine grain formed from clay, mud, or silt
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