shale
57
5.7
- noun
- /ʃeɪl/
- Specialized
:
lutita
- The dull-gray mountainside was covered with loose shale and sharp rocks that shifted underfoot.
- shale gas
- shale oil
- shale and sandstone
They don't have as much clay as a true shale should have.
- They don't have as much clay as a true shale should have.
- So those of us who live atop shale are living atop of old ancient sea floors.
- OK, you might have a, a peat that forms shales.
- Only US has shale gas extraction expertise.
- Imagine that in her eyes they made out of quartzite and gold and fool's gold and shale.
Examples
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Miles-deep erosion has etched away the soft shales, leaving nubbins of resistant sandstones as ridges.
Academic text (1991) -
Fracking fluid is pumped down into the well at a pressure so high it cracks the shale rock, creating fractures through which the trapped gas and oil can escape.
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The final question was about gas, and particularly about shale gas.
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Canada is beginning to explore its shale gas resources, but as yet there is little activity in Mexico.
Academic text (2011) -
A great example is the shale and oil gas revolution.
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The Chagrin River flows through the exposed shale valley on its way to Lake Erie.
Fiction book (1999) -
About a half-mile down, under a sunny gray shale escarpment, there was a party in session.
Fiction book (1994) -
Water oozed and dripped from mossy embedded shale into the pool, sending shivers across the surface.
Fiction book (1998) -
Yes, the window is narrow, but if you have a look at the geo, you'll see a very promising shale formation that hasn't been tapped yet.
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Northeast Ohio sits on vast shale formations that are rich in gas and oil.
Compounds
How Hard
Surface Forms
Etymology
Shale comes from an old English word scealu meaning 'shell' or 'thin plate'. A helpful image is that shale is a rock that splits into thin, shell-like layers, so the origin explains the rock's modern name and form.