shale

At the time, the area was quickly becoming a hub of shale gas extraction.

The shale gas “boom” was as ephemeral as Cruz’s presidential prospects.

Chevron announced in December 2019 that it would write down up to $11 billion in shale gas assets.

Some, like Anadarko Petroleum Corporation, liquidated their shale gas holdings.

Avoid glasslike or crystal filled stones, and don’t use slate or shale either since they are prone to exploding and breaking near heat.

And that may well be what is happening in the Barnett Shale region around, yes, Dallas and Irving.

Thanks to the shale revolution, domestic oil production is soaring.

Volcanoes spewed lava and ash, ocean floors were thrust upward, sand and rock and shale settled into slurry.

Thanks to the shale revolution and new technology, locomotives could burn a lot cleaner and cheaper.

Thanks to the shale revolution, the U.S. has abundant supplies of natural gas.

They learned that many of the mountains were extinct volcanoes and admired the brilliant colored sandstone and shale formations.

The mud afterwards hardens, and becomes a kind of rock known as shale.

"These roads are very dusty," he remarked, wiping a splinter of fine shale from his own eyes.

All three were natives of the soil, and somewhat sluggish in nature, like its sticky red shale.

It is a dead land, mere shale and rock and crumbling earth, devoid of the riches which alone would make it habitable.