Sentence examples for rock broken by from inspiring English sources

Volcanic blocks are usually older rock broken by the explosive opening of a new vent.

The Greta gorge is still as Scott described it: The river runs with very great rapidity over a bed of solid rock, broken by many shelving descents, down which the stream dashes with great noise and impetuosity..

Lithic morphology in ash is generally controlled by the mechanical properties of the wall rock broken up by spalling or explosive expansion of gases in the magma as it reaches the surface.

However, most of the rock samples available to those engaged in finding and developing hydrocarbon resources are in the form of "cuttings". Cuttings (Baker, 1979) are the small pieces of rock broken up by the drill bit and brought to the surface by the fluid which lubricates the drill bit and removes the cut rock from the bottom of the drill hole.

The surface is stony and rocky, with great accumulations of friable rock, broken up by frost weathering in the intensely cold climate occurring at such high elevations.

Coral islands created by accretion have developed from rubbly reef rock broken off from the reef by storms and waves and mixed with finer reef detritus.

The non-spherical single cone bit is a new type of cone bit designed on the basis of the spherical single cone bit; the new cone bit performs rock breaking by shocking and scraping to achieve a good effect on hard strata.

This regolith, which is made up of fragments of rock broken from the moon and other celestial bodies, undergoes chemical changes caused by the granular phenomenon.

Hydrothermal jet technology is a new drilling method in which the rocks are broken by the combination of thermal spallation and high velocity impact effect.

In places where the overlying impermeable rocks are broken by joints or faults, water may escape through them to rise to the surface as artesian springs.

Even the best of them were narrow, poorly drained, and surfaced only with gravel or rocks broken laboriously by hand, and worked into the dirt roadbed by the traffic passing over.