Sentences with phrase «underground rock layers»

Not exact matches

He said while some hyrofracking chemicals are toxic and carcinogenic, public exposure to such chemicals is manageable, and that there are no known cases of the chemicals — which are injected deep underground a mile or more to fracture gas - bearing rock layers — reaching the surface to contaminate water or air.

Because different noble gases move at various speeds through rock and water, the proportions present revealed that although the gases had come from deep underground, they had arrived directly rather than percolating through layers of rock and water (PNAS, DOI: 10.1073 / pnas.1322107111).

Then the CO2 can either be used (see «Don't junk CO2, turn it into bottles and glue «-RRB- or pumped underground, beneath impermeable layers of rock (see diagram).

After that it's off to the storage wells where the fluid CO2 is further compressed to more than 2,000 psi and pumped a mile and a half underground where it's injected into the pores between grains of rock in a layer of sandstone laid down some 440 million years ago.

Whether it comes from an underground spring or from an artesian well, spring water is the product of rain and snow filtered through layers of rock, where it picks up all sorts of valuable minerals that are good for you.

The specifics: «Artesian water comes from a well that taps a confined aquifer - a water - bearing underground layer of rock or sand - in which the water level is at the top of the aquifer.»

Luminous rays of gold, green, and blue poked through holes on the caves» roof.Dreamgate was so captivating, I forgot that I was underground and underwater, with a layer of rock between me and air.

According to Oddity Central, the restaurant's customized grill was a bit of an architectural feat: in order to bypass the problem of not being able to build conventional foundations due to the heat underground, architects Eduardo Caceres and Jesus Soto used nine layers of volcanic basalt rock to make a suitable cooking pit.

As part of its survey, the USGS excluded areas of the country that are considered freshwater sources, and limited their assessment to rock layers at depths at which the carbon dioxide would be under sufficient pressure to remain in a liquid state, which would help the carbon dioxide mix in with the briny water found underground.

For one thing, saving large open spaces protects the local aquifer, the underground layer of rock that stores rainwater and melting snow, and our prime source of drinking water.