Sentences with phrase «existing cracks in the rock»
Within 20 seconds, a chemical reaction causes a hydrogel to form, expanding the fluid up to 2.5 times its original volume, expanding existing cracks in the rock and creating new ones.
https://www.sciencedaily.com/ Not exact matches
One way is extrusion, in which magma erupts through volcanic craters and cracks in the Earth's surface; the other is intrusion, whereby magma forces itself between or through existing formations of rock, without reaching the surface.
A world - class climber since his student days, Reppy is famous for his invention and promotion of clean - climbing techniques, in which the nuts that hold the rope are wedged into existing, natural cracks in rock faces rather than banged in like pitons.