These could be places where water flowed
through cracks in the rock, leaving mineral deposits behind, although the rover has not yet measured their composition.
Only a small portion of Coba has been excavated and many of the structures remain hidden in the jungle, overgrown with jungle vegetation, while the ruins that have been partially excavated continue to have trees and plants growing
through cracks in the rocks.
«I am fascinated by the movement of water — the way it flows
through cracks in the rocks, laps at a sandy beach, and breaks into a wild display on rocky cliffs.
Not exact matches
«The total energy from an earthquake includes energy required to create new
cracks in rock, energy dissipated as heat
through friction, and energy elastically radiated
through the earth,» reports the U.S. Geological Survey's Earthquake Hazards Program.
LIKE water draining from an unplugged bathtub, meltwater flowing
through deep
cracks in the Martian
rock may explain the origins of the enormous Hebes Chasma canyon.
Was it
rock grinding on
rock, ice groaning over ice, or, perhaps, hot gases and liquid
rock forcing their way
through cracks in a volcanic complex?
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.
Another wild card is methane, which inevitably seeps out during the extraction process, escaping from imperfect joints on thousands of pipes, valves, compressors, and holding tanks, or simply migrating
through hairline
cracks in the
rock.
In Northern California, AltaRock Energy hopes to become the first of many developments to produce geothermal energy by fracturing
rock at the bottom of a deep hole and then circulating water
through the
cracks to generate steam.
The new pumps are critical for «enhanced geothermal systems,»
in which energy is produced by fracturing dry
rock at the bottom of a deep hole and then circulating water
through the
cracks to generate steam.
When rainwater is introduced to this kind of
rock, either seeping
in through tiny pores
in the
rock surface, or, more typically, dribbling
in through larger
cracks, the
rock will begin to dissolve.
As this water moves
through rocks, it dissolves salt compounds and pushes
through fractures
in the overlying ice to form reservoirs closer the moon's surface, where it is expelled into space when the outermost layer of the crust
cracks open and the resulting depressurization of these reservoirs causes water vapor and ice particles to shoot out
in the observed plumes.
School grounds should be inspected for potential hazards such as: • Verandah poles outside doorways,
in thoroughfares or
in situations where students are unlikely to see them, especially while running; • Steps and changes
in level which are poorly proportioned, difficult to see or lack handrails; • Fencing, gates and railings which students climb and which have structural problems, sharp protrusions, splinters or other hazards; • Trip hazards at ground level — protruding drainage pit covers, irregular paving,
cracks or tree roots
in thoroughfares, broken off post or other remnants of old structures; • Loose gravely surfaces on slopes and where students run; • Slippery patches which may stay damp
in winter; •
Rocks which students can fall onto or throw around; • Embankments which students can slip down or which have protruding sharp objects; • Blind corners
in busy areas; taps and hoses which are positioned where students play or walk; window glass at low levels
through which students could fall; • Holes,
cracks or exposed irrigation fixtures
in ovals; • Trees or shrubs with poisonous parts, sharp spikes or thorns or branches at eye level; • Splinters and deteriorating timbers
in seats, retaining edges and other wooden constructions; • sSeds or other areas with hazardous chemicals or machinery to which students have access; rubbish skips which students can climb into or around, or which place students at risk when trucks enter the school; • Areas within the site used for car parking when students are present; and, • Sporting equipment such as goal posts or basketball rings which have structural or other design or maintenance problems.
The audio
in game is great too, everything from the sounds of the trucks, to the ambient sounds of the surroundings and the crunching and
cracking of trees and
rocks as you drive over,
through and around the map.
Taking advantage of an accidental
crack in the marble slab Joo applied his favorite silver nitrate, which
in turn formed to its marks and stains traveling
through the pores of the metamorphic
rock's surface, reminiscent of a bleeding body wound with metallic stitches bonding it together.
Fracking (hydraulic fracturing)
rock fracturing with pressurized liquid creating
cracks in deep -
rock formations
through which shale gas, oil, tight gas and brine will flow more freely... major part of the Golden Age of Gas
Numerous processes contribute to this, including the removal of buttressing ice shelves (i.e., ice tongues floating on water but
in places anchored on islands or underwater
rocks) or the lubrication of the ice sheet base by meltwater trickling down from the surface
through cracks.
As the surface ice begins to melt, some of the water filters down
through cracks in the glacier, lubricating the surface between the glacier and the
rock beneath it.
But fracking, which involves the high - pressure injection of water or a fluid mixture into a borehole to create
cracks in deep -
rock formations
through which gas or petroleum can flow, is inherently dangerous.
The radioactive gaseous result of uranium breaking down into soil, water or
rock, radon can enter the home
through cracks and holes
in the foundation, support posts, floor drains, construction joints and other entry points.