Sentences with phrase «of rock surfaces»

Professor Taçon said that, «As with the early art of Europe, the oldest Southeast Asian images often incorporated or were placed in relation to natural features of rock surfaces.
The abundance of cosmogenic He - 3 depends on the altitude of the surface and thus can be used to understand the altitude history of a rock surface.

Not exact matches

That's not to say that water is not abundant there - but it's so cold on Titan (with a surface temperature of -180 ℃) that water behaves like rock and sand.
Bouncing along the lunar surface in a four - wheeled rover, he and Charlie Duke collected 200 pounds of rock specimens.
The eruption is thought to have spewed almost 1 trillion gallons (3.7 trillion litres) of molten rock onto the surface, along with just as much sulphur into the atmosphere, triggering what researchers now call a «volcanic winter».
Investors and exchanges in South Korea were bracing themselves for what was understood as a potential government - issued ban on cryptocurrency trading; but conflicting reports from different parts of the government are now surfacing, leaving the global community rocking on its heels.
There were plenty of Tea Party rock stars who spoke at the event including Christine O'Donnell, who may have some explaining to do to social conservatives after comments about her dabbling in witchcraft surfaced over the weekend.
You can not be serious... if you are of the school of thought that God created the Earth, then you have to believe that he created the cycles that keep the Earth sustainable and able to provide life... storms move moisture and heat across the earths surface and stabilize our atmosphere, earthquakes and volcanic eruptions recycle the rock and minerals on the planet and make more usable land and add richness to soils.
It will be a long scientific analysis, but we will finally be able to see the original rock surface on which, according to tradition, the body of Christ was laid.
Moreover, the underlying rock is so far beneath the surface that roots of trees do not reach it to get minerals from there.
People believed that spring water — surfacing from underground, where it was purified by sand and rocks, to meet the light of day — was the cleanest source.
During occasional soliloquies such as this one, which happened on a very late and very liquid evening after Riggs had abandoned his training routine (he says he is now down to only 207 vitamin pills a day) and was imbibing generously of, first, bourbon on the rocks and then many Heinekens, more of his true feelings seem to surface.
As we heard from a Nike source after the scarlet version surfaced back on Dec. 9, the Bucks will rock white versions of these new College Football Playoff uniforms.
A regulation shuffleboard playing surface is made out of rock maple, weighs 484 pounds, takes a month to manufacture and is 20 feet 8 inches long.
Much of the land surrounding the airport is volcanic rock and looks more like the surface of the moon rather than a tropical paradise.
Village of Glencoe: $ 7,500 to upgrade about one - half mile of the Green Bay / North Shore Trail from a crushed rock surface to asphalt.
Yoruba says...» ole lo mo ese ole to lori apata» meaning it takes a thief to identifiy the footprint of a thief on a hard surface as on a rock».
Last summer Gov. Andrew Cuomo lifted the official moratorium on the controversial drilling technique, which involves shooting a high pressure mixture of water and chemicals into the shale rock deep below the Earth's surface.
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.
Hydrofracking relies on a high - pressure blend of chemicals, sand and water pumped deep underground to break up gas - bearing rock formations, freeing gas to rise up the well to the surface.
Yellowstone, like the Hawaiian Islands, is believed to lie on top of one of the planet's few dozen hotspots where light hot molten mantle rock rises towards the surface.
This creates just enough collisions to allow electrons to exchange from one to the next until they reach the end of the nanowire and transfer to the rock or metal surface.
The meteorite is made of volcanic rock, and the presence of water in it suggests that crustal rocks on Mars interacted with surface water that was delivered by volcanic activity, near - surface reservoirs or by impacting comets, Agee says.
«It gives us some insight into the connection between the slow circulation of near - solid rock in Earth's mantle caused by convection currents carrying heat upwards from the planet's interior, and observed active plate tectonics at the surface.
The meteorite, dubbed Northwest Africa (NWA) 7034, contains a concentration of water by weight about ten times higher than in any of the other 100 or so known Martian meteorites — those rare rocks that get ejected from the Martian surface into space when an asteroid hits the planet, and eventually find their way to Earth.
Thirty to forty rock and sediment core samples, each about 15 grams, will be hermetically sealed in titanium tubes and deposited in a safe location on the surface of Mars for possible retrieval by a future mission.
The finding confirms suspicions raised by a different experiment in 2012 that also suggested space rocks were not the source of water on the surface of the moon.
In mountaintop mining, companies use explosives and heavy machinery to clear away surface rocks and extract shallow deposits of high - quality coal.
But analyses of earthquake vibrations along Earth's surface have suggested that continents could run 200 or 300 kilometers deep, very gradually transitioning from cold, hard rock to hotter, gooier material.
Igneous rocks are formed by the cooling of magma (molten rock) which makes its way to Earth's surface, often leading to volcanic eruptions.
The icy deposits appear to be patchy and thin, and it's possible that they are mixed in with the surface layer of soil, dust and small rocks called the regolith.
The entry and crash would release iridium from the space rock, and iridium would waft across the globe and settle on Earth's surface, eventually becoming part of the very rock Alvarez held in his hand.
There is enough turnover so that rock is constantly cycling through; pieces of crust have probably reached all the way down to the bottom of the mantle, about 1,700 miles below the surface.
Puffs of gas and small amounts of rock can leak from a volcano before an eruption; the composition can indicate the presence of magma near the surface, which could mean an eruption is imminent.
While weather stations typically measure air temperatures just above the surface, satellites record the thermal energy emitted by soil, rock, pavement, grass, trees and other features of the landscape.
The surviving fragments from these impactors would have littered the ancient surface of the Moon, slowly becoming mixed with native soil and rock.
That introduces uncertainty because there is no high - resolution map of rock types across the entire surface of Earth.
Most volcanoes spew magma that forms when crustal plates collide and melt rock that lies some tens of kilometers below the surface.
Angrites are igneous rocks, many of which are thought to have erupted onto the surface of asteroids very early in the solar system's history and then quickly cooled, freezing their original properties — including their composition and paleomagnetic signals — in place.
And a November Nature study showed such rocks cover just 13 percent of Earth's surface.
He also adds: «The tidal effect on an asteroid, which rapidly rotates under the gravitational field of a planet, can fragment these objects or release large rocks from its surface, which could then become such dangerous projectiles at a local scale as the one fell in Cheliábinsk (Russia) on February 15th 2013.»
Eventually, the particles in the ring will disperse and continue their spiral into Mars's surface, with some of the larger bits — hunks of rock up to 2 kilometers across — blasting craters as much as 4 kilometers wide.
Hundreds of regions of magnetised rock dot the moon's surface, mostly on the far side.
My ChemCam laser zaps the surface with more than a million watts of power, turning rock or soil into glowing, electrically charged gas.
«Hopefully we'll be able to get some insight by looking at these rocks into some of the global changes happening that maybe no longer permitted a lake to be present on the surface,» says Abigail Fraeman, a research scientist at NASA's Jet Propulsion Lab.
«Its surface looks like clay, which is the result of an interaction between water and rock.
Honeycombs like the one pictured above plaster the surface of rocks around the world, but how they form has long been a mystery.
SAN FRANCISCO — NASA's Curiosity rover has caught a whiff of methane in Mars» atmosphere and has for the first time detected organic molecules in rocks on the planet's surface.
Deep beneath the bleached - out, dusty surface of the drought - stricken West is a stash of water sequestered between layers of rock and sometimes built up over centuries.
This is about the range scientists were expecting, but it's the first time anyone has managed to measure the exposure age of a rock on the surface of another planet.
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