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Latest Mantle Stories

2011-04-29 11:55:36

A team of scientists led by Rice University has figured out why the Colorado Plateau "“ a 130,000-square-mile region that straddles Colorado, Utah, Arizona and New Mexico -- is rising even while parts of its lower crust appear to be falling. The massive, tectonically stable region of the western United States has long puzzled geologists. A paper published today in the journal Nature shows how magmatic material from the depths slowly rises to invade the lithosphere -- Earth's crust and...

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2011-03-24 11:00:49

Researchers are hoping to attempt to drill into the Earth's mantle layer off the coast of Costa Rica in hopes of finding pristine samples of the earth's inner boundary, BBC News reports. With initial bore holes to reach 1.2 miles under the seabed to test equipment and techniques, the ultimate goal is to reach even further to retrieve deeper samples. It is estimated that at the chosen location, a drill must be able to reach almost 4 miles under the sea floor to reach the upper mantle....

2011-01-13 17:49:30

The continental crust is the principal record of conditions on the Earth for the last 4.4 billion years. Its formation modified the composition of the mantle and the atmosphere, it supports life, and it remains a sink for carbon dioxide through weathering and erosion. The continental crust therefore has had a key role in the evolution of the Earth, and yet the timing of its generation remains the topic of considerable debate. It is widely believed that the juvenile continental crust has grown...

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2011-01-06 14:57:45

The Moon, Earth's closest neighbor, has long been studied to help us better understand our own planet. Of particular interest is the lunar interior, which could hold clues to its ancient origins. In an attempt to extract information on the very deep interior of the Moon, a team of NASA-led researchers applied new technology to old data. Apollo seismic data was reanalyzed using modern methodologies and detected what many scientists have predicted: the Moon has a core. According to the team's...

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2010-12-17 08:34:52

By Louis Bergeron, Stanford University A new method of capturing detailed, three-dimensional images of minute samples of material under extreme pressures is shedding light on the evolution of the Earth's interior. Early results suggest that the early Earth did not have to be entirely molten to separate into the rocky crust and iron-rich core it has today. Researchers at Stanford University and SLAC National Accelerator Laboratory are leading the group pioneering the technique, which could...

2010-12-14 23:56:21

While there continues to be considerable debate among geologists about the availability of oxygen in the Earth's mantle, recent discoveries by a University of Rhode Island scientist are bringing resolution to the question. Analysis of erupted rock from Agrigan volcano in the western Pacific near Guam found it to be highly oxidized as a result of its exposure to oxygen when it formed in the Earth's mantle. When, over millions of years, seafloor rocks are transported back into the Earth's...

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2010-10-27 14:03:49

Researchers at the University of Bristol reveal today in the journal Nature that they have developed a seismological "Ëœspeed gun' for the inside of the Earth. Using this technique they will be able to measure the way the Earth's deep interior slowly moves around.  This mantle motion is what controls the location of our continents and oceans, and where the tectonic plates collide to shake the surface we live on. For 2,900 km (1800 miles) beneath our feet, the Earth is made of...

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2010-09-25 06:40:00

Scientists have wondered for some time why certain seismic waves travel more quickly through the core-mantle boundary, a thin layer of the Earth's interior that lies between about 1675 and 1800 miles below the surface. Now a new study by Yale University and the University of California, Berkeley sheds light on the mystery by showing how this region behaves under the extreme conditions found so deep in the Earth. The findings, which appeared in the Sept. 24 issue of the journal Science, have...

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2010-09-18 08:14:00

The Earth's mantle and its core mix at a distance of 2900 km under our feet in a mysterious zone. A team of geophysicists has just verified that the partial fusion of the mantle is possible in this area when the temperature reaches 4200 Kelvin. This reinforces the hypothesis of the presence of a deep magma ocean. The originality of this work, carried out by the scientists of the Institut de min©ralogie et de physique des milieux condens©s (UPMC/Universit© Paris Diderot/Institut...

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2010-09-03 14:03:42

Earth today is one of the most active planets in the Solar System, and was probably even more so during the early stages of its life. Thanks to the plate tectonics that continue to shape our planet's surface, remnants of crust from Earth's formative years are rare, but not impossible to find. A paper published in Nature Sept. 2 examines how some ancient rocks have resisted being recycled into Earth's convecting interior. Throughout the world there exist regions of ancient crust, referred to...


Latest Mantle Reference Libraries

Kelp Scallop, Leptopecten latiauratus
2013-04-16 20:25:12

Leptopecten latiauratus, the common name being the kelp scallop, is a small saltwater clam, a bivalve mollusk belonging to the family Pectinidae. It resides in water up to 850 feet deep. Similar to other scallops, it has many small primitive eyes around the rim of its mantle and escapes its predators by jet propulsion. The shell can be anywhere between 3 to 5 centimeters in size. It is mostly circular with two flat auricles or ears that extend off of the hinge. It usually has ridges that...

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2004-10-19 04:45:40

Earth -- in geology and astronomy, fifth largest planet of the solar system and the only planet definitely known to support life. Gravitational forces have molded the earth, like all celestial bodies, into a spherical shape. However, the earth is not an exact sphere, being slightly flattened at the poles and bulging at the equator. The equatorial diameter is c.7,926 mi (12,760 km) and the polar diameter 7,900 mi (12,720 km); the circumference at the equator is c.24,830 mi (40,000 km)....

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Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.