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Home > News > Tags > crust
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Standard plate tectonics theory holds that the planetary crust gets submerged at subduction zones. It then gets decomposed and recycled, with new crust forming in specialized areas called ridges. A new study has now determined that the recycling can occur in the lower mantle as well. Our planet is divided into three ... |
16 September 2011
08:13 GMT |
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For many years, experts have been trying to figure out how is it that the Colorado plateau formed. Though they conducted a large number of studies, the issue still remained cloudy. Now, a theory is proposing an interesting approach to looking at this issue. Landscape features such as the Grand Canyon and Monument Val... |
3 May 2011
08:23 GMT |
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Researchers in the United States are now using Global Positioning System (GPS) measurements to gain additional insight into how oceanic tides are influencing the surface of the planet. The amount of stress they must place on Earth's crust is tremendous, scientists suspect, and GPS is here to help them.For most, ... |
15 April 2011
10:44 GMT |
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For more than a century, geologists and planetary scientists have known about the existence of the Moho boundary, but the technological challenges associated with studying it prevented experts from gaining any new knowledge about it since then. Now, advancements allow us to investigate it in-depth.This boundary, whic... |
24 March 2011
06:08 GMT |
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Experts were finally able to shed some light on a complex geological puzzle that has been keeping this field of research from progressing for decades. The team, based in the UK, found that quartz crystals play a fundamental role in underlying the behavior of tectonic plates. Our planet is formed from three layers, th... |
17 March 2011
11:03 GMT |
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A collaboration of experts from NASA and a number of European partner institutions announce that they have just finished a new study on how water is transported on Earth's surface. At the same time, the investigation was also oriented on determining how the solid crust that covers our planet responds to the retr... |
15 September 2010
10:08 GMT |
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Geologists have recently determined that some portions of the original crust that covered the planet when it first solidified somehow managed to escape being recycled in Earth's mantle.This means that, if they know where to look for them, researchers could uncover remnants of the crust that appeared in the plane... |
3 September 2010
11:06 GMT |
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Experts recently discovered what may very well be a remnant of a primitive Earth mantle. The reservoir was identified in the Canadian Arctic, on the Baffin Island. The team that made the finding was led by geologist Matthew Jackson, who is based at the Boston University. Details of the discovery were published this w... |
12 August 2010
06:09 GMT |
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Beneath the planet's surface, there lies a wealth of mineral diversity, with materials featuring elements that are extremely rare to come by and that cannot be found inside the crust. For a very long time, geologists have been puzzled by how these chemicals came to exist on the Earth, when geological records poi... |
19 October 2009
03:57 GMT |
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Thanks to the dedication of researchers and experts from the Oregon State University (OSU), we now have the first full map of the electrical conductivity in the Earth's mantle, at a global scale, and in 3D. The find could have some of the most useful applications, such as using disruptions in electrical conducti... |
20 August 2009
06:14 GMT |
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Scientists have taken a new step in better understanding the complex and intricate processes that go on under our planet's crust, when they have recently discovered the first Earth pump, which they say plays a crucial role in the formation of ore deposits, and in creating the best conditions possible for earthqu... |
19 June 2009
07:02 GMT |
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Studying the temperature and heat conductivity patterns that exist under the Earth's crust, some 30 to 40 kilometers beneath our feet, is not an easy task, mostly because of the way rocks influence each other when subjected to high temperatures. Heat is transmitted from one to the other not only through contact,... |
31 March 2009
04:54 GMT |
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Another lucky strike for science came in the form of an accidental discovery of magma, following the drill operations conducted in Hawaii by a commercial geologist. Magma has never before been studied in its original form, and the many computer models were built based on the properties inferred from its cooler, gas-f... |
17 December 2008
08:25 GMT |
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We know how the seven continents are arranged today and we are aware (and it's easy to observe) that they were once grouped up in a single, massive continent, called Pangaea. But what's the mysterious force that caused the division of the continents and keeps moving them apart? New studies associate the con... |
16 December 2008
10:52 GMT |
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Although the birth of an ocean is an extremely rare phenomenon on the largest of historical scales, the geophysics is currently experiencing such an event. Even more dazzling, this occurs in one of the Earth's most inhospitable and arid regions, the Afar Depression in Ethiopia.The African continent is literally ... |
1 October 2008
05:20 GMT |
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Ten years ago, researchers discovered that Earth gives off a constant humming sound, basically imperceptible to the human ear which cannot hear sounds with a frequency below 16 Hertz, and called it the Earth's hum. The sound continues to make itself heard to seismometers even when there is no seismic activity in... |
17 April 2008
08:08 GMT |
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A new study argues that by exerting extreme levels of pressure on insulating crystals, they could be turned into excellent electrical conductors. Manganese oxide, a mineral found in Earth's crust is not an electricity conductor under normal atmospheric pressure and temperature conditions, but, when subjected to ... |
6 February 2008
04:11 GMT |
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The theory of the plate tectonics and continental drift was accepted in the '60s, when the proofs came from the ocean. Earth's external layer is called lithosphere. It is a rigid blanket with a thickness of about 100 km (62 mi). It includes both the oceanic platform and the continental crust, but also the u... |
23 January 2008
14:06 GMT |
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Norwegian researchers have just found the oldest known chunk of Earth crust, located in Greenland, and aged at least 3.8 billion years. It is an ophiolite, an originally oceanic crust that was lifted and exposed within continental crust, that's why it's the best evidence yet that plates have been moving acr... |
23 March 2007
08:39 GMT |
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