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Home > News > Tags > mantle
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A new investigation infirms theories that have been in circulation for years, claiming that our planet' outer core contains substantial amounts of oxygen. The recent study indicates that to be false, and proposes that only traces of the element can be found at that location. Granted, uncovering the chemical na... |
25 November 2011
08:49 GMT |
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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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In a groundbreaking new research, investigators were able to determine the existence of a new, previously-unstudied force that acts on our planet's tectonic plates, leading to their interactions. This newly-found mechanism allows geologists and seismologists to gain a new perspective on the tectonic interplay ta... |
7 July 2011
04:11 GMT |
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After so many years of wondering about this geologically-remarkable chain of Pacific Ocean islands, experts now finally managed to get a clearer picture of what's hiding underneath Earth's crust there.Usually, volcanic archipelagos such as this one – featuring both active and inactive volcanoes &ndash... |
27 May 2011
06:03 GMT |
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According to the conclusions of a new scientific report, it would appear that the interior of the Moon is equally as wet as Earth's. The discovery comes on the heels of another shocking finding, which indicates that the surface of our natural satellite may be as wet as the Sahara Desert.
While this may not s... |
27 May 2011
02:04 GMT |
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British researchers at the University of Leeds propose in a new study that the planetary core is undergoing two interesting processes at the same time. According to the data the experts obtained, it could be that the core is both freezing and melting simultaneously.Conclusions such as this, the team reveals, can be d... |
19 May 2011
05:46 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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Isotopic ratio analyses conducted on old raindrops have revealed that the onset of a large wave of mountain building began more than 49 million years ago in British Columbia, Canada. The work also showed that the phenomenon then began rolling southwards, towards Mexico.
The ancient raindrops that were used to deri... |
18 December 2010
05:49 GMT |
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A team of researchers has produced a new method of analyzing the inner parts of the plant using seismic waves, in an approach similar to creating a seismological CAT scan. This could help shed more light on the behavior of volcanoes, and on the phenomena underlying earthquakes. Geologists are very excited about the n... |
5 November 2010
06:56 GMT |
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According to a new investigation, it would appear that the long-held theory stating that tectonic plates carry water from the surface deep underground. The new work shows that water penetrates only about 400 kilometers in the mantle. Our planet is made up of three large layers – the core, the mantle and the cru... |
19 October 2010
09:54 GMT |
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Propositions for missions to analyze the Earth's interior are currently exhibiting a spike in numbers, with experts believing that what may have looked like science-fiction only a few years ago might become true.Scientists have thus far poked and prodded in virtually all environments imaginable, from the deep oc... |
21 September 2010
01:32 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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In a finding that may help explain the volcanic activity taking place in Yellowstone National Park, investigators managed to discover a plume of molten rock rising to the surface. They found the formation deep underground, right below the supervolcano. The new data could also be used to explain the various tectonic p... |
8 September 2010
06:00 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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A team of geologists has recently determined that the North American tectonic plate is not made up of a single, solid piece, but of several layers, which alternate new and old rocks.The finding could have important consequences for the field of tectonic studies, which are used to predict the risk an area has of exper... |
1 September 2010
10:23 GMT |
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Over the past few years, increasingly complex computer models have began painting interesting pictures of how the insides of our planet looks like, and that view is continuously getting better. Though it may seem unmovable, the ground is in fact floating on an ocean of molten rock called magma. This layer of the plan... |
27 August 2010
02:50 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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Scientists have been wondering where the massive Banda Arc originated from for decades. The immense, arc-like fold in our planet's crust is located at the intersection of some major tectonic plates, but until now no research team was able to explain the processes that led to its formation. The geological mystery... |
6 August 2010
11:09 GMT |
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Scientists from the University Joseph Fourier (UJF), in Grenoble, believe that our planet's solid core may be caught in an endless loop of melting and liquefying. The processes partially affect the innermost, solid core, in the sense that the entire structure is moving through the mantle. As it does so, the team... |
5 August 2010
06:06 GMT |
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Scientists previously estimated Earth's age at 4.537 billion years. More recently they have revised this statement by saying that the forming of the planet took a bit longer and Earth is actually 70 million years younger. Not that it makes a huge difference to the common mortal, but the way researchers got ... |
12 July 2010
07:02 GMT |
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As the Apollo program unfolded, astronauts who went on lunar missions brought back important amounts of Moon rocks for studying. This diversity of materials allowed geologists to draw a clear picture of the minerals that can be found on our planet's natural satellite, but what it didn't do was help investig... |
5 July 2010
08:07 GMT |
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The Himalaya mountain range is undoubtedly the most impressive in the world, even if only for the fact that it contains the six tallest massifs in the world. Notable among these is Mount Everest which, at its 8,848 meters (29,029 feet), exceeds any other mountain in the world. But the range itself was formed followin... |
14 June 2010
04:16 GMT |
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According to a new series of scientific observations, the Earth's mantle is moving faster in some spots than researchers first calculated. The mantle is the layer of molten rock that covers the planet's solid core, and lies just beneath the tectonic plates on which Earth's oceans and continents lie. Re... |
20 May 2010
07:02 GMT |
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As scientific instruments become more sensitive to measurements, the accuracy of scientific studies increases as well. But more precision equals more questions, as issues that had once been concealed by the lack of proper equipment are now starting to show and challenge existing theories. One such instance is represe... |
12 May 2010
05:38 GMT |
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Our planet is known to have a core, but not many people know that this central, molten region is also divided in two parts – the inner and outer cores. In a new scientific study, it was demonstrated that the outer core was indeed influenced by decade-long stirring motions, which kept it churning. This was hypot... |
23 December 2009
07:03 GMT |
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The US Hawaii Islands are located on top of a very sensitive tectonic and volcanic center, which is part of the Ring of Fire, the hypothesized circle that surrounds the Pacific Ocean. This area features intense volcanic activity, as well as earthquakes, all caused by the subduction processes that take place between t... |
4 December 2009
03:04 GMT |
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The molten core of our planet is entirely engulfed in the mantle, the second, thickest layer of magma that supports the crust. The latter is simply the skin of our planet, a layer just a few kilometers thick at its largest point, on which everything we know, continents and oceans included, lie. But there are also sig... |
28 November 2009
07:11 GMT |
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Scientists from the University of Arkansas (UA) have recently released a new report, claiming that the entire planet might have been formed out of meteoritic materials. They base their claims on the fact that the Earth's mantle exhibits the same set of isotopic signatures for magnesium as asteroids do, which wou... |
11 November 2009
05:02 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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In a mind-boggling piece of engineering achievement, experts at the University of California in Davis (UCD) used a supercomputer to model the early stages of the Earth's crust, back in the days when the planet was just solidifying from an incandescent ball of red-hot lava. The goal of the simulation was to under... |
16 June 2009
21:31 GMT |
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According to scientists, mantle plumes are stretches of enormously hot rocks that can be found in the Earth's mantle. They come from tremendous depths, and some hypothesize that a few of the mantles originate from parts very close to the planet's core. The hot rocks are responsible for a lot of features on ... |
6 April 2009
03:51 GMT |
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Everyone knows that the world's oceans and seas are subjected to tidal forces, which make them go up and down two times per day. But what's a little less known is the fact that the ground also follows a similar pattern, moving under the influence of the Sun and the Moon. Its variation can measure as much as... |
30 January 2009
02:23 GMT |
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As a result of decades of studies, Mars' dichotomous landscape is now common knowledge for scientists. It is known, for instance, that the mountainous southern hemisphere rises some 6 km (3.73 miles) above the smooth northern one, and it's much thicker. This, together with the planet's peculiar magneti... |
17 December 2008
03:33 GMT |
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The molten rock inside the planet's mantle is in continuous motion as heat is convected from the inner regions towards the outer ones, forming the so-called convection cells where the hot material is being pushed upwards and the colder one falls back down in the vicinity of the core. The motion of this material ... |
3 July 2008
09:59 GMT |
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Most of the platinum metal extracted around the world comes from the Bushveld Complex located in South Africa, a region believed to have been created out of ancient magma some two billion years ago. However, why that particular area is so rich in platinum and other related metals remained a topic open for debate for ... |
12 June 2008
05:30 GMT |
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The previous model regarding Earth's interior put things very simply. The Earth is made up of several distinct layers sitting on top of each other. The first and outermost layer is the crust, spanning over 25 kilometers towards the center of the planet. Next comes the mantle, a thick, dense layer of silicate roc... |
5 May 2008
09:48 GMT |
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During the fly-by around Mercury, the Mercury Surface, Space Environment, Geochemistry and Ranging, or MESSENGER, observed what seemed to be scalloped edged cliffs which had been mostly created by the shrinking action of the planet as it cooled in time. The same evidence has been observed by the Mariner 10 orbiter du... |
18 March 2008
09:36 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 Earth's mantle can stretch up to 2,900 kilometers below the surface, thus the only way to study it is to conduct measurements on the speed of seismic waves which travel through it, in order to determine the rough composition and density. However, a new research conducted relatively recently has shown that ag... |
25 January 2008
08:32 GMT |
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Recently an alternative theory designed to contest the notion that Earth's mantle, the layer between the outer crust and the inner core, might have been solid, suggests that instead it could have consisted of a thick magma 'ocean', slowly flowing beneath the surface.Evidence collected from seismic even... |
6 December 2007
03:47 GMT |
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