|
Home / News / Tags / mantle
|
|
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 |
 |
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
|
|
