For many years geophysicists have argued over the perplexing mystery regarding the amount of silicon in the Earth's mantle that is thought to have arrived there via impacts with asteroids.
(Phys.org) -- Defects found in rocks below the Earth’s surface have a major impact on the transmission of seismic waves, such as those caused by earthquakes, researchers at The Australian National University have discovered.
Earth Sciences
Apr 23, 2012
0
0
Plate tectonics, the dominant process shaping Earth as we know it today, may not have existed throughout Earth's history.
Earth Sciences
Mar 28, 2012
0
1
German geologists from the Universities of Bonn and Cologne have demonstrated new scientific results in the April issue of the scholarly journal Geology, which provide a new theory on the earliest phase of continental formation.
Earth Sciences
Mar 12, 2012
0
0
The first global high-resolution map of the boundary between Earth's crust and mantle – the Moho – has been produced based on data from ESA's GOCE gravity satellite. Understanding the Moho will offer new clues into ...
Earth Sciences
Mar 9, 2012
2
0
(PhysOrg.com) -- For most of modern science, researchers have believed that the Earth was primarily made up of enstatite chondrites, a subclass of meteorites. This was because of the similarity of chromium, nickel and oxygen ...
Swiss scientists have for the first time succeeded in realistically simulating how an oceanic plate sinks of its own accord under an adjacent plate. At the same time they showed why only one of the plates rather than both ...
Earth Sciences
Feb 23, 2012
0
4
Unexpected new findings by a University of Maryland team of geochemists show that some portions of the Earth's mantle (the rocky layer between Earth's metallic core and crust) formed when the planet was much smaller than ...
Earth Sciences
Feb 18, 2012
6
0
Although solid, the rocks of the Earth's mantle deform very slowly. Professor Patrick Cordier's team at the Materials and Transformation Unit (Université Lille, France) has developed a model that makes it possible, over ...
Earth Sciences
Jan 24, 2012
0
0
A new agreement between Macquarie University and the Australian Nuclear Science and Technology Organisation (ANSTO), will help us better understand everything from where earthquakes might occur to where gold is deposited.
Earth Sciences
Nov 22, 2011
0
0
