Scientists at Scripps Institution of Oceanography at UC San Diego have found a layer of liquefied molten rock in Earth’s mantle that may be acting as a lubricant for the sliding motions of the planet’s tectonic plates. This discovery has very far reaching implications, which can solve some of the long standing geological puzzles, as [...]
Magma forms much deeper than geologists previously believed, according to a new study conducted by Rice University. Magma and Crust The group led by geologist Rajdeep Dasgupta put very small samples of peridotite under very large pressures, to find out if the rock can liquify, at least in small amounts, as deep as 250 [...]
The Japanese scientific deep sea vessel Chikyu managed to set a new world record by drilling down to over 2.200 meters below the seafloor, obtaining samples from Shimokita Peninsula of Japan in the northwest Pacific Ocean. Drilling for science Whenever you hear about drilling, it’s almost always about oil. Given the humongous amount of oil [...]
Ever since researchers started studying the Earth’s spin, they noticed that the spin isn’t perfect. Many believe this is a result of the different elements in the Earth’s core, mantle and crust, which have different densities and generate different friction. Most researchers studying this wobble agreed that the mantle would have to respond to the [...]
It wasn’t just a devastating asteroid that killed off all the dinosaurs 65 million years ago. Scientists from Boston University now claim that a massive eruption of lava fronts around the world, coinciding with the asteroid impact, sealed their fate forever. The controversial theory is betting on two unusually hot blobs of mantle 1,700 miles [...]
Scientists have for the first time determined the actual permeability of the asthenosphere in Earth’s upper mantle, which is basically responsible for how fast the melt rises towards the surface of the earth, and the results were surprising to say the least. Researchers found that it actually moves 25 times faster than previously assumed, which [...]
Thu, Mar 21, 2013
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