Articles tagged "earth's mantle"

structure of the earth ft img march 14 2020

Earth's early magnetic field may have been produced by its mantle, not core

A new study published in Earth and Planetary Science letters supports the concept that the Earth's early magnetic field was generated by its mantle, not its core. A new study conducted by researchers Dave Stegman, Leah Ziegler, and Nicolas Blanc provided more...

March 15, 2020

earth water comes within

Earth's water comes from within

A new study published recently in Earth and Planetary Science Letters suggests that much of our planet's water comes from within, rather than arriving from space through collisions with ice-rich comets. The study also suggests that chemical reactions responsible...

February 02, 2017

water deep earth featured

Water reservoir detected 1 000 km below Earth's surface

Scientists have discovered water about 1 000 km (620 miles) below the Earth's surface. The discovery suggests our planet's mantle may contain much more water, and at much bigger depths, than previously thought. The water reservoir was found about one-third...

November 29, 2016

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Earth’s mantle moves up and down “like a yo-yo”

Researchers have compiled the first global set of observations of the movement of the Earth’s mantle – the 3000-km-thick layer (1 864 miles) of hot silicate rocks between the crust and the core – and found that it is moving much faster than has...

May 11, 2016

mantle_feat

A key to understanding unusually high electrical conductivity in Earth's mantle

New research, conducted in collaboration with the Lawrence Livermore National Laboratory (LLNL), Laboratoire Magmas et Volcans, Université Blaise-Pascal, Clermont-Ferrand, France and Florida State University, discovered the chlorite dehydration process is a...

May 10, 2016

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New research indicates different composition of Earth's mantle

Seismic observations of our planet's interior have revealed three distinct structures, marking the boundary between its metallic core and silicate mantle. The structures include remnants of subducted plates from the Earth's surface, ultralow velocity zones...

December 15, 2015

earth_drill_feat

Drilling into Earth's mantle, a holy grail of geology, set to begin once again

An old challenge - geology's holy grail of drilling into the Earth's mantle - is set to begin once again, as a group of experts heads out for the Atlantis Bank, Indian Ocean to drill through 1.5 kilometers (0.93 miles) of rock, collecting core samples on its...

December 05, 2015