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Tag: Mantle

"Lava" Earth's mantle

New research reenvisions Earth’s mantle as a relatively uniform reservoir

Effect of Al + H incorporation on the sound velocities of superhydrous phase B Schematic representation of the incorporation of aluminum together with water (as Al + H) in the crystal structure of superhydrous phase B. credit : Geodynamics Research Center, Ehime University

Water delivered to the mantle by aluminum enriched hydrated slabs?

Tiny mineral inclusions picture for the first time oxygen accumulated in the atmosphere and changed the composition of the mantle. Credit: Hugo Moreira / Nature Geoscience

New research reveals Earth’s ancient ‘breath’

Oxidised apatite inclusions. Credit: Dr Hugo Moreira

New research reveals connection between Earth’s atmospheric changes and mantle chemistry

Earth

Deep earthquakes could reveal secrets of the Earth’s mantle

Fragments of the Oued Awlitis 001 meteorites acquired by the Ludovic-Ferrière. Credit: University of Manchester

Donwilhelmsite : New mineral from the moon could explain what happens...

Basalt, the most-common rock on Earth’s surface, encases green crystals--a geologic "nesting doll" phenomenon called a xenolith. Basalts such as this one derive from a section of the mantle that has been depleted in incompatible trace elements, which is usually attributed to continental crust formation. In their work, Tucker and his collaborators propose another mechanism that would impart this signature. Credit: Carnegie Institution for Science

Probing the origin of the mantle’s chemically distinct ‘scars’

Ol Doinyo Lengai volcano in Tanzania, a source of carbonate-rich magma.

Geologists publish new findings on carbonate melts in Earth’s mantle

New Curtin University research on the remixing of Earth's stratified deep interior suggests that global plate tectonic processes, which played a pivotal role in the existence of life on Earth, started to operate at least 3.2 billion years ago. Credit: Professor Zheng-Xiang Li

Remixed mantle suggests early start of plate tectonics

Earth, core, mantle

Heavy iron isotopes leaking from Earth’s core

The inner core is likely composed of the hexagonal close packed phase of iron and located at the center of the Earth at pressures between 329 and 364 GPa and temperatures of ~5000 to ~6000 K. Credit: Ehime University

Is the Earth’s inner core oscillating and translating anomalously?

Calculated lattice thermal conductivity of MgSiO3 postperovskite (PPv) and bridgmanite (Brg) under the Earth’s lowermost mantle conditions. Credit: Ehime University

Heat transport property at the lowermost part of the Earth’s mantle

Structure layers of the earth.

Scientists Find Iron ‘Snow’ in Earth’s Core

This image shows the divisions between Earth’s layers. The ancient, continent-sized rock regions encircle the liquid outer core. Credit: Lawrence Livermore National Laboratory

New study suggests gigantic masses in Earth’s mantle untouched for more...

The mineral olivine contains melt inclusions (black dots), just a few micrometers in size. The geochemists isolated these inclusions and investigated the isotopic composition with mass spectrometers. Credit: Münster University - Felix Genske

Geochemists measure new composition of Earth’s mantle

A mineral map of a cumulate mineral sample.

How Earth’s mantle is like a Jackson Pollock painting

Snapshots of numerical modeling of the moon’s formation by a giant impact. The central part of the image is a proto-Earth; red points indicate materials from the ocean of magma in a proto-Earth; blue points indicate the impactor materials.

Magma is the key to the moon’s makeup

Sound waves reveal enormous diamond cache deep in Earth’s interior

Earth

Better model of water under extreme conditions could aid understanding of...

Earth's crust, mantle and outer core interactions.

New insight into Earth’s crust, mantle and outer core interactions

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