News tagged with mantle rocks

Diamonds show how Earth is recycled

Space & Earth / Earth Sciences

Jul 30, 2008 | 4.4 / 5 (21) | 0

(PhysOrg.com) -- Tiny minerals found inside diamonds have provided us with a rare glimpse of the Earth’s deepest secrets. This exciting new research by a team of scientists, led by the University of Bristol, ...

What goes down, must come up: Geoscientists offer new model for degassing of Earth's mantle

Space & Earth / Earth Sciences

May 27, 2009 | 3.8 / 5 (5) | 4

A new analysis of the processes that constantly stir the Earth's deep mantle is helping to explain how the mantle holds onto a portion of ancient noble gases that were trapped during the Earth's formation.

Journey to the center of the earth: Discovery sheds light on mantle formation

Space & Earth / Earth Sciences

Apr 11, 2008 | 4.3 / 5 (50) | 3

Uncovering a rare, two-billion-year-old window into the Earth’s mantle, a University of Houston professor and his team have found our planet’s geological history is more complex than previously thought.

The continents as a heat blanket

Space & Earth / Earth Sciences

Jan 22, 2009 | 3 / 5 (4) | 3

Drifting of the large tectonic plates and the superimposed continents is not only powered by the heat-driven convection processes in the Earth's mantle, but rather retroacts on this internal driving processes. In doing so, ...

Diamonds reveal deep source of platinum deposits

Space & Earth / Earth Sciences

Jun 11, 2008 | 4.4 / 5 (21) | 1

The world's richest source of platinum and related metals is an enigmatic geological structure in South Africa known as the Bushveld Complex. This complex of ancient magmas is known to have formed some two ...

The first new mineral with post-spinel structure is approved by CNMNC of IMA

Space & Earth / Earth Sciences

Sep 12, 2008 | 4.5 / 5 (2) | 0

Xiete is the first new mineral with post-spinel structure found by a Chinese-American team from the Guangzhou Institute of Geochemistry, Chinese Academy of Sciences and the Geophysical Laboratory, Carnegie Institution of ...

Water in Earth's mantle may be associated with subduction

Space & Earth / Earth Sciences

Aug 19, 2009 | 4.3 / 5 (10) | 3

A team of scientists from Oregon State University has created the first global three-dimensional map of electrical conductivity in the Earth's mantle and their model suggests that that enhanced conductivity ...

Rocks under the northern ocean are found to resemble ones far south

Space & Earth / Earth Sciences

Apr 30, 2008 | 4.3 / 5 (12) | 1

Scientists probing volcanic rocks from deep under the frozen surface of the Arctic Ocean have discovered a special geochemical signature until now found only in the southern hemisphere. The rocks were dredged ...

Research reveals secret to interaction between Earth's core and mantle

Space & Earth / Earth Sciences

Nov 28, 2007 | 4.6 / 5 (39) | 3

Leslie Hayden’s research into deep Earth interactions has led to some important findings, particularly for someone so new to the field, and the scientific world is paying attention. Hayden, a graduate student at Rensselaer ...

Atomic Particles Help Solve Planetary Puzzle

Space & Earth / Earth Sciences

Nov 10, 2009 | 4.5 / 5 (12) | 0

(PhysOrg.com) -- A University of Arkansas professor and his colleagues have shown that the Earth's mantle contains the same isotopic signatures from magnesium as meteorites do, suggesting that the planet formed ...

What lies beneath: new research looks deep into the centre of the Earth

Space & Earth /

Jan 20, 2006 | 4.6 / 5 (10) | 0

New research published this week on the evolution of volcanoes sheds light on what lies deep beneath the Earth's surface. The research, published in Nature, suggests that the plume of hot material that provid ...

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