mantle

Flawed, Precious Stones Carry Clues From Deep in the Mantle

Earth’s oxygen-rich atmosphere creates extremely oxidizing conditions at the surface. Anyone who has seen rusty metal has observed oxidation in action: the oxygen steals electrons from the metal, creating crusty, red, iron oxide. Within Earth’s core, however, low levels of oxygen create much more reduced conditions. Intuitively, many researchers have supposed that Earth’s layers become less oxidized with depth, but few samples have emerged from the deep Earth to support or disprove this idea.

Showing 21-30 of 111 results
Hydrocarbons Form Surprisingly High Up in Earth’s Mantle 21 August 2017 Feature

Rather than forming from living material, abiogenic hydrocarbons form from inorganic reactions…

Siderite
Stable Iron Carbonates Survive Journey to Earth’s Interior 19 July 2017 Feature

In a new paper in the journal Nature Communications [1], Valerio Cerantola (European Synchrotron…

A New Source of Hydrocarbons in the Deep Carbon Cycle 12 June 2017 Feature

Due to its ubiquity on the surface, acetate could end up in the deep subsurface through subduction…

Complex Analysis Yields Simple Estimate of Carbon Dioxide Trapped in the Lithospheric Mantle 25 May 2017 Feature

A new study combines existing analytic techniques to estimate the amount of carbon dioxide stored…

Nitrogen Exposed as a ‘Chameleon’ Element 25 May 2017 Feature

A trio of DCO members, Sami Mikhail (University of St. Andrews, UK), Peter Barry (University of…

Study Finds Core Formation Not Responsible for Earth’s Iron Anomaly 19 April 2017 Feature

A group led by DCO Extreme Physics and Chemistry Community Member Jung-Fu Lin (University of Texas…

Nickel May be Magic Ingredient in Planetary Core Formation 18 April 2017 Feature

While investigating lighter element candidates, DCO Extreme Physics and Chemistry Community member…

“Nesting Doll” Minerals Offer Clues to Earth’s Mantle Dynamics 10 April 2017 Feature

A team led by DCO member and experimental petrologist Yingwei Fei (Carnegie Institution of…

A New Piece of the Global Methane Puzzle 30 March 2017 Feature

Serpentinization reactions at shallow depths are the subject of intense research interest due to…

Half of Carbon Transported to Mid-Ocean Ridges Remains Trapped Below 29 March 2017 Feature

Researchers thought that this process efficiently moves deep carbon, carried by the magma, and…

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