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New Rock Type Discovered Beneath The Ocean – Forbes

A new type of basalt created during large and exceptionally hot volcanic eruptions has been discovered beneath the Pacific Ocean.

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Microscopic cross-section of the new basalt type.
EXP 351 Science
An international team of researchers unearthed the previously unknown form of basalt after drilling through the Pacific ocean floor.
Basalt is a fine-grained volcanic rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava). Mafic magma – as lava is called before erupting on the surface – forms by partial melting of olivine (a magnesium-iron-silicate) rocks found in Earth’s upper mantle. As…

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