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Carbonís role in atmosphere formation

planets mars atmosphere carbon

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#1    Waspie_Dwarf


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Posted 13 April 2013 - 10:03 PM

Carbonís role in atmosphere formation

Brown University said:

PROVIDENCE, R.I. [Brown University] ó A new study of how carbon is trapped and released by iron-rich volcanic magma offers clues about the early atmospheric evolution on Mars and other terrestrial bodies.

The composition of a planetís atmosphere has roots deep beneath its surface. When mantle material melts to form magma, it traps subsurface carbon. As magma moves upward toward the surface and pressure decreases, that carbon is released as a gas. On Earth, carbon is trapped in magma as carbonate and degassed as carbon dioxide, a greenhouse gas that helps Earthís atmosphere trap heat from the sun. But how carbon is transferred from underground to the atmosphere in other planets ó and how that might influence greenhouse conditions ó wasnít well understood.

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