decarbonation

Another hypothesis involves extensive sea floor rifting and metamorphic decarbonation reactions releasing considerable amounts of carbon dioxide to the atmosphere.

Raw material-related emissions are produced during limestone decarbonation (CaCO) and account for about 60% of total CO emissions.

The mineral is unstable in air, and decomposes by oxidation, dehydration and decarbonation, to ferrihydrite, and ultimately to lepidocrocite or goethite, FeO(OH).

Some recent studies speculate that CO derived by sub-solidus decarbonation reactions during extreme metamorphism has contributed to the deglaciation of the snowball Earth (Santosh and Omori, 2008).

I urge support for compromise amendment 50, and amendment 99 dealing with CO2 emitted from the decarbonation of limestone to produce lime, which makes an important, environmentally friendly contribution to the market.

The abundant CO liberated by subsolidus decarbonation along consuming plate boundaries was probably one of the factors that contributed to the greenhouse effect thereby triggering the de glaciation of snowball Earth.

The reason for this sudden increase in CO is unknown, but it is hypothesised that it was due to an increase in ocean floor being recycled via volcanic arcs and metamorphic decarbonation reactions (Pearson 2010).