Sentences with phrase «organic carbon burial»
These results place general questions on widely acknowledged vertical particle flux models, which apparently do not fully explain the relationship between primary production and organic carbon burial in high productive areas.
https://phys.org/
«The evolutionary innovation and expansion of land biota could permanently increase [chemical] weathering intensity and [clay] formation, establishing a new level of organic carbon burial and oxygen accumulation.»
Marine organic carbon burial is a source of oxygen to the atmosphere, and its rate is proportional to the amount of phosphate in the oceans.
This in turn triggered decreases in marine phosphate concentrations, productivity, organic carbon burial and ultimately oxygen.
Not exact matches
A drop in CO2 due to the burial of organic carbon in the Late Ordovician is the exact opposite of what is happening now as massive amounts of CO2 are being released; yet, understanding how the historic events occurred can help with future models and predictions, Macleod said.
«After examining rocks 450 million years old or older, we believe the drop was caused by a massive burial of organic carbon during the time period,» Quinton said.
To replicate the observed isotopic offset, the model requires that enhanced levels of organic - carbon and pyrite burial continued a few hundred thousand years after peak organic - carbon burial, but that their isotope records responded differently due to dramatically different residence times for dissolved inorganic carbon and sulfate in seawater.
This journey also effectively displaces the area of final burial of organic matter (and thus former atmospheric carbon dioxide) from their place of production.
This occurs when additional nutrients promote atmospheric carbon sequestration via enhanced photosynthesis leading to accelerated rates of organic carbon sedimentation and burial.
I think Peter Ward's theory probably has O2 sinking for other reasons, an imbalance of the burial and weathering of organic carbon over geologic time for example.