Carbon organogenic

Friedman G.M. (1988) Methane-derived organogenic carbonates formed by subduction-induced pore-water expulsion along the Oregon/Washington margin Discussion and reply. Geol. Soc. Amer. Bull. 100, 622-623. 

Dolomite cement components were all sourced from outside the sand body, most probably from local or basinal mudrocks. Stable isotope data indicate a mixed organogenic-marine carbonate source, and precipitation at relatively low temperatures (s70°C, if pore fluids were sourced from clay mineral dehydration reactions during deep burial of Carboniferous mudrocks in the Rathlin basin 55°C if they were locally sourced). Thermobaric mass transfer was enhanced by tectonic pulsing and dolomite precipitation was driven by CO2 degassing. 

The finely banded argillaceous sediments are illitic or kaolinitic with a constant content of about 10% mixed-layer minerals and <5% chlorite. Carbonates are generally represented by micro- to macro-crystalline dolomites and organogenic limestones. The thickness of those shallow-marine Upper Carboniferous sediments is 25-90 m. 

The Lower Permian deposits are represented by intercalation of gypsified dolomites and gypsums with spare interlayers of sand rock and siltstones (thickness from 80 to 115 m). Above it, with the erosion, Middle Permian sedimentary rocks are deposited. Carbonate rock here is represented by marls, lime dolostones and dolomitic limestones, mostly organogenous, but sometimes silicified. Carbonate members are alternate with terrigenous members (sand rocks, siltstones, clay) and make, as a whole, till 75% from the volume of Middle Permian (Shevelev 2012). 

In food, drinking water and drinks there are numerous inorganic anions. Some anions are forms of organogenic elements (such as carbonates and hydrogen carbonates), of essential elements (chlorides, phosphates, sulfates, iodides, fluorides, borates) and of non-essential elements (bromides). These and many other anions are mostly beneficial or harmless, and toxic effects exhibit only if present in food, drinking water and drinks in large quantities. Toxic effects can also result from an excessive accidental intake of these anions (fluorides, iodides and bromides). 

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