Sulfate is the most abundant electron acceptor in the ocean today. A large fraction of the buried organic matter in marine sediments is re-mineralized through microbial sulfate reduction (MSR) during which the sulfate is reduced to H2S (Jørgensen 1982; Kasten and Jørgensen 2000). The H2S can be re-oxidized to sulfate or buried as pyrite in sediments (Jørgensen 1977). The burial of pyrite ultimately contributes to the rising of atmosphere O2 concentration (Berner and Canfield 1989). Sulfate, meanwhile, can be buried as gypsum and anhydrite in evaporites (Claypool...

中文翻译：

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硫酸盐中的小三重氧同位素变化：机理与应用

硫酸盐是当今海洋中最丰富的电子受体。通过微生物硫酸盐还原（MSR）将海洋沉积物中大部分的埋藏有机物重新矿化，在此期间，硫酸盐被还原为H2S（Jørgensen1982； Kasten andJørgensen2000）。H2S可以再氧化为硫酸盐或以黄铁矿形式埋在沉积物中（Jørgensen1977）。埋藏黄铁矿最终会导致大气中氧气浓度的升高（Berner and Canfield 1989）。同时，硫酸盐可以作为石膏和硬石膏埋在蒸发物中（Claypool ...