Sulfate reduction related to the early diagenetic degradation of organic matter and "black spot" formation in tidal sandflats of the German Wadden Sea (southern North Sea):: stable isotope (13C, 34S,18O) and other geochemical results
Sulfate reduction related to the early diagenetic degradation of organic matter and "black spot" formation in tidal sandflats of the German Wadden Sea (southern North Sea):: stable isotope (13C, 34S,18O) and other geochemical results
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DOI：
10.1016/s0146-6380(98)00124-7
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发表时间：
1998-01-01
影响因子：
3
通讯作者：
Rullkötter, J
中科院分区：
文献类型：
--
作者：
Böttcher, ME;Oelschläger, B;Rullkötter, J
通过稳定同位素地球化学调查（S-34/S-32, C-13/C-12, O-18/O-16）对北海南部Spiekeroog岛背障潮区缺氧表层沉积物（“黑点”）的发育进行了研究。微生物硫酸盐还原与厌氧条件下主要海洋有机物的降解有关，导致沙质沉积物间隙水中的硫化氢积累（高达8 mM）。有机质的碳同位素组成反映了不稳定（海洋）有机质的下核优先降解，而溶解硫物种的硫和氧同位素变化提供了微生物介导的硫、碳和氧循环之间复杂相互作用的信息。1998爱思唯尔科学有限公司版权所有。
A stable isotope geochemical investigation (S-34/S-32, C-13/C-12, O-18/O-16) has been carried out to study the development of anoxic surface sediments ("black spots") in the backbarrier tidal area of Spiekeroog island (southern North Sea. Microbial sulfate reduction related to the degradation of mainly marine organic matter under anaerobic conditions led to the accumulation of hydrogen bisulfide (up to 8 mM) in the interstitial waters of the sandy sediments. While the carbon isotopic composition of organic matter reflected the downcore preferential degradation of labile (marine) organic matter, sulfur and oxygen isotope variations in the dissolved sulfur species provided information about the microbiologically mediated complex interactions bt tween the sulfur, carbon and oxygen cycles. (C) 1998 Elsevier Science Ltd. All rights reserved.