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笔者定量研究了太平洋东部海水、孔隙水、沉积物及多金属结核中微生物地球化学作用与多金属结核生成的关系。重点研究了好气性微生物(铁细菌、排硫杆菌、嗜盐菌及锰氧化菌)和厌气性微生物(硫酸盐还原菌、反硝化菌、脱氮硫杆菌)的活动强度和生物转移率与成矿的关系。对比模拟实验研究了微生物和化学作用对成矿元素的转移和聚集,结果表明,微生物改变了系统氧化还原条件,对成矿元素的沉淀强度远远超出了化学作用,并加速了Fe、Mn的富集成矿作用,促使元素富集而间接成矿。 扫描电镜及透射电镜研究首次发现多金属结核各壳层中存在大小不等、形状不一的球状、杆状、椭球状及丝状的古微生物体化石,而且在多金属结核核心部位还发现有纳米级的球状、链状、串珠状等超微菌化石。有些矿化的微生物细胞壁上含
The author quantitatively studied the relationship between microbial geochemistry and production of polymetallic nodules in seawater, pore water, sediments and polymetallic nodules in the eastern Pacific Ocean. The activity intensity and biotransfer rate of aerobic microorganisms (iron bacteria, thiobacillus thiophate, halophilic bacteria and manganese oxidation bacteria) and anaerobic microorganisms (sulfate-reducing bacteria, denitrifying bacteria, Relationship of mineralization. The results of comparison of simulated and experimental experiments on the migration and aggregation of metallogenic elements by microorganisms and chemical reactions showed that the microbial changed the system redox conditions and the precipitation intensity of mineralized elements far exceeded the chemical effect and accelerated the Fe and Mn Enrichment of mineralization, prompting the enrichment of elements and indirect mineralization. Scanning electron microscopy and transmission electron microscopy study found for the first time in the shell of polymetallic nodules of different sizes, shapes of spherical, rod, ellipsoid and filamentous ancient microbial fossils, but also found in the core part of polymetallic nodules Nanoscale spherical, chained, beaded and other microflora fossils. Some mineralized microorganisms contain on the cell wall