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主要通过南海北部冷泉碳酸盐岩的扫描电子显微镜观察,发现该区结核状碳酸盐岩具有微孔结构,这些微孔可能是甲烷渗漏的通道,并且结核状碳酸盐岩矿物堆积较为紧密;碳酸盐矿物的微形态呈近菱形、菱形、球状、丝状、短柱状、卵状等形态或集合体,其中球状碳酸盐具有微生物结构,由蠕虫状或丝状矿物组成,其他几种微形貌的碳酸盐矿物由纳米级的微晶颗粒组成。碳酸盐集合体微形貌和微晶颗粒在形态和大小上与甲烷氧化古细菌和硫酸盐还原菌差别较大,由此推测在其沉淀过程中这两种细菌可能只是提供了物质基础,而其沉淀作用则与纳米细菌密切相关。在南海北部冷泉碳酸盐岩中还发现了结晶程度不同的碳酸盐矿物连续生长的现象,以及一些未知的蘑菇状和管状矿物。
The results of scanning electron microscopy (SEM) analysis of cold spring carbonate rocks in the northern South China Sea show that the nodular carbonate rocks in this area have micropores, which may be the channels for methane seepage and the accumulation of nodular carbonate minerals is relatively Closely; the morphology of carbonate minerals is rhombohedral, rhombic, spherical, filamentous, short columnar, ovate and other forms or aggregates, of which the spherical carbonate has a microbial structure consisting of wormlike or filamentous minerals and other Several micromorphic carbonate minerals consist of nanoscale crystallite grains. The morphology and size of the carbonate aggregates micro-morphology and microcrystalline particles are quite different from the archaeal oxidized archaea and sulfate-reducing bacteria, suggesting that these two bacteria may only provide the material basis in the precipitation process, The sedimentation is closely related with the nano-bacteria. In the cold spring carbonate rocks in the northern South China Sea, the phenomenon of continuous growth of carbonate minerals with different degrees of crystallinity, as well as some unknown mushrooms and tubular minerals, has also been found.