Abstract

This article reports the first results of studies on microbially mediated organomineralization in carbonate ooids from the Paleozoic sections of the Timan–Northern Ural region, which were formed in different environments and had different original mineral composition (calcite, Mg-calcite, and dolomite). Using a scanning electron microscope, mineralized microbial biofilms preserved in various forms and the modified morphology of primary grains under the effect of organic acids were identified. The interrelation between microbes and organomineralization has been established, which was observed in the form of conserved nuclei of the amorphous phase of calcium carbonate on the surfaces of mineralized biofilms, including EPS relics in the composition of ooid crusts. Carbon and oxygen isotope data showed the difference in Paleozoic ooid formation from saline lagoons to open shallow sea. The Raman spectra revealed the state of structure order of carbonaceous materials (CM) ranging from amorphous to weakly ordered carbon in ooids, which enables the data on the isotope composition of ooid carbonates to be considered corresponding to their primary composition and the environmental conditions under which they were formed.

中文翻译：

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微生物介导的古生代碳酸盐有机体的有机金属化。

摘要

本文报道了在Timan-North Ural地区古生代剖面中碳酸盐类化合物中微生物介导的有机矿化的第一项研究结果，这些碳酸盐在不同的环境中形成并具有不同的原始矿物组成（方解石，Mg方解石和白云石）。使用扫描电子显微镜，鉴定了以各种形式保存的矿化的微生物生物膜，以及在有机酸的作用下原始谷物的形态发生了改变。已经建立了微生物与有机矿化之间的相互关系，这种关系以矿化生物膜表面上碳酸钙无定形相的守恒核的形式观察到，包括卵形结壳成分中的EPS残留物。碳和氧同位素数据表明，从盐湖到开阔的浅海，古生界的卵石形成存在差异。拉曼光谱揭示了碳酸盐材料（CM）的结构有序状态，从无定形到弱有序碳都存在于类固醇中，这使得有关类固醇碳酸盐的同位素组成的数据可以认为与它们的主要成分和环境条件相对应。他们成立了。