Bacterial Diversity in Calcium Carbonate Paleo Accretions (Tosca) in the Southern Pampas, Argentina
نویسندگان
چکیده
Paleosoil accretions of carbonates in the Tandilia system (Southern Pampas, Argentina) dated to lower/middle Pleistocene age are locally referred as tosca. The characterization this indurated layer were analyzed via a biophysicochemical approach, including, physicochemical analysis soils, mineral x-ray diffraction tosca, and microbial diversity modern soils tosca layers. minerals found within calcite, albite, muscovite, quartz, orthoclase dolomite order most least abundant. metataxonomics was described for first time. abundant microorganisms g_Geobacter, g_Pseudonocardia p_Gemmatimonadetes2 redundancy parameters relative abundances revealed positive correlations between Nitrospirae calcium ions, while associated Gemmatimonadetes Firmicutes with calcite presence. Magnetospirillum, Geobacter Bacillus present soil above, indicating possible prenucleation sites dolomite. Core microorganism abundance >80% throughout horizons including hence either entrapment carbonate precipitation or leaching occurred layer.
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ژورنال
عنوان ژورنال: Geomicrobiology Journal
سال: 2021
ISSN: ['0149-0451', '1521-0529']
DOI: https://doi.org/10.1080/01490451.2021.1968980