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首页> 外文期刊>Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen >The Ryazanian (basal Lower Cretaceous) standard zonation: state of knowledge and potential for correlation with the Berriasian primary standard
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The Ryazanian (basal Lower Cretaceous) standard zonation: state of knowledge and potential for correlation with the Berriasian primary standard

机译：雷达坦（基础下白垩纪）标准区划：知识状态和与Berriasian主要标准相关的潜力

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摘要

The chronostratigraphic zonal succession of the ammonoid-based biostratigraphic subdivision of the Ryazanian stage in its type region (the Russian Platform) is discussed. It is proposed to recognize (in ascending order) the Kochi, Rjasanensis, Spasskensis, and Tzikwinianus zones, as the Ryazanian standard. The chronostratigraphic ranges of the genus Riasanites and other ammonites of Tethyan origin in the Rjasanensis and Spasskensis zones apparently correspond to the interval from the Occitanica Zone to the Boissieri Zone (Paramimounum Subzone) of the Berriasian primary standard. The correlation of the basal Lower Cretaceous of the Russian Platform with synchronous beds of Poland, Mangyshlak, Northern Caucasus, Crimea, and direct correlation with the Occitanica Chronozone has promising prospects, making the base of this zone a preferred choice for the Jurassic-Cretaceous boundary. The Central Russian ecotone, therefore, has considerable potential for the Boreal-Tethyan correlation.
机译：讨论了雷达坦阶段在其类型区域（俄罗斯平台）中的基于氨基铵生物数据分细胞的计时级别的地图。 建议认识到（按升序）Kochi，Rjasanensis，Spasskensis和Tzikwinianus区作为雷达坦标准。 resanensis和spasskensis区中的riaisanites属和Tethyan起源的其他氨基族的计时器范围显然对应于orcitanica区的间隔到Berriasian主要标准的Boissieri区（Paramimounum子Zone）。 俄罗斯平台的基础下白垩纪与波兰同步床的相关性，Mangyshlak，Northern高加索，克里尼亚州的直接相关性具有很有希望的前景，使该区域的基础是侏罗纪 - 白垩纪边界的首选 。 因此，中央俄罗斯的生态龙对Boreal-Tethyan相关性具有相当大的潜力。

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