Abstract

Although the characterization of depositional conditions of Vendian sedimentary successions in the northwestern, central, northern, northeastern and eastern parts of the East European Platform is available at present, issue of the types of catchment areas and the ratio of crystalline complexes, sedimentary, and metasedimentary sequences therein remains somehow debatable. Location of the clayey rock datapoints of various Vendian lithostratigraphic units in the (CaO + MgO)–SiO₂/10–(Na₂O + K₂O), La/Sc–Th/Co, and F1–F2 diagrams indicates that the main part of fine-grained aluminosiliciclastics was derived mostly from the geochemically mature rock complexes/substrate sources. Such sources can be represented by both sedimentary and felsic–intermediate igneous rocks. Localization of the clayey rock datapoints in the (La/Yb)_N–Eu/Eu* and (La/Yb)_N–Th diagrams suggests that the Vendian shallow-water sedimentary basins were fed mainly from the aluminosiliciclastics transported by major rivers draining large continental areas and/or rivers draining the “mixed/sedimentary” formations, suggesting that the terrain of Riphean sedimentary rocks (currently confined to aulacogens) and Lower Proterozoic metasedimentary formations in the East European Platform could be significantly larger.

中文翻译：

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汇水区的类别-东欧平台北部和东部的Vendian沉积演替的细粒硅铝屑的来源

摘要

尽管目前可以对东欧平台西北，中部，北部，东北和东部地区的文迪亚沉积演替的沉积条件进行表征，但集水区类型的问题以及结晶复合物，沉积和准沉积物的比例问题其中的序列仍然有待商de。（CaO + MgO）–SiO ₂ / 10–（Na ₂ O + K ₂）中各种Vendian岩石地层学单位的黏土岩石数据点的位置O），La / Sc-Th / Co和F1-F2图表明，细粒硅铝质碎屑的主要部分主要来自地球化学成熟的岩石配合物/基质来源。这些来源可以用沉积岩和长英质中期火成岩来表示。在（La / Yb）_N –Eu / Eu *和（La / Yb）_N –Th图中黏土岩石数据点的定位表明，文迪亚浅水沉积盆地主要是由大量排水的主要河流输送的铝硅质碎屑岩喂养的。排泄“混合/沉积”地层的大陆地区和/或河流，这表明东欧平台中的里菲安沉积岩（目前仅限于成因）和下元古代的沉积沉积地带可能会更大。