Abstract

Eocene silicofossils (diatoms and silicoflagellates), dinoflagellate cysts, and continental palynomorphs of two boreholes in the Cis-Donetsk and Pavlovsk–Kantemirovka structural-facies zones of the Donets Syncline were studied. The Veshenskaya Formation, characterized by the dinocyst assemblage of the Stenodinium meckelfeldense Zone, is assigned to the early Ypresian. The Tishki and Kasyanоvka formations, with assemblage of the Bipalla oamaruensis diatom zone and first appearance of silicoflagellate Corbisema hexacantha, as well as a dinocyst assemblage with Enneadocysta pectiniformis, are dated as the late Lutetian–early Priabonian. The microfossil assemblages are typical of shallow-water marginal parts of the epicontinental paleobasin.

中文翻译：

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南俄罗斯板块下古近系硅质-陆源沉积物的硅化石和恐龙囊：它们对沉积层序测年的意义

摘要

研究了顿涅茨向斜的 Cis-Donetsk 和 Pavlovsk-Kantemirovka 构造相带中两个钻孔的始新世硅化石（硅藻和硅鞭毛藻）、甲藻囊肿和大陆孢粉体。Veshenskaya 组的特征是 Stenodinium meckelfeldense 带的双胞囊组合，属于伊普勒斯早期。Tishki 和 Kasyanоvka 地层，与 Bipalla oamaruensis 硅藻带的组合和硅鞭毛藻 Corbisema hexacantha 的首次出现，以及与Enneadocysta pectiniformis的双囊组合，被确定为卢特阶晚期 -普里阿波阶早期。微化石组合是表陆古盆地浅水边缘部分的典型特征。