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通过对松辽盆地北部晚白垩世青山口组和嫩江组一段、二段中沟鞭藻及疑源类化石形态、丰度、分异度、优势度和组合等古生态特征研究 ,以及对微量元素硼含量、相当硼含量、锶钡比和硼镓比等地球化学特性的分析 ,得出在盆地北部沟鞭藻及疑源类化石的古生态、微量元素的分布规律与盆地内沉积相带的展布三者之间具有较好的相关性 ,说明松辽盆地的沟鞭藻及疑源类的发育和分布是由自生环境决定的。同时 ,通过专门对所谓“海侵”通道上的微体古生物和微量元素特征进行综合分析 ,未发现任何能证明海侵通道存在的证据 ,从而认为此海侵通道并不存在。
Through the study on the paleoecological characteristics such as morphology, abundance, differentiation, dominance and assemblage of the first and second member of the Qingshankou Formation and the Nenjiang Formation in the northern part of the Songliao Basin, Elemental boron content, comparable boron content, strontium-barium ratio and boron-gallon ratio and other geochemical characteristics of the analysis obtained in the northern basin dinoflagellates and suspected source fossils paleoclimate and trace element distribution and sedimentary facies in the basin The results show that the development and distribution of dinoflagellates and suspected sources in the Songliao Basin are determined by the autotrophic environment. At the same time, we did not find any evidence that could prove the existence of transgressive passage by comprehensively analyzing the characteristics of micro-organisms and trace elements on the so-called “transgression” channel, so that this transgressive passage does not exist.