论文部分内容阅读
松辽盆地中白垩统松花江生物群中含沟鞭藻、钙质超微化石等海相起源生物的属种及海绿石矿物。海源生物具有低分异度、低丰富度的特点,且与典型陆相生物叶肢介、轮藻共生,而海绿石矿物则广泛见于登娄库组至明水组,其成分具有高铝、低铁、低钾特点。在综合分析国内外近年来陆相沉积盆地中有关沟鞭藻、有孔虫、钙质超微化石等海源生物及海绿石矿物研究成果的基础上,对松辽盆地中白垩统海源生物和海绿石矿物的海相性提出了质疑。结合围岩地球化学特征及岩相古地理资料,认为海源生物和海绿石矿物的出现代表了大型封闭古咸化湖环境,它们的存在不能作为海侵的证据。松辽盆地中白垩统丰富的石油资源来自陆相咸化湖泊和深水湖相沉积。图1表1参23(黄福堂摘
The Middle Cretaceous Songhuajiang biota in the Songliao Basin contain genus and pyrochlore minerals of marine origin organisms such as Daphniphyllum and Calcareous Microfossils. The marine organisms have the characteristics of low degree of differentiation and low abundance, and are symbiotic with the typical terrestrial bio-limbs and charophytes. However, the glauconite minerals are widely found in the Denglouku Formation to the Mingshui Formation and have high aluminum , Low iron, low potassium characteristics. Based on a comprehensive analysis of the researches on marine organisms and glauconite minerals such as dinoflagellates, foraminifers and calcareous microfossils in continental sedimentary basins at home and abroad in recent years, The sea phase of the glauconite mineral questioned. Combined with the geochemical characteristics of the surrounding rock and lithofacies palaeogeographic data, it is considered that the occurrence of marine and glauconite minerals represents a large enclosed ancient salinized lake environment, and their existence can not be used as evidence of transgression. The Cretaceous oil resources in the Songliao Basin come from land-based salinization lakes and deep-water lacustrine deposits. Figure 1 Table 1 Reference 23 (Huang Futang Abstract