内蒙古东胜中侏罗世孢粉植物群与沉积环境  

Middle Jurassic Palynoflora and Its Environmental Significance of Dongsheng,Inner Mongolia

作　　者：江德昕[1] 王永栋[2] 

机构地区：[1]中国科学院兰州地质研究所,兰州730000 [2]中国科学院南京地质古生物研究所,南京210008

出　　处：《沉积学报》2002年第1期47-54,共8页Acta Sedimentologica Sinica

基　　金：国家自然科学基金资助项目 (批准号 :3990 0 0 0 7)

摘　　要：基于内蒙古东胜地区中侏罗统延安组发现的孢子花粉 34属 6 3种的研究 ,建立了研究区中侏罗世早期孢粉植物群。根据孢粉植物的特征探讨了该区早中侏罗世古生态、古气候和沉积环境及其对煤炭、石油和天然气形成的关系。研究结果表明 ,暖湿 (或湿热 )气候条件下的湖泊沼泽沉积对煤和油气的形成有巨大潜力。Based on the investigations of 63 species of fossil spores and pollen referred to 34 genera found from the Middle Jurassic Yanan Formation in Dongsheng region of Inner Mongolia, the early Middle Jurassic palynoflora in the region was established in this paper. According to the character of the palynoflora, the early Middle Jurassic paleoecological characteristics, paleoclimatic conditions and sedimentary environment in the study area are discussed. An approach to the original environment of coal, oil and natural gas is also made. The results of this study indicate that the warm and humid climate might be favorable for the origin of coal, oil and natural gas, and the lacustrine-marsh (or swamp) deposits under warm or hot and humid or wet climatic conditions might possess tremendous potentials for the origin of coal, oil and natural gas.

关 键 词：孢粉植物群 中侏罗世 古气候 沉积环境 内蒙古 煤 油气 

分 类 号：Q913.84[天文地球—古生物学与地层学] P534.52[生物学—古生物学]