Middle Jurassic Palynoflora and Its Environmental Significance of Dongsheng,Inner Mongolia
-
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。Abstract: 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
-
Key words:
- palynoflora /
- middle Jurassic /
- paleoclimate /
- sedimentary environment /
- Inner Mongolia
-
[1] 内蒙古自治区地层表编写组.华北地区区域地层表(内蒙古分册)[M].北京:地质出版社,1978.1～338 [2] 中国地质科学院地质研究所.陕甘宁盆地中生代地层古生物[M].北京:地质出版社,1980.1～212 [3] Couper R A.British Mesozoic microspores and pollen grains[J].Palaeontographica B,1958,103:75～179 [4] Potonié R.Synopsis der Sporae in situ[J].Beih.Geol.Jb.,1962,52:1～204 [5] Balme E.Fossil in situ spores and pollen grains:an annotated catalogue[J].Rev.Palaeobot.Palynol.,1995,87:81～323 [6] 王永栋,梅盛吴.鄂西早侏罗世一种马通科植物生殖器官的微细构造及原位孢子特征[J].科学通报,1999,44:412～415 [7] Tralau H.Some Middle Jurassic microspores of southern Sweden[J].Geol.Fren.Frhandlg,1967,89:1～111 [8] Tralau H.Botanical investigations into the fossil flora of Eriksdalin Fyledalen,Scania[J].Bull.Geol.Surv.Swed.,1968,633:1～132 [9] Pocock S A J.Palynology of the Jurassic sediments of western Canada[J].Palaeontographica B,1970,130:12～136 [10] 杜宝安,李秀荣,段文海.甘肃崇信延安组、直罗组孢粉组合[J].古生物学报,1982,21:597～606 [11] 孙峰.新疆吐鲁番七泉湖煤田早、中侏罗世孢粉组合[J].植物学报,1989,31:638～646 [12] 黄嫔.新疆吐哈盆地大南湖煤田早、中侏罗世孢粉组合及其地层意义[J].古生物学报,1995,34:171～193 [13] 王永栋,江德昕,杨惠秋,孙峰.新疆吐鲁番-鄯善地区中侏罗世孢粉组合[J].植物学报,1998,40:969～976 [14] 中国科学院北京植物研究所.中国蕨类植物孢子形态[M].北京:科学出版社,1976.1～451 [15] 王伏雄,钱南芬,张玉龙,杨惠秋.中国植物花粉形态(第二版)[M].北京:科学出版社,1995.1～461 [16] Jiang De-Xin.Spores and pollen in oils as indicators of lacustrine source rocks[J].Geol.Soci.Spec.Pub.,1988,40:159～169 -
点击查看大图
计量
- 文章访问数: 510
- HTML全文浏览量: 2
- PDF下载量: 346
- 被引次数: 0
下载:
