摘要
研究了内蒙古巴丹吉林盆地额济纳旗凹陷中生代地层的孢粉化石，建立了三个孢粉化石组合（Ｐｉｎｕｓｐｏｌｅｎｉｔｅｓ－Ｃｙｃａｄｏｐｉｔｅｓ组合、高Ｃｌａｓｏｐｏｌｉｓ组合、Ｃｉｃａｔｒｉｃｏｓｉｓｐｏｒｉｔｅｓ－Ｃｌａｓｏｐｏｌｉｓ组合）。根据孢粉组合特征及共生的介形虫化石提出了三个孢粉组合分属中侏罗世晚期、晚侏罗世、早白垩世早期的观点。此外，还就孢粉组合植物群面貌及纵向变化特征探讨了当时的古气候特征和对石油地质的意义。
The sporopollen from the Mesozoic, Ejinaqi depression, Badanjilin Basin, Inner Mongolia is studied. Three sporopollen assemblages are established: Pinuspollenites-Cycadopites assemblage、high Callopolllis assemblage and Cicatricosisporites-Callopollis assemblage. Based on the characteristics of the sporopollen assemblages and paragenetic ostracoda fossils, it is concluded that the three sporopollen assemblages were preserved respectively in late Middle Jurassic, Late Jurassic and the Earliest Cretaceous. The paleoclimatis characteristics in the period and its significance to oil exploration are also discussed from the appearance and longitudinal evolution of the sporopollen plora.
出处
《长春科技大学学报》
CSCD
1998年第3期247-253,共7页
Journal of Changchun University of Science and Technology
关键词
中生代
孢粉组合
古气候
额济纳旗凹陷
盆地
Mesozoic, sporopollen assemblage, paleoclimate, Ejinaqi depression, Badanjilin Basin, Inner Mongolia
