摘要:[目的]研究鄂尔多斯盆地南部油砂的时代归属及古气候特征。[方法]基于油砂上下层段的孢粉化石的研究,追溯了孢粉组合的时代,并通过古植被分布特征恢复古气候。[结果]本组合中以裸子植物花粉占绝对优势,其中以古松柏类Paleoconiferae和松科Protopinus、Pseudopicea、Piceites、Pseudopinus为主,蕨类植物孢子较少。同时我们识别出多个具有时代特征的孢粉类型。[结论]推测油砂富集层位可能为下侏罗统延安组。依据孢粉谱和孢粉类群的古生态特征,认为在下侏罗统延安组沉积时期,气候温暖潮湿,大量存在常绿针叶林植被及少量草本和灌木,整体属于温带-亚热带气候。
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鄂尔多斯文化 Earthquake Engineering and Engineering Vibration China Ocean Engineering Water Science and Engineering Journal of Bionic Engineering Chinese Journal of Mechanical Engineering Chinese Journal of Chemical Engineering Journal of Systems Engineering and Electronics Journal of Systems Science and Systems Engineering Frontiers of Information Technology Electronic Engineering Transactions of Nonferrous Metals Society of China