海拉尔盆地早白垩世孢粉古气候特征  

The early cretaceous palynologic palaeoclimate of Hailaer Basin

作　　者：王丽岩[1] 孙跃武[2] 乔秀云[3] 薛云飞[3] 金玉东[3] 

机构地区：[1]吉林大学地球科学学院,吉林长春130061 [2]吉林大学古生物学与地层学研究中心,吉林长春130026 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2008年第5期38-42,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目(30670138)资助

摘　　要：孢粉数据指示:早白垩世铜钵庙组下部沉积时期植被类型是针叶林、草丛,属于湿润的暖温带气候;铜钵庙组上部沉积时期植被类型是草原、灌木丛,属于湿润的南亚热带气候。早白垩世南屯组沉积时期植被类型是针叶林,属于半湿润的暖温带气候。早白垩世大磨拐河组一段沉积时期植被类型是针叶混交林,属于湿润的暖温带气候;大磨拐河组二段沉积时期植被类型是草原、疏林,属于湿润的北亚热带气候。早白垩世伊敏组一段沉积时期植被类型是针叶混交林、灌草丛,属于湿润的南亚热带气候,伊敏组二段沉积时期植被类型是针叶林、灌草丛,属于湿润的南亚热带气候,伊敏组三段中下部沉积时期植被类型是针叶林、灌木丛,属湿润的热带气候,伊敏组三段上部沉积时期植被类型是针叶混交林、灌木丛,属于湿润的热带气候。上述各组段的孢粉古植被和古气候特征可作为海拉尔盆地地层对比的新标志。Palynologic data indicates that the early Cretaceous vegetation pattern during the sedimentation period of lower Tongbomiao Formation contains coniferous forest and tussock, which belongs to humid warm temperate zone climate. The vegetation pattern （luring the sedimatation period of upper Tongbomiao Formation contains prairie and shrubbery, which belongs to humid southern sub-tropical climate. The vegetation pattern during the sedimentation period of early Cretaceous Nantun Formation ineludes coniferous forest, which belongs to sub-humid warm temperate climate. The vegetation pattern during the sedimentation period of early Cretaceous Damoguaihe Formation includes coniferous mixed forest, which belongs to humid warm temperate zone climate. The vegetation pattern during the sedimentation period of segment Ⅱ of Damoguaihe Formation includes prairie and veld, which belongs to humid northern sub-tropical climate. The vegetation pattern during the sedimentation period of early Cretaceous Yimin Formation includes coniferous mixed forest and shrub, which belongs to humid southern sub-tropical climate. The vegetation pattern during the sedimentation period of segment Ⅱ of Yimin Formation includes coniferous forest and shrub, which belongs to humid southern sub-tropical climate. The vegetation pattern during the sedimentation period of the middle and lower part of segment Ⅲ of Yimin Formation includes coniferous forest and shrub, which belongs to humid tropical climate. The vegetation pattern during the sedimentation period of the upper part of segment Ⅲ of Yimin Formation includes coniferous mixed forest and shrub, which belongs to humid tropical climate. The above vegetation and palaeoelimite features could be taken as new marker for stratigraphy correlation in Hailaer Basin.

关 键 词：海拉尔盆地 白垩纪 孢粉化石 古植被 古气候 

分 类 号：TE111.3[石油与天然气工程—油气勘探]