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Oligocene
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渐新世（地质的）
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详细解释：
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以下为句子列表：
英文: On the basis of all kinds of stratigraphic and petrologic data of outcrop and well sections, the maps of single factors and sedimentary facies of the Paleocene-Eocene, Oligocene and Miocene were compiled with the single factor analysis and multifactor com
中文: 摘要根据柴达木盆地北缘露头剖面、钻井剖面的地层学和岩石学研究所取得的各种定量及定性资料，采用冯增昭教授倡导的单因素分析多因素综合作图法，编制了柴达木盆地北缘结绿素－红山地区古新统－始新统、渐新统和中新统的各种单因素图和沉积相图。
更详细...
英文: The study results can be summerized as following aspects: (1) The basic settling curve of this basin was broken-line shape of seven sections in which Upper Jurassic, Lower Cretaceous, Eocene, Oligocene and Neogene corresponded with the decline ones repres
中文: 研究表明：(1)北黄海盆地的基本沉降曲线型式为7段折线状，其中晚侏罗世、早白垩世、始新世、渐新世、新近纪为曲线下降段，代表盆地5幕较明显的沉降；晚白垩世－古新世以及中新世早期为曲线上升段，反映盆地的抬升剥蚀。
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英文: The environment fell into the middle-outer neritic province from the end stage of the late Oligocene to the early period of the Pleistocene in this sea area. The five bioproductivity explosion events(BEE-BEE)had happened during this period.
中文: 本区从晚渐新世末期至更新世早期的环境为中-外浅海环境,在此期间,共有五次生物生产力爆炸事件(BEE—BEE)。
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英文: CALCAREOUS NANNOFOSSILS FROM THE OLIGOCENE SHAHEJIE-Ⅰ MEMBER IN THE BOHAI BASIN AND THEIR SEDIMENTARY ENVIRONMENT
中文: 渤海湾盆地沙河街组一段颗石藻类化石及其沉积环境
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英文: Palynological Assemblage of Eocene-Oligocene Pollen and Their Biostratigraphic Correlation in Dahonggou,Daqaidam Area,Qaidam Basin
中文: 柴达木盆地大柴旦地区大红沟古近纪孢粉组合序列与地层对比
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