| 豫西栾川潭头盆地白垩纪－古近纪古气候研究 |
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| 引用本文： | 毛志芳,周洪瑞,李淑娟,卢远征.豫西栾川潭头盆地白垩纪－古近纪古气候研究[J].沉积与特提斯地质,2013,33(1):18-24. |
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| 作者姓名： | 毛志芳 周洪瑞 李淑娟 卢远征 |
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| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京,100083
2. 中国石油勘探开发研究院,北京,100083 |
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| 摘 要： | 豫西栾川潭头盆地是一个晚白垩世—古近纪陆相沉积盆地,沉积了一套以红色碎屑岩为主的晚白垩世-古新世地层。本文以孢粉分析为主,综合区内古生物学、岩石学、沉积学等古气候标志,认为研究区高峪沟组下段沉积时期属半干旱的热带气候;上段下部沉积时期为半干旱半湿润的亚热带-热带气候;上段上部沉积时期为半湿润的亚热带气候。大章组底部沉积时期属半湿润的暖温带气候。根据区内古气候特征及化石资料分析认为,研究区K/E界线位于高峪沟组上段的上部与下部之间。
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| 关 键 词： | 古气候 白垩纪-古近纪 潭头盆地 孢粉分析 |
| 收稿时间： | 2012/2/29 0:00:00 |
| 修稿时间： | 2012/3/9 0:00:00 |
Palaeoclimates in the Tantou Basin, Luanchuan, western Henan during the Cretaceous-Palaeogene |
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| MAO Zhi-fang,ZHOU Hong-rui,LI Shu-juan,LU Yuan-zheng.Palaeoclimates in the Tantou Basin, Luanchuan, western Henan during the Cretaceous-Palaeogene[J].Sedimentary Geology and Tethyan Geology,2013,33(1):18-24. |
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| Authors: | MAO Zhi-fang ZHOU Hong-rui LI Shu-juan LU Yuan-zheng |
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| Institution: | 1.School of the Geosciences and Resources,China University of Geosciences,Beijing 100083,China;2.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China) |
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| Abstract: | The Tantou Basin in western Henan is a Late Cretaceous-Palaeogene continental sedimentary basin in which the red clastic rocks are accentuated. The combination of palynological, palaeontological, petrological, sedimentological approaches in the present paper has disclosed that there occurred the semiarid tropical climates during the deposition of the lower member of the Gaoyugou Formation; semiarid to subhumid subtropical to tropical climates during the deposition of the lower part of the upper member of the Gaoyugou Formation, and subhumid subtropical climates during the deposition of the upper part of the upper member of the Gaoyugou Formation. Till the deposition of the basal part of the Dazhang Formation, the subhumid warm temperate climates prevailed over the study area. It is concluded that the Cretaceous-Palaeogene boundary should be delimited in the strata between the upper part and lower part of the upper member of the Gaoyugou Formation. |
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| Keywords: | palaeoclimates Cretaceous-Palaeogene Tantou Basin sporopollen analysis |
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