| 古气候恢复及其对沉积的控制作用——以四川盆地上三叠统须家河组为例 |
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| 引用本文： | 徐兆辉,胡素云,汪泽成,徐安娜,江青春.古气候恢复及其对沉积的控制作用——以四川盆地上三叠统须家河组为例[J].沉积学报,2011,29(2):235-244. |
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| 作者姓名： | 徐兆辉 胡素云 汪泽成 徐安娜 江青春 |
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| 作者单位： | 中国石油勘探开发研究院 北京 100083 |
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| 基金项目： | 国家基础研究发展规划项目(编号:2007CB209502); 中国石油科研项目(编号:2008A-0607)联合资助 |
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| 摘 要： | 四川盆地上三叠统须家河组是盆地的主力产层,该组发育的6段地层表现为砂-泥间互的"三明治"式沉积结构.为了探讨古气候对这种沉积结构的控制作用,文章首次利用孢粉学方法、元素比值法和自然伽马曲线法分别恢复了四川盆地晚三叠世须家河期各段地层沉积时期的古气候.孢粉植被法识别出蕨类和裸子类孢粉化石共计78属,呈现"拟网叶蕨孢属-凹...
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| 关 键 词： | 须家河期 古气候 孢粉 元素 自然伽马曲线 "三明治"结构 |
| 收稿时间： | 1900-01-01 |
Restoration of Paleoclimate and Its Geological Significance: As an example from Upper Triassic Xujiahe Formation in Sichuan Basin |
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| XU Zhao-hui,HU Su-yun,WANG Ze-cheng,XU An-na,JIANG Qing-chun.Restoration of Paleoclimate and Its Geological Significance: As an example from Upper Triassic Xujiahe Formation in Sichuan Basin[J].Acta Sedimentologica Sinica,2011,29(2):235-244. |
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| Authors: | XU Zhao-hui HU Su-yun WANG Ze-cheng XU An-na JIANG Qing-chun |
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| Institution: | Research Institute of Petroleum Exploration and Development, PetroChina Beijing 100083 |
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| Abstract: | Upper Triassic Xujiahe Formation in Sichuan Basin is the principal producing formation.Six members of Xujiahe Formation form sandwich-like sedimentation structure with interbeded sandstone and mudstone.In order to discuss the contribution of paleoclimate on this kind of sedimentation structure,three commonly-used methods of restoring paleoclimate,namely sporopollen,elements and GR-ray logging were used to restore the paleoclimate of the time when each member of Xujiahe Formation was deposited.78 genera of s... |
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| Keywords: | Xujiahe stage paleoclimate sporopollen elements GR curve sandwich-like structure |
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