| 江汉盆地西北部断陷带构造变形分析与古应力场演化序列 |
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| 引用本文： | 田蜜,施炜,李建华,渠洪杰.江汉盆地西北部断陷带构造变形分析与古应力场演化序列[J].地质学报,2010,84(2):159-170. |
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| 作者姓名： | 田蜜 施炜 李建华 渠洪杰 |
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| 作者单位： | 中国地质科学院地质力学研究所,北京,100081 |
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| 基金项目： | 深部探测综合集成与数据管理项目(编号SinoProbe-08-01);;地质力学研究所基本科研项目(编号DZLXJK200715)资助的成果 |
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| 摘 要： | 江汉盆地内部发育多个断陷带,其形成与演化对盆地油气聚集至关重要。本文以远安和南漳断陷带为重点,基于详细的野外观察和断裂变形测量,分析了江汉盆地西北部断陷带的构造变形特征,建立了盆地古构造应力场演化序列。结合区域构造分析与变形叠加特征研究,将断陷带白垩纪以来的构造演化历史划分为4个阶段:①晚白垩世—古近纪,受NEE—SWW向引张作用,江汉盆地内部发生断陷;②古近纪末期,断陷盆地遭受近E—W向挤压作用而发生构造反转;③新近纪,先后受NE—SW向引张和NW—SE向引张作用,断陷带再次伸展沉降;④新近纪末期,在NE—SW向构造挤压作用下,断陷带发生右旋走滑活动。江汉盆地晚白垩世以来构造变形序列的建立,为探讨江汉盆地后期构造演化及油气成藏改造提供了构造地质学证据。
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| 关 键 词： | 江汉盆地 断陷带 晚白垩世 构造变形 构造应力场 |
| 收稿时间： | 2009/7/10 0:00:00 |
| 修稿时间： | 2009/8/25 0:00:00 |
Tectonic Deformation Analysis and Paleostress Field Sequence of the Grabens |
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| tianmi,shiwei,lijianhua and quhongjie.Tectonic Deformation Analysis and Paleostress Field Sequence of the Grabens[J].Acta Geologica Sinica,2010,84(2):159-170. |
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| Authors: | tianmi shiwei lijianhua and quhongjie |
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| Institution: | TIAN Mi,SHI Wei,LI Jianhua,QU Hongjie Institute of Geomechanics,CAGS,Beijing,100081 |
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| Abstract: | Several grabens were developed within Jianghan Basin and their formation and evolution are essential to accumulation of oil and gas in the basin. With an emphasis on the Yuan'an Graben and Nanzhang Graben in northwestern Jianghan basin and in combination with detailed field observation and measurement of faulting deformation,this study analyzed in detail the tectonic deformation of the northwestern graben zone of Hanjiang basin and established the stress field sequences. Based on the regional structures and... |
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| Keywords: | Jianghan Basin grabens Late Cretaceous tectonic deformation stress field |
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