| 泌阳断陷陡坡带陆相层序发育的可容空间图解探讨 |
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| 引用本文： | 胡受权.泌阳断陷陡坡带陆相层序发育的可容空间图解探讨[J].高校地质学报,1998,4(1):85-94. |
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| 作者姓名： | 胡受权 |
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| 作者单位： | 西南石油学院 |
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| 摘 要： | 泌阳断陷湖盆基底构造沉降为非线性函数或间断函数，且呈“反铰链式”沉降。在湖平面变化和构造沉降共同作用下，泌阳断陷湖盆陡坡带的可容空间变化仅有三种可能性：ａ．南缘及北缘减小，中央带增加；ｂ．南缘不变，中央带及北缘增加；ｃ．南缘、中央带及北缘均增加。针对这三种情况，分别在不同的物源供给速率条件下，分析了断陷湖盆陡坡带不同构造部位的剩余可容空间变化规律及其相应沉积特征。文中以泌阳断陷双河－赵凹地区为例，探讨了参照井选择的可容空间机理，对下第三系核三一段的陆相层序进行了划分，建立了其等时层序框架模式。
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| 关 键 词： | 构造沉陷 可容空间图解 断层 陆相层序 泌阳 |
| 收稿时间： | 1998-03-20 |
| 修稿时间： | 1998-03-20 |
ON ACCOMMODATION DIAGRAM OF DEVELOPING MECHANICS OF TERRIGENOUS SEQUENCE IN THE STEEP SLOPE ZONE OF BIYANG FAULT DEPRESSION |
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| Hu,Shouquan.ON ACCOMMODATION DIAGRAM OF DEVELOPING MECHANICS OF TERRIGENOUS SEQUENCE IN THE STEEP SLOPE ZONE OF BIYANG FAULT DEPRESSION[J].Geological Journal of China Universities,1998,4(1):85-94. |
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| Authors: | Hu Shouquan |
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| Institution: | Petroleum Institute, Southwest |
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| Abstract: | In Biyang fault depressed lacustrine basin, the tectonic settlement of basement presented a nonlinear or disconnected function and an anti hinge type. Due to the joint effect of lacustrine level change and basement structural subsidence the accommodation change in steep slope zone of Biyang fault depressed lacustrine basin only has three possibilities:1.decreasing at southern and northern rims but increasing in central zone;2.invariant at southern rim but increasing in central and northern rim zones;3. increasing at both southern and northern rims and central zone. In the light of the three cases, the sedimentation response characteristics to the accommodation variation at different structural positions of the steep slope zone in fault depressed lacustrine basin is analyzed respectively at different recharge rate of sediment source. Taking Shuanghe Zhaoao area in Biyang fault depression as an example in this paper, accommodation mechanism to select reference well is discussed. Using well B207 as a reference well, the terrigenous sequences of the upper member of Eh 3 are divided, and the isochronous stratigraphic framework model is set up. |
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| Keywords: | tectonic settlement lacustrine level change accommodation diagram procedure response mechanism terrigenous sequence Biyang fault depression |
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