| 正断层断距纵剖面图及其运动学:概念模型与地质实例 |
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| 引用本文： | 戈红星,Jon K.Anderson.正断层断距纵剖面图及其运动学:概念模型与地质实例[J].高校地质学报,2007,13(1):75-88. |
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| 作者姓名： | 戈红星 Jon K.Anderson |
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| 作者单位： | ConocoPhillips Company, P.O. Box 2197, Houston, TX 77252 |
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| 摘 要： | 断距纵剖面图 （T H图）是指以断层的垂直断距为横轴、以地层或地质年龄为纵轴所绘制的随地层或地质年龄所变化的断距分布图。断距纵剖面图为确定正断层类型、断层形成时间和断层的纵向演化史提供了一个简单迅捷的工具。概念模型表明，断距纵剖面图可以明确无误地区分出简单后沉积型正断层、后沉积拱顶拉张型正断层、同沉积生长型正断层及其复合型正断层。简单后沉积型正断层的断距不随地层年龄的变化而变化， 其断距纵剖面图为一垂直线段。后沉积拱顶拉张型正断层的断距随地层年龄的增大而减小并趋向零值，同沉积生长型正断层的断距随地层年龄的增大而增大，复合型正断层则具其组合型断距纵剖面形态。除简单后沉积型正断层外，断距纵剖面图中的最大断距点代表了该断层的起始形成年代。
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| 关 键 词： | 正断层 断距纵剖面图 运动学 概念模型 构造地质学 |
| 文章编号： | 1006-7493（2007）01-0075-14 |
| 收稿时间： | 2006-05-16 |
| 修稿时间： | 2006-07-22 |
Fault Throw Profile and Kinematics of Normal Fault: Conceptual Models and Geologic Examples |
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| Ge Hong-xing,Jon K.Anderson.Fault Throw Profile and Kinematics of Normal Fault: Conceptual Models and Geologic Examples[J].Geological Journal of China Universities,2007,13(1):75-88. |
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| Authors: | Ge Hong-xing Jon KAnderson |
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| Institution: | ConocoPhillips Company, P.O. Box 2197, Houston, TX 77252 |
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| Abstract: | Fault throw profile (T-H plot) plots vertical fault throw versus geologic or seismic horizon from a cross section. Conceptual models demonstrate that the profiles can be used to determine the styles, timing of initiation, and kinematic histories of normal faults and simply inverted normal growth faults. A throw profile comprising a vertical line segment indicates a simple postdepositional fault. A profile in which throw decreases as horizon age increases indicates a simple postdepositional keystone-stretching fault. A profile in which throw increases as horizon age increases indicates a simple growth fault. Major inflections in a composite profile correspond to the time at which fault style changes. The change of a vertical line segment to a curve with negative slope indicates the change from postdepositional to syndepositional faulting. Stacking of such composite profiles suggests repeated fault burial and rejuvenation. The change of a profile slope from positive to negative indicates change from a postdepositional keystone-stretching fault to a growth fault. The maximum throw in the profile corresponds to the start timing of the fault. Local normal drag increases apparent throw, which creates bumps in the profile. Reverse drag decreases the apparent throw, which creates dents in the profile. |
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| Keywords: | normal fault throw profile kinematics conceptual model structural geology |
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