石油与天然气地质 ›› 2013, Vol. 34 ›› Issue (2): 257-263.doi: 10.11743/ogg20130218

• 盆地构造 • 上一篇    下一篇

塔里木盆地雅克拉断凸走滑作用及其形成机理

罗小龙1,2,3, 汤良杰1,2, 谢大庆4, 邱海峻5, 蒋华山4, 杨勇1,2, 陈绪云4, 张宇航1,2   

  1. 1. 长江大学 地球科学学院,湖北 武汉 430100;
    2. 中国石油大学 盆地与油藏研究中心,北京 102249;
    3. 中国石油大学 油气资源与探测国家重点实验室,北京 102249;
    4. 中国石化 西北分公司,新疆 乌鲁木齐 830011;
    5. 国土资源部 油气资源战略研究中心,北京 100034
  • 收稿日期:2012-10-15 修回日期:2013-03-16 出版日期:2013-04-28 发布日期:2013-05-02
  • 第一作者简介:罗小龙(1974—),男,博士研究生,含油气盆地构造解析。
  • 基金项目:

    国家自然科学基金项目(40972090,41172125);国土资源部全国油气资源战略选区调查与评价国家专项(2010GYXQ02-05);国家科技重大专项(2008ZX05002-003-001HZ);中国石化西北分公司项目(KY2010-S-053,KJ2008-29)。

Strike-slip movement and its genetic mechanism in Yakela faulted salient, the Tarim Basin

Luo Xiaolong1,2,3, Tang Liangjie1,2, Xie Daqing4, Qiu Haijun5, Jiang Huashan4, Yang Yong1,2, Chen Xuyun4, Zhang Yuhang1,2   

  1. 1. School of Geosciences, Yangtze University, Wuhan, Hubei 430100, China;
    2. Basin & Reservoir Research Center, China University of Petroleum, Beijing 102249, China;
    3. State Key Laboratory for Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
    4. SINOPEC Northwestern Oilfield Company, Urumqi, Xinjiang 830011, China;
    5. Strategic Research Center of Oil & Gas Resources, Ministry of Land and Resources, Beijing 100034, China
  • Received:2012-10-15 Revised:2013-03-16 Online:2013-04-28 Published:2013-05-02

PDF (PC)

1056

被引次数

10

摘要：

雅克拉断凸是塔里木盆地含油气丰富且发现油气较早的地区之一。通过解释三维地震资料并结合区域地质资料,发现有多种证据表明该地区发生过走滑作用。平面上,研究区主干断裂附近区域发育众多小级别的断层,主要包括同向剪切断层和张性断层,它们表现为与主位移带呈一定角度的、延伸不长的雁列式断层系,断层系沿亚南断裂呈左阶式雁列排列,沿轮台断裂呈右阶式雁列排列;剖面上发现负花状构造样式,同时海豚效应与丝带效应明显。雅克拉断凸走滑作用始于燕山晚期运动,主要作用时期为喜马拉雅早期运动,止于喜马拉雅晚期运动。燕山中-晚期至喜马拉雅早期,因左旋扭应力与引张力合成的左旋张扭应力导致雅克拉断凸发生走滑作用并形成与之相关的伸展构造。

关键词: 走滑作用, 左旋张扭应力, 雁列式正断层, 雅克拉断凸, 塔里木盆地

Abstract:

The Yakela faulted salient is a key area in the Tarim Basin where some economically important oil and gas have been discovered.The 3D seismic interpretations,in combination with the regional geological data,demonstrate that strike-slip movement occurred in the area.On plane view,many small faults are developed near the major faults,including concordant shear faults and extensional faults.These faults consist of echelon fault systems with a low-angle with the major movement direction and a limited length.The fault system along the Yanan fault is characterized by a left-step pattern,whereas a right-step pattern is shown along the Luntai fault.On sectional view,they consist of a negative flower-like structure with obvious dolphin and ribbon effects.The strike-slip movement initiated in the late Yanshanian,culminated in the early Himalayan,and terminated in the late Himalayan.The left-lateral transtensional stress from the joint action of the left-lateral shear stress and the tensile stress resulted in the strike-slip movement of the Yakelafult-salient and the deve-lopment of the associated extensional structures during the Middle-Late Yanshanian to the Early Himalayan.

Key words: strike-slip, left-lateral transtensional stress, echelon normal fault, Yakela faulted salient, Tarim Basin

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