塔里木盆地北缘沙雅隆起两阶段走滑变形的证据

何光玉; 顾忆; 赵永强; 姚泽伟; 郑晓丽; 肖思东; 黄继文; 贾存善; 周雨双

doi:10.11781/sysydz202002172

塔里木盆地北缘沙雅隆起两阶段走滑变形的证据

doi: 10.11781/sysydz202002172

何光玉^1,,
顾忆²,
赵永强²,
姚泽伟^{1, 3},
郑晓丽⁴,
肖思东^{1, 5},
黄继文²,
贾存善²,
周雨双²

1.
浙江大学地球科学学院, 杭州 310027
2.
中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126
3.
浙江大学海洋学院, 浙江舟山 316021
4.
东方地球物理公司, 新疆库尔勒 841000
5.
浙江国高能源科技有限公司, 杭州 310023

基金项目:

国家“十三五”科技攻关项目 2017ZX05005002-002

详细信息

作者简介:
何光玉(1968-), 男, 博士, 副教授, 从事构造地质、石油地质与海洋地质教学和研究。E-mail: hegy@zju.edu.cn

中图分类号: TE121.1
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出版历程
- 收稿日期: 2019-12-07
- 修回日期: 2020-02-07
- 刊出日期: 2020-03-28

Evidence of two-stage strike-slip structural deformation of Shaya Uplift, northern Tarim Basin

1.
School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China
2.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China
3.
Ocean College, Zhejiang University, Zhoushan, Zhejiang 316021, China
4.
BGP Inc, CNPC, Korla, Xinjiang 841000, China
5.
Zhejiang GOGA Energy Technology Company, Hangzhou, Zhejiang 310023, China

摘要

摘要: 沙雅隆起（塔北隆起）是塔里木盆地北缘极为重要的近东西向构造带。前人研究认为，沙雅隆起以逆冲变形为主，但是，这一认识既与地震剖面上的花状构造样式相矛盾，又与平面图上断层呈扫帚状和拖尾状分布的特征相矛盾。该文基于高分辨率的三维地震剖面，提出塔里木盆地北缘沙雅隆起经历了2个阶段的走滑构造变形：第一阶段为加里东晚期—印支期的压扭构造变形，形成了深部构造层中的大型正花状构造，同时地层被大幅抬升并遭受剥蚀；第二阶段为喜马拉雅期的负反转—张扭构造变形，形成了浅部构造层中的负花状构造。这一认识表明，塔里木盆地北缘可能并非统一的构造—沉积环境，沙雅走滑构造带为一重要的构造—沉积分隔带，而加里东晚期与喜马拉雅早期是塔里木盆地北缘非常重要的2个构造变革期。
- 走滑构造 /
- 花状构造 /
- 构造变革 /
- 沙雅隆起 /
- 塔里木盆地
Abstract: The Shaya Uplift, an important structural belt in the northern Tarim Basin, northwestern China, has been regarded as a thrust belt. However, this recognition is not only incompatible with the flower structures on the seismic profiles, but also contradictory with the fault distribution in a broom or trailer mode in plan view. High-resolution 3D seismic profiles indicate that a two-stage strike-slip structural deformation happened in the Shaya Uplift. The first is from the Late Caledonian to the Indosinian, in which transpressional deformation occurred and a huge positive flower structure was thus formed in the deeper part, and strata were eroded because of the structural uplifting. The second is during the Himalayan, in which a negative inverted/transtensional deformation occurred and a negative flower structure was formed in the shallower part. These results indicate that it is not a uniform tectonic-sedimentary environment in the northern Tarim because of the Shaya Uplift barrier and that the Late Caledonian and the Early Himalayan may be two important structural transformation periods.
- strike-slip /
- flower structure /
- structural transform /
- Shaya Uplift /
- Tarim Basin

HTML全文

图 1 塔里木盆地沙雅隆起构造位置

F1.轮台断裂；F2.亚南断裂；F3.轮南断裂；F4.喀拉玉尔滚断裂；F5.羊塔克断裂；F6.英买7断裂

Figure 1. Tectonic location of Shaya Uplift, Tarim Basin

下载: 全尺寸图片幻灯片

图 2 塔里木盆地沙雅隆起轮台地区A-A’测线地震剖面

剖面位置见图 1。
F₁.轮台南断裂；F₂.轮台断裂；F₃.雅克拉断裂；F₄.亚南断裂；F₅.库南断裂

Figure 2. Seismic profile A-A' of Luntai area, Shaya Uplift, Tarim Basin

下载: 全尺寸图片幻灯片

图 3 塔里木盆地沙雅隆起库南地区B-B’测线地震剖面

剖面位置见图 1。
F₁.轮台南断裂；F₂.轮台断裂；F₃.轮台北①号断裂；F₄.轮台北②号断裂；F₅.雅克拉断裂；F₆.亚南断裂；F₇.库南断裂

Figure 3. Seismic profile B-B' of Kunan area, Shaya Uplift, Tarim Basin

下载: 全尺寸图片幻灯片

图 4 塔里木盆地沙雅隆起雅克拉断凸带白垩系底面断层分布

平面图位置见图 1。

Figure 4. Fault distribution of Cretaceous in Yakela Fault Uplift, Shaya Uplift, Tarim Basin

下载: 全尺寸图片幻灯片

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