Numerical simulation of palaeotectonic stress field in Yakela faulted salient,the Tarim Basin

罗小龙; 汤良杰

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Numerical simulation of palaeotectonic stress field in Yakela faulted salient,the Tarim Basin
Vol. 34, Issue 6, Pages: 841-846(2013)
Published：2013
DOI：
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DOI：

罗小龙, 汤良杰. Numerical simulation of palaeotectonic stress field in Yakela faulted salient,the Tarim Basin[J]. 2013, 34(6): 841-846. DOI：

摘要

雅克拉断凸长期处于挤压环境

逆断层发育

但在喜马拉雅早期正断层也发育。为了研究雅克拉断凸的断层发育特征

对海西晚期和喜马拉雅早期古构造应力场进行三维有限元数值模拟。结果表明

海西晚期整个研究区在挤压应力作用下皆为中、低应力值区

中、东部南侧是低应力值区

往北、往西应力值增加

该应力场导致研究区内部发育了一些规模较小的逆断层。喜马拉雅早期研究区在挤压应力作用下向上隆起

隆起幅度由西向东逐渐增加

隆起导致地层弯曲

且以边界断裂顶部附近区域弯曲度最大

导致此处的拉张应力也最大

正断层正是从此处开始发育

然后再向内发展;与此同时

研究区下部受到的挤压应力作用较小

导致内部的逆断层几乎没有进一步发育。

Abstract

Thrust faults are widely developed in Yakela faulted salient due to long-term compression regime. However

some normal faults were also formed during the Early Himalayanian. In order to decode the mechanism of formation and evolution of these faults

we conducted 3D finite element numerical simulation for the Late Hercynian and Early Himalayan stress field in the Yakela faulted salient. During the Late Hercynian

the compressive stress resulted in the low stress areas in the central and eastern parts of the Yakela faulted salient and the low to moderate stress in the west and north part. This stress field caused the development of some small-scale thrust faults in the Yakela faulted salient. During the Early Himalayan

the compressive stress induced uplifting of the study area

with the amplitude of uplifting increasing from west to east. As a result

the strata bended in the study area

with the strongest tensile stress occurring on top of the boundary fault

and normal faults were also developed in these locations and extended inwards. Meanwhile

compression stress was weak in the lower part of the whole study area

thus did not induce the further development of thrust faults in the inner parts of the study area.

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references

Md. Shofiqul Islam,Ryuichi Shinjo,J.R. Kayal.The tectonic stress field and deformation pattern of northeast India, the Bengal basin and the Indo-Burma Ranges: A numerical approach[J].Journal of Asian Earth Sciences,2010(1).

Salvatore Barba,Michele M.C. Carafa,Maria Teresa Mariucci,Paola Montone,Simona Pierdominici.Present-day stress-field modelling of southern Italy constrained by stress and GPS data[J].Tectonophysics,2009(1).

Alik Ismail-Zadeh,Abdelkrim Aoudia,Giuliano F. Panza.Three-dimensional numerical modeling of contemporary mantle flow and tectonic stress beneath the Central Mediterranean[J].Tectonophysics,2009(1).

Guiting Hou,Chuancheng Wang,Jianghai Li,Xianglin Qian.Late Paleoproterozoic extension and a paleostress field reconstruction of the North China Craton[J].Tectonophysics,2006(1).

罗小龙,汤良杰,谢大庆,邱海峻,蒋华山,杨勇,陈绪云,张宇航.塔里木盆地雅克拉断凸走滑作用及其形成机理[J].石油与天然气地质,2013(02).

黄继文,顾忆,丁勇,贾存善.塔里木盆地北部地区上奥陶统烃源条件[J].石油与天然气地质,2012(06).

万贵龙,张德会,张守仁,李胜虎.北大港构造带东翼华北期构造应力场模拟[J].地学前缘,2012(06).

范桃园,龙长兴,杨振宇,陈群策,吴中海,邵兆刚,仝亚博.中国大陆现今地应力场黏弹性球壳数值模拟综合研究[J].地球物理学报,2012(04).

张云鹏,任建业,阳怀忠,胡德胜,李朋.塔里木盆地轮南低凸起构造特征及演化[J].石油与天然气地质,2011(03).

王旭,沈建伟,杨红强,王月,刘永福.塔里木盆地轮古地区轮深2井蓬莱坝组沥青浸染样式[J].石油与天然气地质,2011(03).

王连捷,孙宝珊,王薇,乔子江,王红才,孙东生.地应力对油气运移的驱动作用[J].地质力学学报,2011(02).

田宜平,刘雄,李星,魏民.构造应力场三维数值模拟的有限单元法[J].地球科学(中国地质大学学报),2011(02).

崔军文,唐哲民.塔里木盆地构造格架和构造应力场分析[J].岩石学报,2011(01).

张胜利.构造应力场模拟——有限元理论、方法和研究进展[J].西北地震学报,2010(04).

孙晓庆.古构造应力场有限元数值模拟的应用及展望[J].断块油气田,2008(03).

王延欣,侯贵廷,李江海,潘懋.塔北隆起中西部新近纪末构造应力场数值模拟[J].北京大学学报(自然科学版)网络版(预印本),2008(01).