| 吐哈盆地中央构造带正反转演化特征 |
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| 引用本文： | 朱文斌,马瑞士,郭令智,孙岩,徐鸣洁,胡德昭,王锋.吐哈盆地中央构造带正反转演化特征[J].大地构造与成矿学,2003,27(2):125-131. |
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| 作者姓名： | 朱文斌 马瑞士 郭令智 孙岩 徐鸣洁 胡德昭 王锋 |
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| 作者单位： | 南京大学地球科学系,江苏,南京,210093 |
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| 基金项目： | 油气藏地质及开发工程国家重点实验室基金(编号:PLN0105)资助成果. |
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| 摘 要： | 吐哈盆地中央构造带由火焰山构造和七克台构造组成。中央构造带形成于三叠纪晚期至侏罗纪早期,表现为伸展构造特征,生长断层上盘地层厚度明显大于下盘,并于断层上盘所在的台北凹陷形成沉降中心。晚侏罗世,由于拉萨陆块与欧亚大陆的碰撞作用导致吐哈盆地由伸展盆地转变为挤压盆地,中央构造带也于此时发生构造反转,由早期的伸展正断层转变为挤压逆断层。发生于55Ma的喜山构造事件对天山地区产生了深刻的影响,但影响时间略有滞后,大致发生在晚渐新世至早中新世,中央构造带即在此次构造事件中强烈变形,逆冲出露于地表。
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| 关 键 词： | 吐哈盆地 中央构造带 生长断层 正反转构造 |
| 文章编号： | 1001-1552(2003)02-0125-07 |
| 修稿时间： | 2002年11月13日 |
POSITIVE INVERSION STRUCTURE OF THE CENTRAL STRUCTURAL BELT IN THE TURPAN-HAMI BASIN |
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| ZHU Wen bin,MA Rui shi,GUO Ling zhi,SUN Yan,XU Ming jie,HU De zhao and WANG Feng.POSITIVE INVERSION STRUCTURE OF THE CENTRAL STRUCTURAL BELT IN THE TURPAN-HAMI BASIN[J].Geotectonica et Metallogenia,2003,27(2):125-131. |
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| Authors: | ZHU Wen bin MA Rui shi GUO Ling zhi SUN Yan XU Ming jie HU De zhao and WANG Feng |
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| Abstract: | The central structural belt in the Turpan Hami basin is composed of the Fire Mountain structure and Qiketai structure formed in late Triassic early Jurassic, and is of characteristics of extensional tectonics. The thickness of strata in hanging wall of growth fault is larger than that of footwall. The collision between the Lhasa block and Eurasia continent resulted in tectonic inversion of the Turpan Hami basin from extensional basin to compressional basin at the end of Late Jurassic. The extensional normal fault of the central structural belt reversed to be compressional reverse fault because of this event. The Tertiary collision between India and Asia has played the most important role in reactivation of ancient faults since their initial collision at 55 Ma. The effect of collision in the Tianshan area was somewhat late and began in late Oligocene early Miocene. The central structural belt has been strongly deformed and exhumes as a result of this tectonic event. |
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| Keywords: | Turpan Hami basin Central structural belt Growth fault Positive inversion structure |
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