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| 西藏洞错地堑构造及其对油气的影响 | |
| 引用本文： | 刘玉法,李亚林,孙忠军,曹珂.西藏洞错地堑构造及其对油气的影响[J].沉积与特提斯地质,2007,27(1):50-53. |
| 作者姓名： | 刘玉法 李亚林 孙忠军 曹珂 |
| 作者单位： | 1. 成都理工大学,沉积地质研究院,四川,成都,610059 2. 中国地质大学,地球科学学院,北京,100083 3. 中国地质科学院,地球物理地球化学勘查研究所,河北,廊坊,065000 |
| 基金项目： | 国家自然科学基金;国家财政专项基金 |
| 摘 要： | 羌塘盆地托纳木地区新生代发育规模较大的洞错地堑构造,走向近南北,长度大于80km,由断隆带和断陷盆地组成,并对研究区地貌和水系格局有明显的控制作用。地堑活动始于中新世,现今仍处于活动之中,其形成可能受深部热动力学机制作用制约。沿地堑正断层存在明显的油气异常,对油气藏具有显著的破坏作用,不利于油气的保存。 |
| 关 键 词： | 羌塘盆地 地堑 新生代 油气 西藏 |
| 文章编号： | 1009-3850（2007）01-0050-04 |
| 收稿时间： | 2006-04-15 |
| 修稿时间： | 2006-04-152006-11-04 |
The Dongco graben structures and effects on the oil and gas preservation in the Tuonamu region, Xizang |
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| LIU Yu-f,LI Ya-lin,SUN Zhong-jun,CAO Ke.The Dongco graben structures and effects on the oil and gas preservation in the Tuonamu region, Xizang[J].Sedimentary Geology and Tethyan Geology,2007,27(1):50-53. | |
| Authors: | LIU Yu-f LI Ya-lin SUN Zhong-jun CAO Ke |
| Institution: | 1. Research Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, Sichuan, China; 2. School of Earth Sciences, China University of Geosciences, Beijing 100083, China ; 3. Institute of Geophysical and Geochemical Exploration, Langfang 065000, Hebei, China |
| Abstract: | The Cenozoic graben structures known as the Dongco graben,oriented nearly N-S and more than 80 km long,are well developed in the Tuonamu region,Qiangtang basin,Xizang,and consist of fault uplift zone and fault depression basin.These graben structures have an important effect on the local geomorphological features and drainage framework.The tectonic activities in the graben were initiated during the Miocene,and are still active in modern times.The formation of above-mentioned tectonic activities may be constrained by the deep-seated thermod ynamic mechanisms.The oil and gas anomalies are observed along the normal faults in the graben,indicating that the active faults in the graben may play a significant destructive role in the preservation of oil and gas pools. |
| Keywords: | Qiangtang Basin graben Cenozoic oil and gas Xizang |
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