| 张欣欣.东秋里塔格构造带构造特征及油气勘探区带[J].地质与勘探,2014,50(6):1190-1197 |
| 东秋里塔格构造带构造特征及油气勘探区带 |
| Structural features of the eastern Qiulitage tectonic belt and hydrocarbon exploration implications |
| 投稿时间：2014-08-01 修订日期：2014-09-27 |
| DOI： |
| 中文关键词: 塔里木盆地 东秋里塔格 挤压构造 油气勘探区带 |
| 英文关键词: Tarim Basin, eastern Qiulitage, compressional structure, hydrocarbon exploration |
| 基金项目: |
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| 中文摘要: |
| 东秋里塔格构造带是塔里木盆地库车坳陷的前缘构造带，整体表现为受新近系吉迪克组膏盐岩滑脱层控制的分层变形构造特征。盐上构造层主要发育断层相关褶皱，盐岩层以塑性流动变形为主，盐下构造层发育断层相关褶皱、冲起构造、逆冲断块等多种构造样式。依据盐下构造层变形特征，自西向东将东秋里塔格构造带划分为过渡构造段、叠瓦扇构造段、前端冲起构造段以及后端冲起构造段四段。过渡构造段内膏盐岩层发育层位由库姆格列木群转变为吉迪克组，盐下发育叠瓦扇构造；叠瓦扇构造段盐下发育典型逆冲叠瓦构造样式；前端冲起构造段盐下发育断弯褶皱背斜，并在反冲断层的复合作用下发生冲起，主逆冲断层之下发育次级逆冲夹片；后端冲起构造段盐下发育断弯褶皱，并在背斜北翼发育一个独立的冲起构造。东秋构造带具备有利生储条件，构造分析表明过渡构造段、叠瓦扇构造段以及前端冲起构造段的盐下次级逆冲夹片具备勘探潜力，是有利的油气勘探区带。 |
| 英文摘要: |
| The eastern Qiulitage tectonic belt is a frontal structural belt of the Kuqa depression. Different deformations appear in different structural layers. The gypsum and halite in the Jidike Formation of Neogene controls the structural style. The up-salt structural layers mainly develop fault-related folds, and the salt-rock layer develops plastic transformation, while the presalt has a series of thrust structural styles, such as fault-related folds, pop up structure and thrust blocks. Depending on the presalt deformation styles, from east to west, the eastern Qiulitage tectonic belt can be divided into 4 segments: structural transition segment, imbricate fan segment, frontal pop up structure segment and rear-end pop up structure segment. The layer developing halite is switched from the Kumugeliemu Group to the Jidike Fomation in the structural transition segment, and the presalt develops imbricate fans; the presalt of imbricate fan segment develops the classic imbricate fan structural style; and frontal pop up structure segment develops a combination of fault-bend folds and pop up structure in the subsalt layers. And there are thrust clips under the main thrust fault; rear-end pop up structure segment also develops fault-bend folds and pop up structure, but they are relatively independent. The generation and reservoir conditions for hydrocarbon of the eastern Qiulitage tectonic belt are good. The analysis of structural framework indicates that in the structural transition segment, imbricate fan segment and frontal pop up structure segment, the thrust clips under the main thrust faults have a certain exploration potential and may be favorable zones for further exploration. |
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