...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>AAPG Bulletin >The Perdido fold belt, northwestern deep Gulf of Mexico, Part 1: Structural geometry, evolution and regional implications
【24h】

The Perdido fold belt, northwestern deep Gulf of Mexico, Part 1: Structural geometry, evolution and regional implications

机译：墨西哥北部西北部的Perdido褶皱带，第1部分：结构几何，演化和区域意义

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Perdido fold belt is a frontier petroleum exploration province located in deep waters of the northwestern Gulf of Mexico. The anticlines are northeast-southwest-trending, symmetrical to asymmetrical, with concentric folds usually bounded on both flanks by steep reverse faults. The folds are interpreted as detachment-folds cored by autochthonous Middle Jurassic Louann Salt, The fold belt overlies rifted transitional crust characterized by northeast-southwest-trending basement highs and northwest-southeast transverse structures that;controlled the original salt thickness and subsequent fold geometry. Upper Jurassic-Eocene strata were folded during the early Oligocene (36-30 Ma), with deformation possibly continuing into the earliest Miocene, Postkinematic sediments gradually buried the folds, with younger strata progressively onlapping the highest structures. Some folds were reactivated during the middle Miocene, and a late phase of broad uplift during the Pliocene-Pleistocene is attributed to loading of the Louann Salt by the advancing Sigsbee salt nappe. The Perdido fold belt marks the basinward margin of a complex, linked system of gravitational spreading above salt, Updig Paleogene sedimentary loading and associated extension were accommodated downdip primarily by salt canopy extrusion. The 5-10% shortening and folding occurred only after canopy feeders were evacuated and closed off. Subsequent loading and deformation were concentrated at higher, allochthonous levels. [References: 52]
机译：佩迪多褶皱带是位于墨西哥西北海湾深水区的前沿石油勘探省。背斜为东北-西南走向，对称至不对称，同心褶皱通常由陡峭的逆断层界定在两侧。褶皱被解释为以自生中侏罗统洛安盐为核心的分离褶皱。褶皱带覆盖在裂谷过渡地壳上，其特征为东北-西南趋势的基底高和西北-东南东南的横向结构;控制了原始盐的厚度和随后的褶皱几何形状。上新世（36-30 Ma）早侏罗世-始新世地层被折叠，变形可能持续到最早的中新世，后运动沉积物逐渐掩盖了褶皱，年轻的地层逐渐重叠了最高构造。在中新世中期，一些褶皱被重新激活，并且在上新世—更新世期间，广泛隆升的后期归因于前进的Sigsbee盐尿素加载了Louann盐。 Perdido褶皱带标志着一个复杂的，相互联系的重力在盐之上散布的系统的向底边缘，Updig古近纪的沉积载荷和相关的延伸主要通过盐冠层挤压来向下倾斜。 5-10％的缩短和折叠仅在抽空并关闭了天蓬喂食器后才发生。随后的载荷和变形集中在较高的异源水平。 [参考：52]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号