Tectono-sedimentary evolution within the Tremp, Ainsa and Jaca basins northern Spain

西班牙北部特伦普盆地、艾因萨盆地和哈卡盆地的构造沉积演化

• 批准号: 36125100
• 负责人: Professor Dr. Tom McCann
• 金额: --
• 依托单位: Abteilung Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/36125100?language=en
• 关键词: Tectono; sedimentary; evolution; within; Tremp

Foreland basin systems are complex, large-scale features that respond to interacting complexes of variables. While models for extensional areas are well developed, this is not the case for regions where compressional activity is predominant. In particular, fades relationships within such systems (i.e. in terms of reservoir characterization) is poorly understood. Thus, studies linking tectonic and sedimentation processes within foreland systems are of profound importance. The Eocene Tremp-Pamplona Basin consists of three interlinked basins - the Tremp, Ainsa and Jaca basins - which are located within the Southern Pyrenees Foreland Basin. The Tremp Basin developed as a piggyback feature, while the Ainsa and Jaca basins evolved from a foredeep (Lower Eocene) to a piggy back (Upper Eocene) setting. These basins possibly form an interlinked depostional system with sediment being transported from E to W (Tremp to Jaca), although direct linkage and correlation between the three basins is not clear. The focus of this study will be to critically examine the major systems tracts of the region by defining a series of depositional sequences which will then be integrated into a sequence stratigraphic model, which can be related to the controlling mechanisms on basin formation, namely, regional subsidence related to flexure of the lithospheric plate on which the basin is located, and secondary controls such as local Hthology, climate and eustatic sea level.

前陆盆地系统是复杂的，大规模的功能，响应相互作用的复杂变量。虽然拉张区的模型已经很完善，但对于挤压活动占主导地位的区域，情况并非如此。特别是，人们对此类系统内的衰落关系（即储层表征方面）知之甚少。因此，研究前陆系统内的构造和沉积过程具有深远的意义。始新世特伦普-潘普洛纳盆地由三个相互连接的盆地组成-特伦普、安萨和雅卡盆地-它们位于南比利牛斯前陆盆地内。Tremp盆地是以背驮式特征发展的，而安萨和Jaca盆地则是从前渊（下始新世）发展为背驮式（上始新世）。这些盆地可能形成一个相互关联的沉积系统，沉积物从东向西（Tremp到Jaca）输送，尽管三个盆地之间的直接联系和相关性尚不清楚。本研究的重点将是通过定义一系列沉积层序来严格检查该地区的主要体系域，然后将其整合到层序地层学模型中，该模型可以与盆地形成的控制机制相关，即与盆地所在的岩石圈板块挠曲有关的区域沉降，以及次级控制，如局部Hthology，气候和海平面变化。