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首页> 外文会议>GCSSEPM Foundation Bob F Perkins Research Conference >Regional Seismic-Based Comparison of Syn- and Postrift Sequences in Salt and Salt-Free Basins Offshore Brazil and Angola/Namibia, South Atlantic
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Regional Seismic-Based Comparison of Syn- and Postrift Sequences in Salt and Salt-Free Basins Offshore Brazil and Angola/Namibia, South Atlantic

机译：基于区域地震的基于盐水盆地脱水盆地的基于地震序列比较巴西和安哥拉/纳米比亚，南大西洋

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摘要

This study focuses on a regional comparison of interpretations from selected 2D seismic transects between large salt and salt-free basins offshore southern Brazil (Espirito Santo basin, Campos basin, Santos basin, and Pelotas basin) and southwest Africa (Kwanza basin, Benguela basin, Namibe basin, and Walvis basin). Based on tectonostratigraphic analysis of megasequences and first-pass geometric reconstructions of synrift settings, including sedimentary decompaction and isostatic correction, it provides a comprehensive basin-to-basin documentation of the key geological parameters controlling asymmetries in basin evolution. The diversity in the tectonic and stratigraphic architecture of the conjugate margin basins reflects variations in the interplay of a number of controlling factors, of which the most important are: (A) the structural configuration of each margin segment at the time of break up; (B) the postbreakup subsidence/ uplift history of the respective margin segment; (C) variations in the type, quantity, and distribution of margin sediment (including salt); (D) the evolution of the large salt basins during sag to postsag stages; and (E) sea-level changes.
机译：本研究重点介绍了从巴西南部大盐和无盐盆地所选的2D地震横断面的解释的区域比较（Espirito Santo Basin，Campos Basin，Santos Basin和Pelotas Basin）和西南非洲（Kwanza Basin，Benguela Basin， Namibe盆地和Walvis盆地）。基于MegaseQuences的构造数据库分析和同步设置的初级几何重建，包括沉积分解和等静压校正，它为控制盆地进化中的不对称的关键地质参数提供了全面的盆地到盆地文献。结合边缘盆地的构造和地层架构中的多样性反映了许多控制因子的相互作用的变化，其中最重要的是：（a）在分手时每个边缘段的结构配置; （b）各自保证金分部的临时沉降/隆起历史; （c）边缘沉积物的类型，数量和分布的变化（包括盐）; （d）在下垂到邮政阶段期间大盐盆地的演变; （e）海平面变化。

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