Integrated basin analysis of the Brazilian Atlantic continental margin, sequence stratigraphy and numerical basin modeling

巴西大西洋大陆边缘综合盆地分析、层序地层学和数值盆地模拟

• 批准号: 79419864
• 负责人: Dr. Rainer Zühlke
• 金额: --
• 依托单位: Institut für Geowissenschaften
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/79419864?language=en
• 关键词: Integrated; basin; analysis; Brazilian; Atlantic

The Brazilian margin records the rift to drift development of the western South Atlantic margin from Jurassic to recent times. This project focuses on offshore seismic data in the Campos, Santos and Pelotas Basins in order to qualitatively analyse the development of this rifted margin and its key controlling factors. Seismostratigraphic and well log analysis, basin modeling and stratigraphic simulation represent the key methodologies. They will be applied to three available, representative and high-resolution 300-340 km long seismic transects with calibrating wells. Seimic lines cover the rift-to-drift basin fill and are spread NE-SW over 1200 km in order to account for large-scale lateral variations in controlling processes along the western South Atlantic margin. The main objectives include a high-resolution sequence stratigraphic model and an integrated numerical basin model, linking accommodation and sedimentflux to plate-tectonic reconfigurations in the oceanic or cratonic realm. The project promises new, generally applicable results on the temporal and spatial development of rifted margins and their sedimentary processes. The project is closely related to companion projects (i) on the conjugate eastern South Atlantic margin, (ii) the southerly adjacent Uruguayan and Argentinian margins, (iii) the subsidence/uplift history of source areas on the Brazilian craton and (iv) numerical modeling of deep lithosphere-mantle processes.

巴西大陆边缘记录了从侏罗纪到近代南大西洋西部大陆边缘裂谷到漂移的发展。该项目的重点是Campos、桑托斯和Pelantis盆地的近海地震数据，以便定性分析这一裂陷边缘的发展及其关键控制因素。地震地层学和测井分析、盆地建模和地层模拟是关键方法。它们将应用于三个现有的、有代表性的、高分辨率的300-340公里长的地震剖面，并带有校准威尔斯井。地震线覆盖了裂谷-漂移盆地填充物，并在1200 km范围内向东北-西南方向传播，以解释控制过程中的大规模横向变化，沿着西南大西洋边缘。主要目标包括一个高分辨率层序地层模型和一个综合盆地数值模型，将可容纳空间和沉积物通量与大洋或大洋板块的板块构造重组联系起来。该项目有望在断裂边缘及其沉积过程的时空发展方面取得新的、普遍适用的成果。该项目是密切相关的同伴项目（一）共轭东南大西洋边缘，（二）南部相邻的乌拉圭和阿根廷的边缘，（三）巴西克拉通源区的沉降/隆起历史和（四）深部岩石圈地幔过程的数值模拟。