Late Cretaceous to Recent post-breakup evolution of the African S-Atlantic margin: integrating onshore field studies; sequence development, offshore seismic data, numerical dating and modelling

在纳米比亚南大西洋边缘部分解体后，记录了火山作用、隆起和下沉的多个阶段--与已公布的其他大陆边缘解体后序列的例子相比，这些特征被认为是非典型的。目前尚不清楚这些地球动力学过程是仅具有区域意义，还是具有更广泛的南大西洋洲际重要性。通过(A)近海工业地震和测井资料(最重要的是2S TWT)的解释和(B)陆上沉积档案的分析，如解体后的河流沉积序列、海洋阶地、风成岩、古海堤、切割的山谷和正断层上盘的同构造地层，可以有利地完成和校准现有的低T热计时分析、基岩表面的宇宙学同位素测量以及解体后序列的构造和地层分析。陆上和近海地层都提供了伴随南大西洋边缘解体和解体后演化的高分辨率过程档案。许多沿海海洋阶地含有可用于生物地层分析的可测年物质，结合ESR和OSL测年。近海地震结构和地层分析以及钻井数据将与详细的三维地层学和构造分析以及动态正演模拟相结合，这构成了一个综合的三维陆上-近海表面-地下模型的基础。

Multiple phases of volcanism, uplift and subsidence are recorded after the breakup of the Namibian South Atlantic margin segment – features which are regarded as atypical when compared to published examples of other post-breakup continental margin successions. It is currently not understood whether these geodynamic processes are only of regional or a broader, South Atlantic intercontinental importance. Existing low T thermochronometric analyses, cosmogenic isotope measurements on bedrock surfaces and tectonic and stratigraphic analysis of the post-breakup succession could be advantageously completed and calibrated by (A) the interpretation of offshore industrial seismic and well log data (uppermost 2s TWT) and (B) the analysis of onshore sedimentary archives such as post-breakup fluvial depositional sequences, marine terraces, aeolianites, palaeo-seacliffs, incised valleys and syntectonic strata in the hanging-walls of normal faults. Both, onshore and offshore strata provide a high-resolution archive of processes accompanying the breakup and post-breakup evolution of the South Atlantic margin. Many of the coastal marine terraces contain dateable material suitable for biostratigraphic analysis combined with ESR and OSL dating. Offshore seismic structural and stratigraphic analysis and well data will be integrated with a detailed 3D stratigraphic and structural analysis as well as dynamic retro- and forward modelling which forms the basis for a combined 3D onshore-offshore surface-subsurface model.