Processing and interpretation of lower crustal seismic events from recently released industry data to study the influence of deep rooted processes on formation and evolution of the North German Basin and their relation to neo-tectonic activities

中欧盆地系统的石勒苏益格-荷尔斯泰因地区在地质盘存、现有数据库以及在盆地演化方面的关键作用方面有资格成为杰出的“自然地球科学实验室”。石油和天然气行业收集了一个广泛的数据库。该数据库的主要部分可以在spp1135中进行研究。业界对发布的反射地震数据进行采集和处理，使用基本标准的CMP处理，将盆地沉积物成像到Zechstein，这是80年代最先进的技术。使用长偏移量（长达4.8公里）和长记录时间（长达14秒TWT）获得了几个行业概况。数据成像结晶地壳的潜力从未得到优化，只是被略微利用，尽管下地壳的结构和部分莫霍反射已经在（对于下地壳）粗CMP堆栈中可见。由于结晶地壳的结构提供了指导和影响盆地形成的深层过程的重要信息，我们希望利用现代成像方法，如共反射面（CRS）叠加和现代叠前深度偏移技术以及偏移速度分析，开发下地壳工业数据的成像潜力。莫霍深度、莫霍释放、莫霍多样性和可能的变质杂岩及其对地震特征的影响是研究的重点。此外，结晶地壳和断裂带内的地震事件及其可能的地表扩展是进一步讨论的主题。其中，新的图像将有助于阐明地震特征与地壳块体及其构造轮廓的关系，以及地壳下部结构与重力和磁异常的关系。它们将进一步提供阿瓦洛尼亚和元古代沉积物是否存在的证据，以及莫霍是否与700°C等温线有关。

The Schleswig-Holstein area of the Central European Basin System qualifies as an outstanding "natural geo-scientific laboratory" in terms of the geological inventory the available database and with regard to its key role in basin evolution. An extensive database was gathered by the Oil- and Gas Industry. Essential parts of this data base became available for research within the SPP 1135. The acquisition and processing by the industry of the released reflection seismic data was tuned to image the basin sediments down to the Zechstein using basically standard CMP processing which was state of the art in the 80ies. Several of the industry profiles were acquired using long offsets (up to 4.8 km) and long recording times (up to 14 sec TWT). The potential of the data to image the crystalline crust was never optimised and only marginally exploited although structures in the lower crust and partly also some Moho reflections were already visible in the (for the lower crust) brute CMP stacks. Since the structure of the crystalline crust provides important information on the deep processes steering and influencing basin formation we want to exploit the imaging potential of the industry data for the lower crust using contemporary imaging methods like the Common Reflection Surface (CRS) stack and modern pre-stack depth migration techniques as well as migration velocity analysis. Moho depth, Moho releif, Moho diversity and possible metamorphic complexes and their effects on siesmic signatures are some of the key issues do be investigated. Moreover, seismic events within the crystalline crust as well as fault zones and their possible surface extensions are further topics to be discussed. Among others, the new images will help to elucidate how seismic signatures relate to crustal blocks and its tectonic lineaments and how lower crustal structures are leated to gravimetric and magnetic anomalies. They will further provide insight whether there is evidence for Avalonia and of Proterozoic sediments and whether the Moho is related to the 700°C isotherm.