Permo-Triassic unconformities in the Central European Basin: Their petrographic, geochemical and petrophysical fingerprints and tectonic implications

中欧盆地晚二叠世/早三叠世序列多次受到与特提斯和北极-北大西洋裂谷早期相关的构造脉冲的影响。差异构造沉降的影响由形成广泛层序界面的不整合面特别好地记录下来。通过综合分析现有的地震剖面、电缆测井和野外露头数据，将研究这些不整合的解剖、剥蚀厚度以及岩石学、地球化学和岩石物理特征。层序地层学概念被用来建立来自(A)对比沉积环境(海相影响的阿尔卑斯三叠纪与北欧的陆相河流和风沙)和(B)对比构造(裂谷与“克拉通”盆地)的时间等效层序之间的高分辨率对比。拟议的项目旨在识别、分离和量化层序发育的构造控制。优先问题是：在这些不同的沉积和构造环境中，不整合是如何表现出来的，以及提供住宿空间的相关构造输入是什么？不整合的分布、几何形状和剥蚀厚度的了解不仅提供了有关中欧盆地古构造环境的关键信息，而且对HC储集层建模和地震剖面分析也具有重要意义。已发表的结果将评估构造作用在层序发育中的潜在相对重要性，从而将作为校准层序地层和其他地方油气藏调查的基线研究。

The Late Permian/Early Triassic succession of the Central European Basin was repeatedly affected by tectonic pulses associated with the earliest phases of Tethyan and Arctic-North Atlantic rifting. Effects of differential tectonic subsidence are particularly well recorded by unconformities which form widespread sequence boundaries. The anatomy, thickness of erosion and the petrographic, geochemical and petrophysical characteristics of such unconformities will be examined by an integrated analysis of available seismic sections, wireline logs and field outcrop data. Sequence stratigraphic concepts are used to establish a high-resolution correlation between time-equivalent sequences from (A) contrasting depositional settings (marine influenced Alpine Triassic vs non-marine fluvial and aeolian of N. Europe) and (B) contrasting tectonic (rift vs "cratonic" basin) settings. The proposed project aims to identify, separate and quantify tectonic controls on sequence development. Priority questions are: How are unconformities expressed in these contrasting depositional and tectonic settings and what is the relevant tectonic input to the provision of accommodation space? Knowledge of the distribution, geometry, and erosional thickness of unconformities provides not only key information on the palaeotectonic setting of the Central European basin but is also of great importance for HC reservoir modelling and seismic section analysis. Published results will evaluate the potential relative importance of tectonism in the development of sequences generally and thus will stand as a baseline study by which to calibrate sequence stratigraphic and hydrocarbon reservoir investigations elsewhere.