The evolution of the southern margin of Eastern Europe (Eastern European and Scythian platforms) from the Latest Precambrian- Early Palaeozoic to the Early Cretaceous
The evolution of the southern margin of Eastern Europe (Eastern European and Scythian platforms) from the Latest Precambrian- Early Palaeozoic to the Early Cretaceous
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东欧南缘（东欧和斯基泰地台）从晚前寒武纪—早古生代到早白垩世的演化
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发表时间：
2006
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通讯作者：
V. Starostenko
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作者：
A. Saintot;R. Stephenson;S. Stovba;M. Brunet;T. Yegorova;V. Starostenko
东欧大陆南部主要由一个厚的文迪安台地和覆盖在前寒武纪基底上的较年轻的沉积物组成，称为东欧和斯基泰台地（EEP和SP）。晚泥盆世普里皮亚季-第聂伯-顿涅茨克裂谷盆地、卡尔平斯基隆起、佩尔莫（？）SP的三叠纪海槽，以及从多布罗加到克里米亚和大高加索的变形带，其中露出了古生代的岩石，形成了影响欧洲岩石圈这一部分的地球动力学过程的记录。硬约束的古生代历史的SP是非常稀疏。传统观点认为SP是晚古生代造山带。然而，它表明，少数可用的数据也是一致的替代解释，它是变薄的前寒武纪大陆边缘，改造晚古生代-早中生代裂谷事件。大陆边缘的地球动力学背景被经典地报道为整个晚古生代和早中生代的活跃会聚，古特提斯洋俯冲到欧洲之下。实际上，没有直接的观察限制在这个地区的古特提斯俯冲的极性，虽然间接证据与传统的模式并不矛盾。在这种情况下，SP的沉积构造记录表明，在二叠纪-三叠纪（？）在早侏罗世和中侏罗世时期，早-辛梅阶（晚三叠世-早侏罗世）事件广泛存在，意味着构造挤压体制，大多数沉积盆地发生系统性反转。在中侏罗世末和晚侏罗世也有广泛的不整合。这些可以被解释为挤压构造的指示;然而，没有任何地方有强烈的缩短或其他造山过程的证据。对该地区提出了一个修正的构造模型，但鉴于该地区地质特征的不确定性程度，最好将其视为进一步讨论的基础。
Abstract The southern part of the Eastern European continental landmass consists mainly of a thick platform of Vendian and younger sediments overlying Precambrian basement, referred to as the East European and Scythian platforms (EEP and SP). Some specific geological features, such as the Late Devonian Pripyat-Dniepr-Donets rift basin, the Karpinsky Swell, the Permo(?)-Triassic troughs of the SP, and the deformed belt running from Dobrogea to Crimea and the Greater Caucasus, in which rocks as old as Palaeozoic crop out, form a record of the geodynamic processes affecting this part of the European lithosphere. Hard constraints on the Palaeozoic history of the SP are very sparse. The conventional view has been that the SP is a Late Palaeozoic orogenic belt. However, it is shown that the few available data are also consistent with an alternative interpretation in which it is the thinned margin of the Precambrian continent, reworked by Late Palaeozoic-Early Mesozoic rifting events. The geodynamic setting of the margin is classically reported as one of active convergence throughout the Late Palaeozoic and Early Mesozoic, with subduction of the Palaeotethys Ocean beneath Europe. Actually, there are no direct observations constraining the polarity of Palaeotethys subduction in this area although indirect evidence is not inconsistent with the conventional model. In such a case, the sedimentary-tectonic record of the SP suggests that convergence during the Permo-Triassic(?) and certainly during the Early and Mid-Jurassic was oblique. An Eo-Cimmerian (Late Triassic-Early Jurassic) event is widespread and implies a tectonic compressional regime with systematic inversion of most sedimentary basins. There is also a widespread unconformity at the end of the Mid-Jurassic and in the Late Jurassic. These can be interpreted as indicators of compressional tectonics; however, nowhere is there evidence of intense shortening or other orogenic processes. A revised tectonic model is proposed for the area but, given the degree of uncertainty characterizing the geology of this area, it is best considered as a basis for further discussion.