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首页> 外文期刊>Geodinamica Acta >Neogene stress field in the central and eastern parts of the outer Polish Carpathian Foredeep
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Neogene stress field in the central and eastern parts of the outer Polish Carpathian Foredeep

机译：波兰喀尔巴阡山脉前缘中部和东部的新近纪应力场

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摘要

The Polish Carpathian Foredeep (PCF) is a Foreland basin formed during the regional flexure of the East European continental lithosphere related to a continental collision in the Carpathian realm. The infill of the PCF basin consist of the uppermost Lower to the Upper Miocene (Otwangian-Pannonian) sediments. These are mostly mudstones and clays, more rarely sandstones, limestones and evaporites. Numerous thrusts, strike-slip and normal faults, and even folds exist in the whole PCE The orientation of these structures is variable but they show the privileged directions. The spatial analysis of structures and their crosscutting relationships, together with published seismic data permit conclude that the regional stress field in studied part of PCF was stable during the whole Neogene time till now. The orientation of the maximum horizontal stress axis was NNE-SSW. The local changes of the stress field orientation were caused by activity of the strike-slip fault in the foredeep basement or even the rotation of the basement blocks. The visible response on the basement activity were mostly outcrop-scale structures, namely the number and variety of structures are increasing in individual outcrop. However, the map-scale structures were also generated, for example so called Ryszkowa Wola Horst, a large pop-up structure.
机译：波兰喀尔巴阡Foredeep（PCF）是在东欧大陆岩石圈区域弯曲期间形成的前陆盆地，与喀尔巴阡地区的一次大陆碰撞有关。 PCF盆地的填充物由最上层的下至中新世（Otwangian-Pannonian）沉积物组成。这些主要是泥岩和粘土，很少是砂岩，石灰石和蒸发岩。整个PCE中存在大量的逆冲，走滑和正断层，甚至是褶皱。这些结构的方向是可变的，但它们显示了优先的方向。对结构及其横切关系进行空间分析，再加上已公开的地震数据，可以得出结论：在整个新近纪时期，PCF研究部分的区域应力场都是稳定的。最大水平应力轴的方向为NNE-SSW。应力场方向的局部变化是由前深层基底中走滑断层的活动甚至基底块的旋转引起的。对地下室活动的可见响应主要是露头规模的结构，即单个露头结构的数量和种类都在增加。但是，也生成了地图比例尺结构，例如所谓的Ryszkowa Wola Horst，这是一个大型弹出式结构。

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