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首页> 外文期刊>Surveys in Geophysics >Depth-Recursive Tomography of the Bohemian Massif at the CEL09 Transect—Part B: Interpretation
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Depth-Recursive Tomography of the Bohemian Massif at the CEL09 Transect—Part B: Interpretation

机译：CEL09断面处的波西米亚断层的深度递归层析成像-B部分：解释

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In the accompanying paper (Part A), depth-recursive tomography was applied to the CEL09 refraction data. A deblurred P-wave velocity image was obtained down to a depth of 20 km. This paper (Part B) is devoted to the interpretation of the upper- and middle-crustal structures of the Bohemian Massif imaged in the CEL09 section. Because of inherent ambiguity of the refraction method in imaging low-velocity zones, other well-known results based on other geophysical data sets are also used to independently verify the interpreted velocity features. Comparison with the density and velocity models previously obtained indicates that the presented P-wave velocity image has superior resolution revealing or verifying a number of geological features. The prominent lateral velocity changes encountered in the CEL09 pattern across the imaged crustal section were used to delineate the main terranes and deep regional fault zones such as the Krušné hory Fault, the SW continuation of the Litoměřice Fault Zone, the West and Central Bohemian Shear Zones, the Blanice-Rodl Fault, the Přibyslav-Vitis Fault and the Boskovice-Diendorf Fault. The 450-km-long CEL09 transect reveals seven major deeply rooted high-velocity (HV) anomalies identified as Variscan massifs intruded near or within these deep fault zones. They form buried ridges mostly parallel to the SW-NE trending Variscan strike. Their discovery allows new insights into a number of phenomena such as the West Bohemian earthquake swarms, the Saxothuringian paradox, the character of the Saxothuringian-Barrandian contact zone, the detachment surface due to the slab of the Saxothuringian crust subducting beneath the Teplá-Barrandian zone in the Devonian, the depth extent of the Mariánské-Lázně Complex (MLC) as an equivalent unit of the Zone Erbendorf-Vohenstrauss (ZEV), the subsidence of the Barrandian syncline, the root zones of the Central and South Bohemian Plutons, the accretionary wedge formed along the Moravo-Moldanubian suture and its link with the Gföhl terrane, the Carpathian foreland relief and the subsidence observed in the Vienna Basin.
机译：在随附的论文（A部分）中，将深度递归层析成像技术应用于CEL09折射数据。在低至20 km的深度下获得了去模糊的P波速度图像。本文（B部分）致力于解释CEL09部分中成像的波西米亚地块的上，中地壳结构。由于折射方法在低速区域成像中存在固有的歧义性，因此基于其他地球物理数据集的其他众所周知的结果也用于独立验证解释后的速度特征。与先前获得的密度和速度模型的比较表明，所呈现的P波速度图像具有出色的分辨率，可以揭示或验证许多地质特征。 CEL09模式在整个成像地壳剖面中遇到的显着横向速度变化被用来描绘主要地层和深部区域断层带，例如Krušnéhory断层，Litoměřice断层带的SW延续，西部和中波希米亚剪切带，布兰妮丝-罗德断裂，普比比斯拉夫-维蒂斯断裂和博斯科维采-迪恩多夫断裂。 450公里长的CEL09断面揭示了七个主要的深层高速（HV）异常，这些异常被确定为侵入这些深层断裂带附近或内部的瓦里斯坎地块。它们形成了大部分与SW-NE趋势瓦里斯坎走向平行的掩埋山脊。他们的发现为许多现象提供了新的见解，例如西波西米亚地震群，萨克斯图林人悖论，萨克斯图林人-巴兰迪安接触带的特征，萨克斯图林根地壳俯冲在特普拉-巴兰迪安带下方的板块导致的脱离面。在泥盆纪，Mariánské-Lázně复合体（MLC）的深度范围与Erbendorf-Vohenstrauss（ZEV）区域的等效单位，Barrandian向斜的沉降，中波西米亚Plutons的中部和根部，增生沿Moravo-Moldanubian缝合线形成的楔形及其与Gföhl地形，喀尔巴阡前陆地形和在维也纳盆地观测到的沉降的联系。

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