Abstract Volcanic and subvolcanic alkaline rocks of the teschenite association of the Outer Western Carpathians are characterized by intensive late magmatic, post-magmatic, and also hydrothermal changes that modified their composition not only in rock-forming minerals, but also in accessory magnetic minerals (magnetite, titanomagnetite, maghemite) as indicated by magnetic susceptibility ranging from 10−5 to 10−1 SI units. The magnetic fabric of the most sills and dykes investigated is very roughly conformable to the shapes of the bodies corresponding to the most common type of magnetic fabric in dykes and sills, which no doubt originates through magma flow. However, the fabric shows large variation, much larger than expected for volcanic magnetic fabric, which can be ascribed to late magmatic or post-magmatic alterations of magnetic minerals diminishing the magnetic fabric homogeneity. Even though the teschenite association rocks occur in the sole part of the Silesian thrust sheet, their magnetic fabric and that of host sedimentary rocks show only very weak indications of ductile deformation. Consequently, the Silesian thrust sheet responded to the tectonic movements creating thrust sheet structure by faulting and thrusting of the deformed zones and not by ductile deformation of the bulk of the thrust sheet.

中文翻译：

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后岩浆作用对外西喀尔巴阡铁长岩组合岩磁性结构的影响

摘要 外西喀尔巴阡山脉的火山岩和亚火山岩碱性岩具有强烈的晚期岩浆、后岩浆和热液变化，不仅改变了成岩矿物的成分，而且改变了副磁性矿物（磁铁矿）的成分。 , 钛磁铁矿, 磁赤铁矿) 由 10-5 到 10-1 SI 单位的磁化率表示。所研究的大多数岩床和岩脉的磁性织物与岩脉和岩床中最常见的磁性织物类型对应的物体形状非常大致相符，这无疑是通过岩浆流产生的。然而，织物表现出很大的变化，比火山磁性织物预期的要大得多，这可以归因于磁性矿物的晚期岩浆或后岩浆蚀变，削弱了磁性织物的均匀性。尽管 teschenite 伴生岩出现在西里西亚冲断层的唯一部分，但它们的磁性结构和主沉积岩的磁性结构仅显示出非常微弱的韧性变形迹象。因此，西里西亚冲断层对构造运动的响应是通过变形带的断层和逆冲作用而不是通过大部分冲断层的延性变形来产生冲断层结构。