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First evidence of seismically-induced deformations in fluvial deposits of the Lower Rotliegend in the Intra-Sudetic Basin, SW Poland
Geological Quarterly ( IF 1 ) Pub Date : 2024-03-14 , DOI: 10.7306/gq.1722
Izabela Ploch, A.J. (Tom) Van Loon, Marek Awdankiewicz, Sebastian Voigt, Paweł Raczyński

The Lower Rotliegend in the Intra-Sudetic Basin, situated at the northern margin of the Bohemian Massif, is represented in the Polish part of the basin by the Krajanów and Słupiec formations. Both formations consist of fluvial and lacustrine deposits. The sedimentary processes during the deposition of the Słupiec Formation were influenced by volcanic activity that resulted in subvolcanic intrusions, lava flows and ignimbrites. Some slabs of fluvial sediments from the Słupiec Formation show a level consisting entirely of soft-sediment deformation structures, in particular load casts, sometimes representing successive phases of loading. These deformations are interpreted to record volcanism-related earthquakes. Also a level full of load casts in the fluvial part of the Słupiec Fm. can feasibly be explained only be earthquakes that must be ascribed to a volcanic eruption

中文翻译:

波兰西南部苏台德盆地下罗特列根德河流沉积物地震诱发变形的第一个证据

苏台德盆地内的下罗特列根德 (Lower Rotliegend) 位于波希米亚地块的北缘,在该盆地的波兰部分以 Krajanów 和 Słupiec 地层为代表。这两个地层均由河流和湖泊沉积物组成。Słupiec 地层沉积期间的沉积过程受到火山活动的影响,导致火山下侵入、熔岩流和熔凝岩。Słupiec 地层的一些河流沉积物显示出完全由软沉积物变形结构组成的水平面,特别是荷载铸件,有时代表连续的荷载阶段。这些变形被解释为记录了与火山有关的地震。Słupiec Fm 河流部分也充满了荷载。只能将地震解释为火山喷发
更新日期:2024-03-14
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