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W jaki sposób struktura podłoża warunkuje rozwój osuwiska translacyjnego? Przykład osuwiska we Włodowicach w Obniżeniu Noworudzkim (Sudety Środkowe)

Kowalski Adam

Przegląd Geologiczny

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2022

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Vol. 70, nr 9

722--732

EN

In this contribution the author presents the results of geological and geomorphological field mapping and structural analyses conducted within the area of a newly recognized landslide situated near Włodowice, in the southern part of the Nowa Ruda Basin (Central Sudetes, SW Poland). The landform is located within the eastern limb of the Intra-Sudetic Synclinorium (Nowa Ruda Monocline) built of Upper Carboniferous to Lower Permian (Rotliegend) sedimentary rocks. Geomorphological characteristics of the landslide are presented, but the greatest attention is paid to the way of transformation of individual structural elements of basement rocks (bedding surfaces, sets of fractures) by mass movements. The study allows recognition and interpretation of landslide type according to failure mechanism - the analysed form represents a typical translational landslide with a flat, structural slip surface related to bedding planes. A model of the development of a translational landslide under specific geological conditions (monoclinal structure built of different lithological varieties of sedimentary rocks with different rheological properties) is presented. Due to the partial exposure of the slip surface in the upper and lower parts of the landslide, the form should be considered unique among the previously identified landslides in the Sudetes Mts. During this study the author repeatedly confirms the usefulness of analyses of LiDAR models in landslide investigations.

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Wstępna charakterystyka mineralogiczna czarnych łupków antrakozjowych z obszaru synklinorium śródsudeckiego

Wójcik-Tabol Patrycja, Dąbek Jolanta, Nowak Grzegorz J.

Przegląd Geologiczny

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2021

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Vol. 69, nr 6

389--392

EN

Anthracosia Shales within the Pennsylvanian-Lower Permian continental succession from the Intra-Sudetic Synclinorium are lacustrine sediments, represented by black shales intercalated with sandstones/mudstones. Mineral composition of each lithology consists of quartz, feldspar, mica, clay minerals (including kaolinite, the content of which decreases upward the section), and carbonates (calcite and siderite). The section is a continuous record of reduction and rise in terrigenous input. Mineral detritus is least weathered in the uppermost part of the Anthracosia Shales. The sedimentation occurred under dysoxic conditions that were ventilated by bottom currents.

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Geneza i geologiczne uwarunkowania rozwoju form osuwiskowych w środkowej części Obniżenia Noworudzkiego w Sudetach

Kowalski Aleksander

Przegląd Geologiczny

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2021

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Vol. 69, nr 10

666--697

EN

The paper presents the results of field mapping and structural analyses conducted within the landslides situated near Ludwikowice K³odzkie, in the central part of the Nowa Ruda Basin (Middle Sudetes, SW Poland). The area affected by mass movements is located within the eastern limb of the Intra-Sudetic Synclinorium (Głuszyca Monocline) composed of Upper Carboniferous to Lower Permian (Rotliegend) sedimentary rocks. Nine individual landslide forms, ranging in area from 0.5 to 22.7 ha, including two landslide complexes (Sokółka landslides, 49.7 ha in total area) have been identified and described in terms of their origin and geological conditions. Studies of landslide morphology and structural analysis allow recognition of several types of mass movements. They include: (i) rotational landslides (landslides Sokółka 1-3 and 5); (ii) translational slides (landslides Miłków 1-3); (iii) deep-seated, compound landslides (landslide Sokółka 4), and (iv) topple evolving into deep-seated rotational (?) slide (Sławosz landslide). The studies repeatedly confirm the usefulness of analyses of LiDAR digital elevation models coupled with field investigations and structural analyses.

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Komory dyfuzyjne-przykład zróżnicowanej reologicznie reakcji osadu ziarnistego na wstrząs sejsmiczny

Wojewoda J.

Przegląd Geologiczny

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2008

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Vol. 56, nr 9

842-847

EN

Frontally fluidized slump sheet containing water-and-sediment escape structures, interpreted as earthquake-driven deposit occur in Permian conglomerates in Golińsk (Saxonian, Mieroszów Conglomerate Member) in the Intrasudetic Synclinorium. Their internal architecture, lithology and position within the slump sheet suggest a rheologically differentiated reaction of sediment to the seismic shock - from brittle failure to liquefaction. The onset of the latter involved diffusional grain displacement in zones of contrasting density resulted from brittle fracture in unconsolidated sediment.