Publication details
Soft-sediment deformation structures in Lower Badenian (Middle Miocene) foreshore sands and their trigger mechanism (Carpathian Foredeep Basin, Czech Republic).
| Authors | |
|---|---|
| Year of publication | 2014 |
| Type | Article in Periodical |
| Magazine / Source | Austrian Journal of Earth Sciences |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | foreshore deposits-Lower Badenian-density gradient-paleoseismicity-liquefaction-fluidization |
| Description | Soft-sediment deformation structures have been recently recognized within Lower Badenian deposits of the Carpathian Foredeep in the outcrop near Oslavany (Moravia, Czech Republic). The deformed unit is sandwiched between undeformed foreshore deposits. The lithology (medium to fine, fine and very fine grained sands and silty sands) of both the deformed and the undeformed units is very similar. The deformation structures have been grouped into two categories, i.e. contorted and intruded. The contorted structures consist of convolute folds, contorted lamina sets and pillow-shaped structures. Cusps, dish and pillar structures, and sandy flame structures represent the intruded structures. The deformation mechanism is interpreted to be due to liquefaction/fluidization, and the seismic activity in the area under study is assumed to have been the trigger mechanism. |
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