Publication details
Diagenetické a syntektonické stylolity v pražské synformě, paleozoikum barrandienu
| Title in English | Diagenetic and syntectonic stylolites in the Prague Synform, Barrandian Palaeozoic |
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| Authors | |
| Year of publication | 2015 |
| Type | Article in Proceedings |
| MU Faculty or unit | |
| Citation | |
| Field | Seismology, vulcanology, and Earth structure |
| Keywords | Barrandian, diagenesis, paleostress, Paleozoic, pressure solution, limestone, fold, fold axe, axial surface, Prague Synform, stylolite, tectonics |
| Description | Stylolites are serrated boundaries between units that forms by pressure enhanced dissolution. Occurrence of stylolites in the Devonian and Silurian limestones of the Prague synform (Barrandian) was observed by many scientists, however presence of tectonic stylolites were mentioned only by few. Our detailed study on stylolites was conducted on more than 20 localities in the area between the Beroun and the Prague. Stylolite columns orientation showed relationship with the orientation of the bedding. After the unfolding of the bedding and the stylolites it was found that two distinct groups of stylolites are present: first one is represented by stylolite teeths that are oriented aproximately perpendicular to bedding, and the second one with bedding parallel stylolite teeths that forms girdle oriented S – ESE with average to the southeast. Poles of fold axial planes are oriented to southeast like the bedding parallel stylolite teeths, documenting the same orientation of compresional stress. Rotation of the stylolites documents that they were formed before main folding. Stylolite teeths that are perpendicular to the bedding are less common and they are proably of the diagenetic origin. Bedding parallel stylolite teeths were created during horizontal compression that caused thrusting and folding of the Lower Paleozoic in the Prague Synform. |