THE VARISCAN DIRECTIONS FROM THE UPPER SILESIAN COAL BASIN (S-POLAND)

Year, pages: 1993, 293 - 300

Middle Devonian dolomites and Namurian–Lower Westphalian clastic sediments from the Upper Silesian Coal Basin were investigated. A total number of 151 hand oriented samples were taken from 8 localities. In the dolomites two secondary directions of Upper Carboniferous and Lower Permian age were isolated. In the clastic sediments three (A1, B, C) directions were obtained. The post-deformational direction A1 is characteristic for the Upper Carboniferous/Lower Permian of the ''stable'' Europe. The directions similar to A1, B, C occur in various tectonic units from the western part of European Variscides. A geological hypothesis is possible, that weakly consolidated mid-Variscan structure rotated clockwise in the Late Westphalian. As a result of this ''hinge'' rotation a big shortening of the Variscan basin (mainly Rhenohercynian Zone) might take place. However, in the other hand the anomalous directions C and B could have a non-dispolar origin.

Nawrocki, J. 1993. THE VARISCAN DIRECTIONS FROM THE UPPER SILESIAN COAL BASIN (S-POLAND). In Geologica Carpathica, vol. 44, no.5, pp. 293-300. 1335-0552.

Nawrocki, J. (1993). THE VARISCAN DIRECTIONS FROM THE UPPER SILESIAN COAL BASIN (S-POLAND). Geologica Carpathica, 44(5), 293-300. 1335-0552.