Provenance petrological study of the Upper Vendian and Cambrian clastic material; foreland of the Pomeranian Caledonides (northern Poland)

Authors

  • Magdalena Sikorska Polish Geological Institute, Rakowiecka 4, PL-00-975 Warszawa

Keywords:

northern Poland, Lower Cambrian, Upper Vendian, clastic material, zircon.

Abstract

The provenance of clastic material in the oldest pan of the sedimentary cover of the East European Craton, in northen Poland, is analysed. Analysis of the Żarnowiec Formation sandstones (Upper Vendian-lowest Cambrian) confirm earlier views of a local origin. The crystalline basement in the Kościerzyna IG I region mainly yielded enderbitic detritus while that in the Gdańsk IG 1 region provided migmatitic detritus. Triangle diagrams of the overlying, mature, sandy marine Cambrian show unequivocally that the detritus was transported from the craton interior. Analysis of mono- and polycystalline quartz and cathodoluminescence (CL) analysis indicates erosion of metamorphic, magmatic and sedimentary rocks, and this is confirmed by CL observations of zircons. These results are consistent with the view that thc Upper Vendian and Cambrian strata on the Pomeranian Caledonides foreland were fonned on the passive margin of Baltica.

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Published

2013-01-06

Issue

Vol. 44 No. 3 (2000)

Section

Articles

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