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Sedimentological record of changing hydrodynamic conditions in the upper Tremadoc deposits of the Holy Cross Mountains, Poland

Trela W.

Geological Quarterly

2001

Vol. 45, No 2

131-142

In the upper Tremadoc, in the Kielce region of the Holy Cross Mountains, siltstones and fine-grained sandstones are interbedded with chalcedonites and claystones. The deposits were probably laid down when the late Tremadoc transgression reached its maximum. Storm currents influenced deposition at times while, during calm periods, sedimentation of chalcedonites, clayey cherts and clays took place. Weak bottom currents affected the deposition of siliceous layers. The deposits accumulated on a distal shelf.