Stratygrafia górnego ordowiku w Górach Świętkorzyskich

Abstract

ON THE STRATlGRAPHY OF THE UPPER ORDOVICIAN IN THE HOLY CROSS MTS.

Upper Ordovician series, consisting of black graptolitic shales and light trilobite-bearing mudstones, striking along the northern flank of the Łysogóry Range within the Holy Cross Mts., are described. The trilobite fauna there, with more than sixty species, is compared with the Upper Ordovician faunas of Sweden and Bohemia. A section of the Ordovician exposed at Zalesie near Łagów is shown to represent the Tremadocian and Arenigian only, above which rest the Dalmanitina beds. The age of Dalmanitina beds is discussed.