Ewolucja tektoniczna regionu łysogórskiego Gór Świętokrzyskich

Abstract

TECTONIC EVOLUTION OF THE ŁYSOGÓRY REGION, HOLY CROSS MTS Summary The paper presents results of detail structural analysis of differences in geological development of the Kielce and Łysogóry regions, Holy Cross Mts (Figs. l, 2). The analysis showed that units of the Łysogóry region originated in several phases during the Variscan movements (Fig. 3). Three major phases of Variscan deformations may be identified here: l) a phase of latitudinal compression, responsible for weak folding and faulting, 2) a phase of meridional compression, representing the major phase of folding and responsible for origin of the major tectonic units in the Łysogóry region, and 3) a phase of uplift, resulting in differential rises along faults in the whole region. The analysis also showed that Laramie movements were here of minor importance, not resulting in any significant changes of tectonic pattern. The sedimentary basin of the Łysogóry region and the whole foreland of the East-European Platform was of the type of epicratonic basin in the Paleozoic and the whole platform foreland may be regarded as a Paleozoic epicratonic zone (Fig. 4), formed in a transitional zone between the Precambrian platform and Variscan geosyncline of western Europe.