Autor: Urban, Jan - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Strukturalne, litologiczne oraz tektoniczne uwarunkowania rozwoju i ewolucji świętokrzyskich skałek piaskowcowych
Structural, lithological and tectonic constraints on the development and evolution of sandstone tors in the Świętokrzyskie (Holy Cross) Mountains
Autorzy:: Urban, Jan
Powiązania:: https://bibliotekanauki.pl/articles/2076050.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: turnie
piaskowce
morfogeneza
litologia
tektonika
Góry Świętokrzyskie
crags
sandstones
morphogenesis
lithology
tectonics
Świętokrzyskie Mts.
Opis:: Majority of ca. 90 sites ofsandstone crag groups and individual crags, occurring in the Świętokrzyskie (Holy Cross) Mts. region, represent the following crag-forming lithostratigraphic units: Cambrian Wiśniówka Formation, Devonian Barcza Fm and Zagórze Fm, Triassic Zagnańsk Fm and Krynki Beds, as well as Jurassic Skloby Fm and Ostrowiec Fm. Specific features of these rocks are the occurrence of sandstone series, up to 20 m thick, above more plastic, clayey or heterolithic series, high-energy depositional environments, and siliceous composition. The crag-forming sandstones differ in the amount of siliceous cement: from strongly cemented Paleozoic quartzitic sandstones to porous Mesozoic sandstones with poor cement, which determines diverse mechanical properties. Strongly cemented Paleozoic rocks display high rock strength and abrasion resistance, while porous and theoretically friable Mesozoic sandstones are characterised by high grain packing due to compaction. Regarding the principal role of gravitational disinte¬gration of rock massifs under the periglacial conditions in the Pleistocene, other factors constraining the crag formation and shaping are the tectonic situation of rocks (orientation of strata and joints), adequate joint spacing, and bed thickness. The interrelations between lithological and structural features of crag-forming sandstones and tectonics, conditioning erosion and weathering rates are specific for particular types of these sandstones.
Źródło:: Przegląd Geologiczny; 2020, 68, 2; 112--126
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Dziedzictwo geologiczne
Geological heritage
Autorzy:: Urban, Jan
Migoń, Piotr
Radwanek-Bąk, Barbara
Powiązania:: https://bibliotekanauki.pl/articles/2076132.pdf
Data publikacji:: 2021
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: geodziedzictwo
geostanowiska
geokonserwacja
georóżnorodność
geoheritage
geosites
geoconservation
geodiversity
Opis:: Geoheritage (geological heritage), that is tangible evidence of geological past and contemporary processes, is increasingly recognized as a valuable component of environment, worth conservation and popularization. It comprises elements of Earth's geodiversity, which are significant for scientific, educational, cultural, ecological or aesthetic reasons. Among them, the key role is played by geosites, at which elements of geoheritage are best exposed and have the most evident value. Various classifications of geosites by the main theme have been proposed and various methods of evaluation of geosites exist, involving among others, assessment of their scientific importance, cultural/historical value, threats and educational opportunities. Geoheritage in a given place or area may have global, national, regional or local significance. Globally significant geoheritage is protected at UNESCO World Heritage properties and in UNESCO Global Geoparks. In Poland, geoheritage is protected in national and landscape parks, more than 110 nature reserves, more than 1600 nature monuments and more than 120 sites of special scientific interest (documentary sites). This paper opens a section of "Przegląd Geologiczny", in which representative geosites of Poland will be successively presented.
Źródło:: Przegląd Geologiczny; 2021, 69, 1; 16--20
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Rzeźba strukturalna obszaru Świętokrzyskiego Parku Narodowego
Structural morphology of the area of the Świętokrzyski National Park
Autorzy:: Łajczak, Adam
Urban, Jan
Rączkowska, Zofia
Wałach, Grzegorz
Powiązania:: https://bibliotekanauki.pl/articles/2076052.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: morfologia strukturalna
pasma wzgórz
gołoborza
turnie
Góry Świętokrzyskie
structural morphology
hill ranges
block fields
crags
Holy Cross Mountains
Opis:: The area of the Świętokrzyski National Park is one of the most evident examples of structural morphology in Poland. Its relief is clearly determined by bedrock lithology: the hill ranges are composed of hard quartzitic sandstones of the upper Cambrian (Łysogóry Range) and the Lower Devonian (Klonowskie Range), while the depressions, usually vast and flat-bottomed, are distributed on outcrops of soft, easily weathered and eroded Ordovician and Silurian shales, greywackes and sandstones. The parallel pattern of hill ranges and depressions, as well as a mesh-grid pattern of river valley systems and the antecedent character of river gaps, reflects fold tectonics modified by transverse faults. Such a morphology developed during the Paleogene and Neogene under hot and then warm, gradually cooling climatic conditions. In the Pleistocene, principally under the periglacial conditions, block fields (symbols of the Świętokrzyski NP) and crags (crests, table-like forms, cupolas and spurs) were formed. The shape and spatial position of most crags are related to geological structures.
Źródło:: Przegląd Geologiczny; 2020, 68, 2; 102--111
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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