Geographia Polonica (1976) vol. 33 1

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Planation surfaces in the light of the 1 : 300,000 geomorphological map of Poland

Maria Baumgart-Kotarba, Sylwia Gilewska, Leszek Starkel

Geographia Polonica (1976) vol. 33 1, pp. 5-23

Abstract

Planationsurfaces, being included into the contents of the 1:300,000 Geo-morphological Map of Poland, are surfaces of subaerial destruction which resulted from the joint action of various factors in pre-Pleistocene sensu stricto times. These surfaces cut across rocks of different resistance and vari-ous structures forming the Sudetes Mts., together with the Sudetes Foreland, the Central Polish Uplands and the Carpathians. North of lat. 51°N the down-warped Central Polish Uplands merge gradually beneath the unbroken cover of glacial and glacio-fluvial deposits. In the Polish Lowland, therefore, old sur-faces are now buried by Miocene, Pliocene and Pleistocene deposits (S. Biernat 1968; E. Ciuk 1961; F. Różycki 1956). Beyond the limit of the last Scandinavian glaciation, young destruction surfaces of exogenic origin also developed on the older glacial and glacio-fluvial deposits (J. Dylik 1953; K. Rotnicki 1966). A discussion of the fossil planation surfaces and Pleistocene surfaces of destruc-tion, however, falls outside the scope of this paper. Its aim is to show the regional differentiation in the development and state of preservation of the pre-Pleistocene planation surfaces in southern Poland in relation to morpho-structure, its general neotectonic tendencies and trends of evolution.Regional analysis is based upon the 1:300,000 Geomorphological Map of Poland which was prepared in the Cracow Branch of the Institute of Geo-graphy, Polish Academy of Siencies, during the period 1966 to 1973, acting in cooperation with specialists in regional geomorphology from Wrocław, Poznań, Warszawa, Lublin, Toruń and Gdańsk. The regional maps described in this paper were prepared by H. Piasecki (the Sudetes Mts. and Sudetes Foreland), S. Gilewska (the Uplands of Silesia and Małopolska), H. Maruszczak (the Lub-lin-Volhynian Upland), K. Klimek and L. Starkel (sub-Carpathian Basins) and L. Starkel (the Carpathians).

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Maria Baumgart-Kotarba, Institute of Geography and Spatial Organization, Polish Academy of Sciences, Św. Jana 22, 31-018 Kraków, Poland
Sylwia Gilewska, Institute of Geography and Spatial Organization, Polish Academy of Sciences, Cracow, Poland
Leszek Starkel, Institute of Geography and Spatial Organization Polish Academy of Sciences, 31-018 Krakow, Sw. Jana 22, Poland