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Origin of marls from the Polish Outer Carpathians: lithological and sedimentological aspects

Górniak K.

Mineralogia

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2011

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Vol. 42, iss. 4

165--297

EN

Outcrops of marls, occurring within the sandstone-shaly flysch deposits of the Polish part of Outer Carpathians, considered to be locus typicus of these rocks, were described, measured and sampled. Lithologic features of marls, representing 15 complexes of different age and occurring in 15 complexes of various tectonic units, are presented (Fig. 1, 2). The present studies were concerning Jurassic marls from the Silesian Unit (Goleszów Marls), Upper Cretaceous marls from the Skole and Sub-Silesian Units (Siliceous-Fucoid and Węgierka Marls and Węglowka, Frydek, Jasienica and Zegocina Marls respectively), and Eocene-Oligocene marls from the Magura, Fore-Magura and Skole Units (Łącko, Zembrzyce, Budzów, Leluchów and Niwa, as well as Grybów and Sub-Cergowa and Dynów Marls respectively). The former opinions on lithology, age, formal subdivision, sedimentation conditions and genesis of these rocks are discussed (Table 1, 2; Fig. 1). Detailed description of the above mentioned marl-bearing complexes are presented and for each of them the typical lithological features are determined (Tables 3 - 20). The results of profiling are presented against the background of geological studies of the Carpathian marls. The results of lithologic studies are compared to form a classification scheme and are used as the basis of distinguishing genetic types of marls. Moreover, the interpretation of the conditions of sedimentation of these rocks is presented.

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Optymalne strzelanie : projektowanie i optymalizacja robót strzałowych na przykładzie kopalni margli

Brych M., Rogosz K.

Surowce i Maszyny Budowlane

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2012

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nr 2

32-36

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Gullies development in afforested slopes in Southeastern Spain

Ruiz-Sinoga J. D., Romero-Díaz A., Belmonte-Serrato F., Alonso-Sarría F.

Landform Analysis

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2011

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Vol. 17

173-176

EN

In semiarid regions, the main purpose of afforestation has been to provide a protective vegetative cover in order to prevent or reduce soil erosion. This paper shows the results of a study carried out in some areas afforested in the 1970s, in steep slopes and mostly in marls. Afforestation where performed using terraced with subsoiling, so the existing scrub vegetation was removed and Pinus halepensis was planted. The main conclusion is that human action developed in this semi-arid territory, perhaps because the technique applied was not the most suitable for afforestation, has led to the geomorphological activation of the slopes and the emergence and large development of gullies.

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Uranium-series dating of marly sediments: application to Jaroszów fossil lake (SW Poland)

Debaene G.

Geochronometria

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2003

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Vol. 22

15-26

EN

A U-series (230Th/U) study was carried out on the carbonate sediments from the fossil lake of Jaroszów (SW Poland). Six marly samples of unit 5 have been dated with isochron method. Two procedures for obtaining sub-samples have been investigated, the Successive Leaching (SL) and the Full Leaching (FL). It appears that with SL method thorium isotopes are subjected to isotope fractionation. On the other hand, FL method presents no significant isotopic fractionation and gives a wide range of values for isotopic ratios, which is very convenient for plotting isochrons. A simple graphical representation of sample sub-sets was created to detect isotopic fractionation. Even though FL procedure is efficient, results are not in agreement with stratigraphy. Three possible explanations can be given for these stratigraphic inconsistencies: (1) detrital contamination, (2) open system, and (3) mixing of carbonates of different ages.