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Gęstość objętościowa pokrywy osadowej na Lubelszczyźnie

Rosowiecka O., Królikowski C.

Przegląd Geologiczny

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2014

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Vol. 62, nr 9

456--462

EN

The paper presents the results of analyzes executed within the project carried out by the Polish Geological Institute – National Research Institute. The purpose was to develop a density model of sedimentary cover in, inter alia, the Lublin region, on the basis of archival laboratory measurements. The source material consisted primarily of a database of archival measurements made on samples taken from drill cores. Since the sampling was often fragmentary and missed long intervals of the section, it was necessary to develop a methodology for estimating the density of such blank intervals. Trend equations of density changes with depth were determined on the basis of existing measurements, which helped in the estimation. For each stratigraphic period, density weighted average was calculated, where the thickness of each depth interval was the weight. Juxtaposition of such average densities with the arithmetic means, with or without taking into account the estimated values, indicates the pros and cons of the methodology. The final step was to construct the following: density maps of each stratigraphic period, maps of density contrast at the top-bottom contact of two stratigraphic periods and density maps at selected depth levels.

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The phymosomatid echinoid Trochalosoma taeniatum from the Maastrichtian (Upper Cretaceous) of southeast Poland

Jagt J., Kin A.

Acta Geologica Polonica

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2010

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Vol. 60, no. 3

429-435

EN

The phymosomatid Trochalosoma taeniatum (von Hagenow, 1840) is recorded for the first time from upper Maastrichtian strata exposed at Piotrowice, near Lublin, southeast Poland. Although fragmentary, the single, moderately preserved test is of note in representing one of the larger individuals of this species on record (estimated diameter > 60 mm), and in displaying crenulate ambulacral and interambulacral tubercles, at least adapically. Previous records of T. taeniatum include the lower and upper Maastrichtian of Denmark, northern Germany (Rugen), Alava (northern Spain) and Mangyshlak (Kazakhstan). Trochalosoma corneti (Cotteau, 1875), from the upper Maastrichtian of southern and northeast Belgium (Mons and Liege basins, respectively) and the southeast Netherlands (type area of the Maastrichtian Stage), synonymised by some authors with T. taeniatum, is considered to be distinct.

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Permskie przemagnesowanie utworów węglanowych dewonu południowej Polski : próba powiązania z procesami diagenetycznymi

Grabowski J., Narkiewicz M., Nawrocki J., Waksmundzka M. I.

Przegląd Geologiczny

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2002

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Vol. 50, nr 1

78-86

PL

Badania paleomagnetyczne 9 fragmentów rdzeni węglanów środkowo- i górnodewońskich pochodzących z Lubelszczyzny (otwory Giełczew PIG 5 i 6) i Górnego Śląska (otwór Goczałkowice IG 1) wykazały obecność wczesnopermskiego przemagnesowania, opartego na magnetycie. W Giełczwi intensywność przemagnesowania wykazuje korelacje z przejawami późnej dolomityzacji, natomiast w Goczałkowicach ze zjawiskami utleniania pirytu. Przemagnesowania są czasowo i, być może, genetycznie związane ze zwiększonym strumieniem cieplnym, wulkanizmem i migracją gorących roztworów we wczesnym permie.

EN

Paleomagnetic investigations of 9 bore core fragments of Middle and Upper Devonian carbonates from theLublin (boreholes Giełczew PIG 5 and 6) and Upper Silesia region (borehole Goczałkowice IG I) revealed the presence of the Early Permian remagnetization related to magnetite. The intensity of remagnetization correlates either with late dolomitization (Giełczew) or oxidation ofpyrite (Goczałkowice). The remagnetization is temporally and probably genetically linked to an increased heat flow, volcanism and hot fluid migration in the Early Permian.