Geologia
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ISSN 0138-0974
e-ISSN: 2353-0782
Issue Date
2007
Volume
T. 33
Number
Nr 4
Description
Journal Volume
Geologia
T. 33 (2007)
Projects
Pages
Articles
Petrofizyczne uwarunkowania ropo-gazonośności utworów dewonu i karbonu w południowej części niecki miechowskiej w świetle wyników modelowań komputerowych
(Wydawnictwa AGH, 2007) Papiernik, Bartosz; Łapinkiewicz, Artur; Górecki, Wojciech
As a result of hydrocarbon exploration in the Palaeozoic formations of the Upper Silesian and Małopolska blocks covered by the Miocene deposits of the Carpathian Foredeep, commercial hydrocarbon accumulations have been discovered in Devonian rocks (Lachowice, Stryszawa, Zalesie, and Niwiska) and in Carboniferous rocks (Nosówka near Rzeszów, Marklowice). In the Miechów Trough, hydrocarbon shows in the Palaeozoic section are scarce, probably due to lacking Miocene seal. The paper presents results of spatial variability modelling of the lithofacies and reservoir parameters in the Devonian and Carboniferous deposits and in their direct cover, i.e. Triassic and Jurassic rocks. The 3D computer model for the area Proszowice - Busko - Pińczów (1200 km$^2$) was constructed on the basis of seismic and laboratory data and results of geophysical well logging. The obtained results indicate that the Devonian and Carboniferous carbonate deposits which predominate in the basement of the southern Miechów Trough represent poor reservoir rocks. However, it is the lack of good-quality regional seal that has essentially interfered with formation of »Palaeozoic« accumulations.
Wykształcenie facjalne warstw krośnieńskich w oknie tektonicznym Mszany Dolnej (polskie Karpaty Zachodnie)
(Wydawnictwa AGH, 2007) Stadnik, Renata
The present author studied the Krosno beds outcropped in the Mszana Dolna tectonic window within the Dukla Unit. These deposits are mainly developed as sandstones, sandstones with mudstones, mudstones with sandstones and mudstones. The following features: lithofacial development, thickness of layers, the percentage of sandstones in relation with the fine-grained rocks, clastic sediments sorting as well the character of bottom and top surfaces of layers and the presence of the positive and negative sequences in a profile were taken into account for the analysis of the geological profiled outcrops. Such sedimentological features of the Krosno beds indicate their depositional environment connected with the deep-sea fans, in the area of the lower fan, in the subenvironment of the depositional lobes, the lobe fringe and the fan fringe. Based on the microfossils the age of the Krosno beds has been indicated as Oligocene (zona NP24). The measured directions of the palaeotransport show that the distribution of the clastic material took place from the SW to the NE.
Malakofauna późnoglacjalnych i holoceńskich węglanowych osadów jeziornych północnej Polski
(Wydawnictwa AGH, 2007) Alexandrowicz, Witold Paweł
Late Glacial and Holocene mollusc-bearing deposits developed as lacustrine chalk and/or calcareous gyttja are widespread in Northern Poland. They fill up water bodies formed during the final stage of deglaciation. These sediments usually contains rich assemblages of molluscs. Calcareous lake deposits and it's malacofauna were described in detail by several authors in 54 localities. Eighteen communities of snails and bivalves have been distinguished. They are represents three types of environment: land, temporary water bodies and permanent water bodies (lakes). The composition and structure of malacocenoses reflect changes of the climate and differentiation of habitats. Three types of malacological sequences can be define. The scheme of evolution water bodies during the Late Glacial and Holocene in Northern Poland was elaborated based on successions of molluscan communities.
Zawartość Na, Ca, Cl i proporcje między tymi składnikami jako wskaźnik pochodzenia przejawów wodnych w złożu Wieliczka
(Wydawnictwa AGH, 2007) Winid, Bogumiła; Witczak, Stanisław
Processes which affect the chemical components of waters (mostly brines) of the Wieliczka Salt Mine can be described by the relationships between the main ions. Infiltration waters leaking into the deposit are dissolving its soluble components, primarily halite (NaCl). $Na^+$ and $Cl^-$ are the main chemical components of water connected with the salt deposit. For water mineralized by the dissolution of salt, the molar ratio $\frac{rNa^{+}}{rCl^{-}}$ is close to 1 because such proportions between ions appear in crystals of the rock-salt. The proportion between $Na^{+}$ and $Ca^{2+}$ reflects the following processes: ion exchange, evaporation, dissolution and precipitation of the halite, calcium sulphates and carbonates, and also dolomitization and dedolomitization. Hence these processes can be represented by the diagram »deficit Na - excess Ca«. The diagram shows evidence of infiltrating origin of water circulating in the the Wieliczka salt deposit.
Właściwości mieszanin gruntowo-popiołowych i ich wykorzystanie w inżynierii środowiska
(Wydawnictwa AGH, 2007) Rybicki, Stanisław; Górniak, Katarzyna; Gaweł, Adam
The paper presents the results of studies on physico-mechanical, mineralogical and structural properties of mixtures composed of cohesive dump soils originating from the »Turów« lignite open pit mine and fly ash derived from the »Turów« power plant, which burns lignite from this mine. The dump soils, which include mostly Miocene clays with minor sands and gravels were mixed with variable proportions of raw fly ash, desulphurized fly ash from pulverized fuel furnaces and desulphurized fly ash from fluidized fuel furnaces. Fly ash and soil mixtures have been subjected to setting for 28 days under the optimum moisture content. Then physical and chemical properties, phase composition, mineralogical composition and microstructures were determined. Similar properties were measured for soils and for three types of fly ash. The results demonstrated the increasing shear strength parameters - mainly cohesion, particularly for mixtures of fluidized fly ash and soil. The changes and pecularities of mineral and phase compositions, and mixrostructures were described, which control the properties of mixtures. The possible applications of fly ash and soil mixtures in environment engineering were proposed.