GEOLOGIA

Permanent URI for this communityhttps://repo.agh.edu.pl/handle/AGH/102763

Tytuł archiwalny!

Adres wydawniczy: Kraków : Wydawnictwa AGH, 1975-2011
Do 1993 r. wydawane w ramach serii „Zeszyty Naukowe AGH”.
ISSN: 0138-0974 e-ISSN: 2353-0782
Aktualny tytuł: Geology, Geophysics & Environment (2012-)

Do 1993 r. wydawane w ramach serii Zeszyty Naukowe AGH. Od 2012 roku tytuł Geology, Geophysics & Environment.

Roczniki i numery

Browse

Search Results

Now showing 1 - 10 of 402

Access status: Open Access ,
Pilotowa instalacja odsalania wód geotermalnych w Polsce
(Wydawnictwa AGH, 2011) Tomaszewska, Barbara; Hołojuch, Grażyna
The pilot geothermal water desalination installation in Poland was commissioned at the Geothermal Laboratory of the Mineral and Energy Economy Research Institute of the Polish Academy of Sciences (PAS MEERI). Laboratory is localised in Podhale region, in south-eastern Poland. Geothermal waters are extracted from carbonate formations of the Middle Eocene and from Middle Triassic limestones and dolomites. These exhibit relatively low mineralisation - 3 g/dm$^{3}$. Their temperature at the well outlet ranges 90°C. Installation is supplied with water at a temperature of about 35°C. The capacity has been set at 1 m$^{3}$/hour of desalinated water. The objective of geothermal water desalination will be to obtain water that meets the requirements stipulated in the regulation of the Minister of Health of 29 March 2007 (Journal of Laws of 2007, No. 61, item 417) concerning the quality of water intended for human consumption. The preliminary results from the geothermal water desalination study conducted at the PAS MEERI are optimistic. In order to validate the assumptions made in the context of industrial applications, further studies have to be conducted in accordance with the project plans. It is certain, however, that the utilization of geothermal water for drinking purposes on an industrial scale will require, first of all, better and more efficient water cooling. Optimum utilization of the thermal waters obtained is an important issue for most geothermal plant both in Poland and abroad. Efficient geothermal water management has one main goal: optimizing system operation and improving the economics of geothermal plant operation. Additionally, the use of cooled water for drinking purposes, particularly for open drain installations (without injecting cooled water into the formation) will contribute to the comprehensive utilization of geothermal water and the decentralization of drinking water production. Therefore the present study concerns two significant research areas: geothermics (cooled water utilization methods) and hydrogeology (water management).
Access status: Open Access ,
Sprawozdanie z konferencji ługowniczej SMRI w Lipsku, 3-6 października 2010
(Wydawnictwa AGH, 2011) Urbańczyk, Kazimierz
Access status: Open Access ,
»Szlaki nowej przygody«. Już wkrótce w Kopalni Soli »Wieliczka«
(Wydawnictwa AGH, 2011)
Access status: Open Access ,
Struktura wewnętrzna i geneza współczesnej pokrywy solnej solniska Salar de Uyuni (Boliwia) w świetle badań tomograficznych
(Wydawnictwa AGH, 2011) Burliga, Stanisław; Dohnalik, Marek
This paper presents the results of a study on the internal structure of modern salt crust of Salar de Uyuni in SW Bolivia. Additionally, the structure of desiccation fissure infill was investigated. X-ray microtomography was used as the main analytical method because it enabled the complete structure of the sample's interior to be imaged without its destruction. Based on microtomographic images three layers were distinguished in the crust between the surface and its base: a halite shell at the top, a cellular halite layer in the middle and a large-pore halite layer at the base. Results revealed that the desiccation fissures are filled with extremely porous bubble-halite. Distribution of mud in the sample as well as wash-out of the surfical halite crystals indicate the cyclicity of halite dissolution, its crystallisation and mud accumulation. These observations provide an explanation for low rate salt accumulation in the salt pan. This leads to the conclusion that the observed layering in the rocks does not reflect annual sedimentation-evaporation cycles but rather long-term cycles.
Access status: Open Access ,
Zespoły mięczaków w vistuliańskich lessach we wsi Chobrzany koło Sandomierza (południowa Polska)
(Wydawnictwa AGH, 2011) Alexandrowicz, Witold Paweł
Malacological analysis was conducted on shell material from loess profile in Chobrzany village located near Sandomierz. This particular profile represents a vertical wall, up to 6.5 m high. Its upper part is composed of typical, yellow loess with vertical cracks covered by recent soil. In the lower interval the occurrence of poorly visible lamination and carbonate concretions is observed. Six species of snails were identified. These belong to the so-called »loess species«. Several types of molluscan communities can be distinguished on the basis of faunistic changes. These molluscs' assemblages correspond with the palaeoenvironment and they allow for palaeoclimatic and stratigraphical reconstructions. The results of malacological analysis indicate that the loesses in Chobrzany could belong to the youngest loess sequence (Upper Younger Loess), which were deposited during Pleniglacial Phase of Vistulian.
Access status: Open Access ,
Metoda polaryzacji wzbudzonej w prospekcji złóż węglowodorów
(Wydawnictwa AGH, 2011) Wojdyła, Marek; Stefaniuk, Michał; Sada, Marek; Sito, Łukasz
The paper presents the method of induced polarization (IP) and focuses on its application to direct prospecting for hydrocarbon deposits. Induced polarization parameters that are obtained from measurements in time domain and frequency domain are presented. Classification of minerals and rocks based on induced polarization parameter was analyzed. Five examples of application of induced polarization method to discovering and recognizing hydrocarbon deposits by foreign companies were given. Methodology of field works made in Carpathians and Carpathian Foredeep with the use of equatorial and dipole-dipole arrays was described. Maps of phase parameter evaluated from results of equatorial array measurements for Grabownica and Rudka deposits as well as the plot of phase parameter along profile cutting the area of Rylowa deposit were analyzed. Cross-sections of three induced polarization parameters were made and analyzed with CSAMT resistivity sections in the area of Rudka deposit.
Access status: Open Access ,
Metody elektromagnetyczne w prospekcji naftowej
(Wydawnictwa AGH, 2011) Stefaniuk, Michał
Hydrocarbons saturating rocks give rise to anomalous changes in physical properties of geological medium and measured geophysical fields, thus allowing discovering and recognizing of oil and gas fields. Deposit complexes are characterized by resistivity increased by 1-4 orders of magnitude. Resistivity contrast appear at the lower boundary of deposit, between reservoir rock saturated with mineralized water and saturated with hydrocarbons, as well as at the upper boundary with low-resistivity sealing clayey rocks. Moreover, a contrast of environment's ability to electric polarization induced by electric current flow appears at the boundary between hydrocarbons and formation water. The indirect indicator of a hydrocarbon deposit is the near-surface zone of sulfide mineralization connected with the hydrocarbon diffusion, which modifies magnetic properties and electric polarization ability of the medium. Examples of investigations made in the zone of the Carpathian oil field »Grabownica« and gas field »Rudka« in the Carpathian Foredeep are presented.
Access status: Open Access ,
Rozwój tektoniczno-basenowy Karpat zewnętrznych na przykładzie budowy geologicznej złóż Grabownica, Strachocina i Łodyna oraz ich otoczenia
(Wydawnictwa AGH, 2011) Jankowski, Leszek; Probulski, Jaromir
Łodyna, Grabownica, Strachocina, Wańkowa and Leszczowate oil fields are situated in the northern margin of the central Carpathian Depression, on both sides of so called Węglówka Unit and it's prolongation to the East. Fieldwork and seismic section interpretations indicate multistage and complexity of process of closing basin and tectonic deformation. During the compression and oblique collision stage of the tectonic deformation southern margin of Węglówka horst was reactivated as a strike-slip fault and associated (with this strike-slip) flower structures were developed. The Węglówka intrabasinal ridge (horst) was cut in many places off and a few tectonic elements has been created. In front of the Silesian Unit thrust a footwall shortening is visible. The whole area of these oil fields is apparently connected with reactivated tectonic zone, southern margin of formerly intrabasinal Węglówka ridge. In the last stage of deformation some thrust and strike-slip structures were reactivated as a normal faults (posttectonic collapse structures). Immaturity of the Menilite Beds in this region suggests a lack of relationship between the local oil and Menilite Beds and indicates migration origin of local oil. A lots of tectonic mélange zones developed in this area play important role in petroleum system creating open or closed geochemical system - in some cases they are migration paths for gas and oil. However, main migration paths in this seems to be deep rooted, reactivated, normal faults normal to the strike of main tectonic elements, probably inherited from syncollisional extension stage.
Access status: Open Access ,
Pola elektromagnetyczne źródeł dipolowych
(Wydawnictwa AGH, 2011) Miecznik, Juliusz
Equations satisfied by vectors of electric and magnetic field were derived based on Maxwell's equations. In the case of time-dependent harmonic fields these are so called wave equations. Potential functions, i.e. vector potential and scalar potential, that also satisfy the wave equation were used. Vector and scalar potentials are related with electric and magnetic field by means of a number of equations. To determine the electromagnetic field in a non-homogeneous medium one should define the boundary conditions for vectors of electric and magnetic field and vector potential. The paper presents analytical formulae for EM field components for electric dipole and magnetic dipole in a homogeneous space and half-space. Parameters of real measurement arrays that fulfill conditions of electric dipole and magnetic dipole are given. So called near zone and far zone for EM survey are defined. EM field of infinitely long cable and ungrounded loop is characterized.
Access status: Open Access ,
Kompleksowe badania geofizyczne i geologiczne w celu rozpoznania nagromadzenia osadów ochrowych w rejonie miejscowości Zabratówka koło Rzeszowa
(Wydawnictwa AGH, 2011) Gołębiowski, Tomisław; Sala, Dariusz; Ratajczak, Tadeusz
This article presents the results of comprehensive research on ochre sediments from the Zabratówka, village near Rzeszów. Fourteen boreholes were drilled in the investigation area for visualization of geological structures and for collecting ground samples for further laboratory measurements. Geochemical, mineralogical and petrophysical analyses were carried out in laboratory and their results were correlated to prepare a geophysical interpretation model. Preliminary georadar surveys were conducted between boreholes to analyze the possibilities and limitations of this measurement technique used in outlining Carpathian ochre accumulations. Detailed three-dimensional georadar surveys were carried out in the selected area of the research site and the results of geophysical measurements were correlated with the information from boreholes and laboratory tests.

GEOLOGIA

Browse

Filters

Advanced Search

Filter by

Settings

Sort By

Results per page

Search Results