Temat: Carpathian sandstones - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Porównanie petrografii i diagenezy piaskowców karpackich z różnych jednostek litostratygraficznych
Comparison of petrology and diagenesis of the Carpathian sandstones from various lithostratigraphic units
Autorzy:: Leśniak, Grzegorz
Powiązania:: https://bibliotekanauki.pl/articles/2075975.pdf
Data publikacji:: 2019
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: piaskowce karpackie
petrologia
diageneza
Carpathian sandstones
petrology
diagenesis
Opis:: Petrographic research was carried out on 549 thin sections representing Carpathian sandstones of the Lower Cretaceous to Miocene sediments from the Silesian and Skole units (east of Gorlice town). They represented the Lgota, Spass, Inoceramian, Stryj, Istebna, Jamna, Ciężkowice, Menilite, Polanica, Boryslav, Kliwa, and Krosno sandstones. The first goal of the study was to determine the composition of rockframework as well as the types, quantities and distribution of cements. The granulometric composition of sandstones is very diversified, varying from very fine-grained (similar to mudstones) to fine-grained or coarse-grained sandstones. Sorting of detrital grains is rather poor. Only fine-grained sandstones exhibit the better sorting. The investigated rocks can be described as arenites and wackes, sublitharenites, lithoarenites, subarkoses and arkoses. In the next step of research, analyses of diagenetic processes and their influence on the change ofporosity were also carried out. Results of the study of rock framework composition and the type and amount of cements allowed me to compare similarities and differences of the Carpathian sandstones from various lithostratigraphic units.
Źródło:: Przegląd Geologiczny; 2019, 67; 175--178
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Characteristics of diagenesis, isotopic relations and reservoir properties of the Middle Miocene sandstones in the Carpathian Foredeep (Poland and Ukraine)
Autorzy:: Jarmołowicz-Szulc, K.
Kozłowska, A.
Kuberska, M.
Powiązania:: https://bibliotekanauki.pl/articles/2060000.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: diagenesis
reservoir properties
sandstones
isotopic analyses
Middle Miocene
Carpathian Foredeep
Opis:: The Upper Badenian and Sarmatian sandstones recognized from boreholes in southeastern Poland and western Ukraine are very fine to medium-grained subarkosic and sublithic arenites and wackes. The deposits underwent diagenesis well below 100°C, and their evolutionary pathways of diagenetic and related reservoir properties represent eo- and mesodiagenesis. Eodiagenesis here comprised mechanical compaction, development of chlorite, microcrystalline calcite, pyrite, siderite, kaolinite and quartz, and dissolution of feldspar and mica grains. Mesodiagenesis included quartz and K-feldspar overgrowths, albitisation, crystallisation of dolomite and ankerite and coarsely crystalline calcite, dissolution of feldspar grains and carbonate cement, and illite growth. The isotopic data of δ18OVPDB of carbonate cements suggest their crystallisation from porewater which is a mixture of marine and meteoric waters. The δ13CVPDB values suggest derivation of carbon from microbial methanogenesis of organic matter. The 87Sr/86Sr values in coarsely crystalline calcite are higher than those of Badenian seawater. The radiogenic strontium may have been supplied during diagenesis by meteoric waters draining the continental area. The Middle Miocene sandstones show better filtration abilities (good and very good) in the western part of the study area (Poland) than in the east. Primary intergranular porosity is more frequent than secondary intragranular and intercrystalline porosities.The primary porosity was diminished due to compaction and cementation from west to east. Some increase in porosity was caused by dissolution of detrital grains and by decay of soft parts of organisms.
Źródło:: Geological Quarterly; 2015, 59, 4; 750--761
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Wykorzystanie wielowymiarowych metod statystycznych w geologicznej interpretacji profilowań geofizyki otworowej w mioceńskich utworach z rejonu złoża gazu Dzików w SE Polsce
Application of statistical methods to geological interpretation of well logs of the Miocene formation in the area of Dzików gas field in SE Poland
Autorzy:: Kaźmierczuk, M.
Powiązania:: https://bibliotekanauki.pl/articles/2074647.pdf
Data publikacji:: 2009
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: zapadlisko przedkarpackie
złoża gazu ziemnego
metody statystyczne
piaskowce dzikowskie
Carpathian Foredeep
gas deposits
statistical methods
Dzików sandstones
Opis:: The Miocene formation in the area of Dzików gas field is built of very thin sandy-shaly layers and thick sandstone layers so-called Dzików sandstones. Log data from wells: Dzików-12, Dzików-13 and Dzików-15 were processed with statistical methods. Principal Component Analysis was used for grouping and specifying well log data. It contributes to reducing the number of variables from a dozen of logs to four variables. Clustering, discrimination and classification are statistical tools facilitating data arrangement and preliminary data grouping according to natural petrophysical features of analysed rocks. Applied statistical methods are helpful tool assisting interpretation of log data.
Źródło:: Przegląd Geologiczny; 2009, 57, 11; 1004-1004
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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