- Tytuł:
-
Warunki temperaturowe w czasie diagenezy piaskowców pensylwanu w rejonie Morza Bałtyckiego
Thermal conditions during diagenesis of Pennsylvanian sandstones in the Baltic Sea area - Autorzy:
- Kozłowska, Aleksandra
- Powiązania:
- https://bibliotekanauki.pl/articles/2075972.pdf
- Data publikacji:
- 2019
- Wydawca:
- Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
- Tematy:
-
temperatura
minerały autogeniczne
diageneza
piaskowiec
Pensylwania
Bałtyk
temperature
autigenic minerals
diagenesis
sandstone
Pennsylvanian
Baltic Sea - Opis:
- The purpose of this study is to reconstruct the temperature conditions in the sediment during the diagenesis history of Pennsylvanian sandstones drilled in three deep boreholes in the Baltic Sea. These sandstones are represented by quartz and sublithic arenites and wackes, cemented by matrix and autigenic minerals. Among the autigenic minerals: quartz, clay minerals (kaolinite, dickite, illite) and carbonates (calcite, dolomite, ankerite) are the temperature indicators. The presence of dickite in the sediments indicates a temperature of about 120°C. Quartz and carbonate crystallization temperatures, based on the analysis of fluid inclusions, are estimated to be in the range of 70-180°C. The K/Ar age of the fibrous illite thatforms at the final stage of diagenesis (above 100° C), was determined at 262 ±2 to 247 ±4 My, i.e. from the Middle Permian to the Early Triassic. It determines a length of the post-deposition period, when the deposits were permeable for pore fluids.
- Źródło:
-
Przegląd Geologiczny; 2019, 67; 167--168
0033-2151 - Pojawia się w:
- Przegląd Geologiczny
- Dostawca treści:
- Biblioteka Nauki
Artykuł