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An analysis of variations in tectonic subsidence of the basin and construction of alternative models of thermal evolution of sedimentary basinsстатья
- Автор: Galushkin Yu I.
- Журнал: Izvestiya. Physics of the Solid Earth
- Том: 61
- Номер: 1
- Год издания: 2025
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 29
- Последняя страница: 44
- DOI: 10.1134/S1069351325700028
- Аннотация: Numerical reconstructions of thermal history of the sedimentary cover in the region of the DoradoNorth well in the Mannar basin (Sri Lanka) and of the sedimentary blanket of the Ostaninskaya-438 well inthe West Siberia Basin (Russia, Tomsk region), which were presented in (Premarathne et al., 2016; Isaev etal., 2021) are compared to the corresponding reconstructions for these areas using the GALO system for basinmodeling. These examples show that using basin modeling systems with a given heat flow at the base of thesedimentary cover can produce an unrealistic thermal history of the basin, despite the fact that the calculatedvitrinite reflectance matches the measured ones. The analysis of variations in basin tectonic subsidenceincorporated in the GALO basin modeling system allows for an assessment of the amplitude and duration ofthermal activation or stretching (crustal thinning) of the basin lithosphere. This approach avoids the challengeof setting the heat flow at relatively shallow basin depths. The constrained alternative model of basinthermal evolution, constructed in this way, is based on the same initial modeling database that is used in thebasin modeling system with given heat flow at the base of sedimentary blanket; the only difference is the additionof the present Moho depth.
- Добавил в систему: Галушкин Юрий Иванович