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Thermal History of the Lithosphere of the Koltogor–Urengoi Graben, West Siberian Basin, in the Area of SG-6 Well: Numerical Reconstruction Using GALO Flat Basin Modeling Systemстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 апреля 2024 г.
- Автор: Galushkin Yu I.
- Журнал: Izvestiya. Physics of the Solid Earth
- Том: 59
- Номер: 4
- Год издания: 2023
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 604
- Последняя страница: 621
- DOI: 10.1134/S1069351323040055
- Аннотация: Abstract—The GALO basin modeling system is used to numerically reconstruct the thermal regime of the lithosphere of the West Siberian basin in the Koltogor-Urengoi graben in the vicinity of the Tyumen SG-6 superdeep well. The reconstruction explains the features in the formation of the thermal regime of the basin, which were not considered in the previous reconstructions of the region. These features include anomalously high growth of organic matter maturity in the Jurassic and Triassic rocks, high temperature gradients observed in the upper basement and in the Triassic–Permian sedimentary complex, the anomalously low temperatures of rocks in the upper layers of the modern sedimentary section of the basin. The time variations in the tectonic subsidence of the basin are analyzed to estimate the intensity and duration of the events of thermal activation and stretching of the lithosphere of the basin. The thermal influence of the sill that intruded into the upper horizons of the basement in the Lower Jurassic explained the high degree of maturation of the organics in the Lower Triassic rocks. Taking into account sharp climate fluctuations in the Pliocene–Quaternary together with hydrothermal activity in the bottom part of the sedimentary cover in the Upper Pliocene–Lower Pleistocene, we obtained the deep profiles of temperatures and vitrinite reflectance, which are consistent with the measured values.Keywords: SG-6 well, basin modeling, tectonic subsidence, hydrothermal activity, permafrost
- Добавил в систему: Галушкин Юрий Иванович