Статья

Exploratory Mapping of the Geothermal Anomalies in the Neoproterozoic Arabian Shield, Saudi Arabia, Using Magnetic Data

Kamal AbdelrahmanDepartment of Geology and Geophysics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaStephen E. EkwokApplied Geophysics Programme, Department of Physics, University of Calabar, Calabar PMB 1115, Cross River State, NigeriaChristian A. UlemApplied Geophysics Programme, Department of Physics, University of Calabar, Calabar PMB 1115, Cross River State, NigeriaAhmed M. EldosoukyGeology Department, Faculty of Science, Suez University, Suez 43518, EgyptNaif Al-OtaibiDepartment of Geology and Geophysics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaBashar Y. HazaeaDepartment of Geology and Geophysics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaSaddam Ali HazaeaDepartment of Geology and Geophysics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaPeter AndrášFaculty of Natural Sciences, Matej Bel University in Banska Bystrica, Tajovského 40, 974 01 Banska Bystrica, SlovakiaAnthony E. AkpanApplied Geophysics Programme, Department of Physics, University of Calabar, Calabar PMB 1115, Cross River State, Nigeria

2023en

ABI

Аннотация

In this paper, certain areas of the Kingdom of Saudi Arabia (KSA) are assessed in order to map potential geothermal energy zones. To evaluate high-resolution aerial magnetic data, spectral depth analysis using a modified centroid approach was used. The calculated geothermal parameters were gridded in order to delineate the regions characterised by a shallow Curie point depth (CPD) and a high geothermal gradient (GG) as well as a high heat flow (HF). The CPD, GG and HF calculated from the analysed data varied in the ranges of 6.0–15.0 km, 40.0–100.0 °C/km and 90.0–270.0 mW/m2, respectively. The obtained results show the concurrence of the positions of shallow CPD (<8.0 km), high GG (>83.5 °C/km) and high HF (>211.0 mW/m2). The geothermal systems that are oriented in the E–W direction are related to the Red Sea tectonics, the tectonic opening of the Red Sea/Gulf of the Suez Rift, hot subterranean anomalies and high enthalpy from radioactive granites. Likewise, the geologic structures (fractures and faults) related to the Red Sea tectonics serve as channels for the movement of hydrothermal fluids and the deposition of associated minerals. All in all, another geophysical study involving deep boreholes, and seismic, magnetotelluric, electromagnetic and geochemical data should be conducted to evaluate and estimate precisely the economic reserves of geothermal resources.

Перевод пока недоступен

Идентификаторы

DOI: 10.3390/min13050694

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar