Insights on the tectonic styles of the Red Sea rift using gravity and magnetic data

Saada, Saada Ahmed; Mickus, Kevin L.; Eldosouky, Ahmed M.; Ibrahim, Amin

doi:10.1016/j.marpetgeo.2021.105253

Cited by 32 publications

(12 citation statements)

References 52 publications

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“…(2021) (Figure 10), we suggest that the limited oceanic crust option is more realistic for the northern Red Sea. Although segmentation trails were inferred from the vertical gravity gradient data to support an extended oceanic crust distribution in this area (Augustin et al., 2021), previous gravity interpretations are also in disagreement regarding such lithospheric setting (e.g., Almalki et al., 2016; Saada et al., 2021; Saleh et al., 2006).…”

Section: Discussionmentioning

confidence: 90%

Lithospheric Structure of the Red Sea Based on 3D Density Modeling: A Contrasting Rift Architecture

2023

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The lithospheric structure of successful rifts can shed light regarding the breakup process and the controlling factors of the architecture of conjugate margins. Studying ancient rifts is difficult because the prolonged geological history could overprint the spatial and temporal relations to geodynamic features, especially the activity of nearby plumes. Thus, to examine the breakup process and the influence of the proximity of mantle plumes on the rift architecture, a young and active case study is desired. The Red Sea offers a unique opportunity due to its young age and its close proximity to the Afar plume (Figure 1). Evidence for rifting are found along the Red Sea ∼8 Myr after the massive deposition of the Ethiopian-Yemen traps, during the Early Oligocene (Bosworth et al., 2005;Stockli & Bosworth, 2018).Even though many factors influence the modes of crustal thinning, numerical simulations showed that the rheology of the crust has a major influence on the final architecture of the rifted margins and may lead to the formation of contrasting end-member types of rifted margins (

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Section: Discussionmentioning

confidence: 90%

Lithospheric Structure of the Red Sea Based on 3D Density Modeling: A Contrasting Rift Architecture

2023

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“…The Gulf of Aden and the Red Sea reveal another situation, where the heat flow pattern is related to their tectonic nature of being modern examples of young rifted margins. Both of them were formed by the Cenozoic break-up of Arabia and Africa (Manighetti et al, 1997;Stockli and Bosworth, 2019;Saada et al, 2021). The Gulf of Aden opened earlier and experienced two stages of extension, diffuse extension in a rift valley environment without an organized spreading center and then concentrated extension along a single axis (true seafloor spreading) (Cochran, 1981), Thus the main trough is underlain by oceanic crust (Fairhead, 1973).…”

Section: Heat Flow and Tectonics In Asiamentioning

confidence: 99%

“…As for the Red Sea, it is suggested that the southern Red Sea Rift is located where the seafloor spreading occurs and forms oceanic crust. The central part is thus a transition zone mainly consisting of disconnected oceanic crust, while the northern portion is within the last stage of the rift-related magmatic intrusion or the first stage of seafloor spreading (Saada et al, 2021). Although different parts of the spreading rift are within different evolution stages, there is no doubt that the region of Red Sea rift is undergoing vigorous magmatism.…”

Section: Heat Flow and Tectonics In Asiamentioning

confidence: 99%

Heat Flow in the Asian Continent and Surrounding Areas

Zhu

Liu

Huang

2022

ijthfa

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Heat flow is a key parameter to describe the interior heat of the Earth and provides constraints on understanding the thermal structure of lithosphere and assessment of the geothermal resource potential. Based on the latest heat flow database, here we present the heat flow pattern of the Asian continent and its surrounding areas and discuss the correlation between heat flow and tectonics. The mean heat flow of Asian continent and its surrounding areas is 71 ± 34 mW/m2, slightly higher than the global continental mean value, and the overall heat flow pattern in Asia exhibits remarkable heterogeneity, characterized by higher values in the eastern marginal seas, the Red Sea, the Gulf of Aden and the Qinghai-Tibet Plateau, while lower in large areas of North Asia and Central Asia. Cratons show a lower mean heat flow and smaller standard deviation, indicating the tectonic stability. The Cenozoic rifts, marginal seas and the Neo-Tethyan Tectonic Domain all exhibit higher heat flow. The geothermal pattern in Asia is controlled by the geodynamic processes of the subduction of Pacific Plate, the Indo-Asia continental collision and the break-up between Arabia and Africa.

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“…Ref. [40] analyzed the geological structure of the Red Sea region through the use of gravity and magnetic data. Ref.…”

Section: Introductionmentioning

confidence: 99%

Research on the Tectonic Characteristics and Hydrocarbon Prospects in the Northern Area of the South Yellow Sea Based on Gravity and Magnetic Data

Yao

et al. 2023

Minerals

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To further explore the geological structure and the Mesozoic–Paleozoic hydrocarbon prospects in the northern area of the South Yellow Sea (SYS), multiple geological and geophysical data were systematically gathered and compiled, including gravity and magnetic data, seismic surveys, drilling data, and previous research results. The characteristics and genesis of the gravity and magnetic anomalies are examined. This study employs residual gravity anomalies and multiple edge detection methods to identify fault lineament structures and assess the tectonic framework. Moreover, the study utilizes 2.5D gravity-seismic joint modellings and regression analysis to estimate the basement depth. Additionally, the study examines the basement characteristics and discusses the thickness of the Mesozoic–Paleozoic strata. Finally, the study further identifies prospects for hydrocarbons in the Mesozoic–Paleozoic. Our findings show that the faults are incredibly abundant and that the intensity of fault activity weakens gradually from NW to SE. Specifically, NE (NEE) trending faults are interlaced and cut off by NW (NWW), near-EW, and near-SN trending secondary faults, which form an en-echelon composite faults system with a dominant NE (NEE) orientation. Thick Mesozoic–Paleozoic strata are preserved, but we observe distinct variations in basement characteristics and the pre-Cenozoic structural deformation along the N-S direction. Therefore, the Northern Basin of SYS (NBSYS) and the Middle Uplift of SYS (MUSYS) are characterized by alternating sags and bulges in the S-N direction and in the E-W direction, respectively, forming a chessboard tectonic framework. Considering the oil and gas accumulation model, we identify three target hydrocarbon prospects in the NBSYS and two favorable hydrocarbon prospects in the MUSYS.

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Insights on the tectonic styles of the Red Sea rift using gravity and magnetic data

Cited by 32 publications

References 52 publications

Lithospheric Structure of the Red Sea Based on 3D Density Modeling: A Contrasting Rift Architecture

Lithospheric Structure of the Red Sea Based on 3D Density Modeling: A Contrasting Rift Architecture

Heat Flow in the Asian Continent and Surrounding Areas

Research on the Tectonic Characteristics and Hydrocarbon Prospects in the Northern Area of the South Yellow Sea Based on Gravity and Magnetic Data

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