Present-day stress fields of the Gulf of Suez (Egypt) based on exploratory well data: Non-uniform regional extension and its relation to inherited structures and local plate motion

Bosworth, William; Durocher, Scott

doi:10.1016/j.jafrearsci.2017.04.025

Cited by 30 publications

(13 citation statements)

References 55 publications

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“…The structural-tectonic framework of the southern Gulf of Suez (Figure 2(b)) was discussed recently by many authors (e.g. Patton et al 1994;Sharp et al 2000;Rohais et al 2016;Bosworth and Durocher 2017;Segev et al 2017;Temraz and Dypvik 2018).…”

Section: Geologic Settingmentioning

confidence: 79%

Structural setup of Gara Marine area as deduced from 3D seismic interpretation and gravity-magnetic modelling, Gulf of Suez, Egypt

Ghoneimi

Azab

El-Sawy

et al. 2020

NRIAG Journal of Astronomy and Geophysics

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An integrated interpretation utilising seismic data and inverse modelling is executed to morereveal the subsurface complexity in Gara Marine area. The shallow features are identified by doing the seismic analyses on tops of Miocene formations. The deeper structures are deduced through constructing two gravity-magnetic models constrained by seismic and well data. The seismic results indicate that upper-Miocene rocks are characterised by a thick salt section (~2Km), which rarely cut by faults. South Gharib exhibits a structural closure at the centre due to a salt dome with dipping limbs towards the east and west. Belayim and Kareem are thinner in thickness, uniform distribution and steeply dipping to the southwest. Rudeis seems thicker westward, deposited in the downthrown side of a master block-fault. The uncertainty in seismic interpretation due to Miocene salts is estimated on tops of different horizons (±70 m static). The models indicate that Pre-Miocene sediments were deposited on a rough basement surface, with southwest regional dip-regime. The basement is deformed by the cross-faults (NW and NE) which vanish within Miocene section, with no evidences support presence of magmatic materials. The dip-reversal along flanks of Miocene salt structure, and limbs of pre-Miocene uplift, are the most potential traps.

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Section: Geologic Settingmentioning

confidence: 79%

Structural setup of Gara Marine area as deduced from 3D seismic interpretation and gravity-magnetic modelling, Gulf of Suez, Egypt

Ghoneimi

Azab

El-Sawy

et al. 2020

NRIAG Journal of Astronomy and Geophysics

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“…5). The major force of the structural development in this area was the opening processes of the Red Sea, which started in the Miocene and continues today (Bosworth and Durocher 2017). The stratigraphy is divided into three major units, which are related to the evolution of the Red Sea/Gulf of Suez, i.e.…”

Section: Geology and Tectonicmentioning

confidence: 99%

Hydrochemistry and environmental isotopes of spring water and their relation to structure and lithology identified with remote sensing methods in Wadi Araba, Egypt

et al. 2021

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Springs located at the historical sites of Wadi Araba (Eastern Desert of Egypt) and emerging from the escarpments of the Northern and Southern Galala Plateaus were investigated. A combination of methods, including hydrochemistry, stable and radioisotope composition, and structural analyses based on satellite data, provided information about the structure of the subsurface and the derived groundwater flow paths. Satellite images reveal karst features within the northern plateau, e.g. conical landforms. Karstic caves were documented along both escarpments. Chemical analysis of floodwater from Wadi Araba indicates higher concentrations of terrestrial salts compared to floodwaters from central and southern parts of the desert. δ18O and δ2H signatures in spring waters resemble those of floodwater and fall on the global meteoric water line, confirming their fast infiltration with minor influence of evaporation. The aquifer feeding the springs of the Northern Galala Plateau has low retention and the springs dry out quickly, even after heavy rainfall. Contrastingly, 3H activities in springs emerging from the Southern Galala Plateau refer to much slower subsurface passage. With respect to 3H content (3.8 TU) in recent flood waters, the spring water at Southern Galala Plateau contains about 40% recently recharged groundwater. However, its largest spring—the St. Antony spring—discharges water with a radiocarbon age of about 15,000 years. In combination with this spring’s constant and high discharge over a period of several months, that age estimate suggests a large reservoir with moderate to high retention.

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“…Schlumberger 1984;McClay et al 1998;McClay 2001. Sharp et al 2001;Young et al 2002;Jackson 2008;Khalil and McClay 2008;Hewaidy et al 2016;Pietrantonio et al 2016;Rohais et al 2016;Bosworth and Durocher 2017;Segev et al 2017;Temraz and Dypvik 2018) indicated that the stratigraphic section of the GOS basin can be divided into three major units of different thicknesses, depositional environments, areal distributions, and hydrocarbon potentialities. The inside of the GOS consists of Miocene and Post-Miocene rocks while outside the depression, the high relief ridges are built of basement rocks in the southern portion, followed to the north by Palaeozoic-Cenozoic sediments (Figure 1(c)).…”

Section: Geologic Settingsmentioning

confidence: 99%

Source structures at Pre-Miocene level as deduced by gravity stripping

Azab

Soliman

2021

NRIAG Journal of Astronomy and Geophysics

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The lowermost portion of the sedimentary section in Gulf of Suez basin is mostly of low resolution and hardly interpret. This may be attributed to the bad seismic reflection that stops at a certain limit and fails to reach the deep settings, or due to non-coverage of boreholes. Herein, the gravity data was reinterpreted utilizing the stripping technique as an alternative tool to overcome the seismic failure. The process simply consists in calculating the gravity effects of the shallow rock-units and removing them from the Bouguer map, then in analyzing the remaining gravity. The ordinary seismic analysis was performed to control the geometry of the Miocene-Post Miocene formations, and density was driven from boreholes. Further analyses were done on the stripped map to obtain details about the deep sources. Generally, the study suggests a complex structure at Pre-Miocene level more than that of Miocene. It delineates two main troughs; Miocene basin to the east and Pre-Miocene basin (involves three sub-basins) to the west, separated by a structural ridge, all are northwesterly oriented. The basement is very disturbed by cross-faults, with no evidence support presence of igneous intrusions along. Two different forces (NW-SE compression and NE-SW tension) affected the region.

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Present-day stress fields of the Gulf of Suez (Egypt) based on exploratory well data: Non-uniform regional extension and its relation to inherited structures and local plate motion

Cited by 30 publications

References 55 publications

Structural setup of Gara Marine area as deduced from 3D seismic interpretation and gravity-magnetic modelling, Gulf of Suez, Egypt

Structural setup of Gara Marine area as deduced from 3D seismic interpretation and gravity-magnetic modelling, Gulf of Suez, Egypt

Hydrochemistry and environmental isotopes of spring water and their relation to structure and lithology identified with remote sensing methods in Wadi Araba, Egypt

Source structures at Pre-Miocene level as deduced by gravity stripping

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