Sedimentary and structural evolution of the northwest Arabian Red Sea margin

Bayer, Hans; Hötzl, H.; Jado, Abdul Raof; Roscher, Bernd; Voggenreiter, W.

doi:10.1016/0040-1951(88)90011-x

Cited by 114 publications

(40 citation statements)

References 26 publications

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“…Micropaleontological studies of exploratory wells and some outcrops have suggested that the oldest syn-rift formations, exclusive of the very southern Red Sea, are ϳ23 Ma, near the Oligocene-Miocene boundary (Bunter and Abdel Magid 1989;Hughes and Beydoun 1992;McClay et al 1998;Bosworth et al 1998;Hughes et al 1999). Other interpretations have placed the base syn-rift unconformity within the Late Oligocene (Dullo et al 1983;Bayer et al 1988;Purser and Hötzl 1988;El Barkooky and El-Araby 1999;Bosworth and McClay 2001;Jackson et al 2006;Jackson 2008), or even Early Oligocene (Hughes and Filatoff 1995;Koeshidayatullah et al 2016).…”

Section: Late Oligocene -Early Miocene Structuration and Syn-rift Depmentioning

confidence: 99%

Early magmatism in the greater Red Sea rift: timing and significance

Bosworth¹,

Stöckli

2016

Can. J. Earth Sci.

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Throughout the greater Red Sea rift system the initial late Cenozoic syn-rift strata and extensional faulting are closely associated with alkali basaltic volcanism. Older stratigraphic units are either pre-rift or deposited during pre-rupture mechanical weakening of the lithosphere. The East African superplume appeared in northeast Africa ϳ46 Ma but was not accompanied by any significant extensional faulting. Continental rifting began in the eastern and central Gulf of Aden at ϳ31-30 Ma coeval with the onset of continental flood volcanism in northern Ethiopia, Eritrea, and western Yemen. Volcanism appeared soon after at Derudeb in southern Sudan and at Harrats Hadan and As Sirat in Saudi Arabia. From ϳ26.5 to 25 Ma a new phase of volcanism began with the intrusion of a dike field reaching southeast of Afar into the Ogaden. At 24-23 Ma dikes were emplaced nearly simultaneously north of Afar and reached over 2000 km into northern Egypt. The dike event linked Afar to the smaller Cairo mini-plume and corresponds to initiation of lithospheric extension and rupture in the central and northern Red Sea and Gulf of Suez. By ϳ21 Ma the dike intrusions along the entire length of the Red Sea were completed. Each episodic enlargement of the greater Red Sea rift system was triggered and facilitated by breakthrough of mantle-derived plumes. However, the absence of any volumetrically significant rift-related volcanism during the main phase of Miocene central and northern Red Sea -Gulf of Suez rifting supports the interpretation that plate-boundary forces likely drove overall separation of Arabia from Africa.Résumé : Dans l'ensemble du grand système du rift de la mer Rouge, les strates initiales syn-rifting et l'extension par failles d'âge cénozoïque tardif sont étroitement associées à un volcanisme basaltique alcalin. Les unités stratigraphiques plus anciennes précèdent la formation du rift ou ont été déposées durant l'affaiblissement mécanique de la lithosphère qui a précédé la rupture. Le superpanache est-africain est apparu dans le nord-est de l'Afrique à ϳ46 Ma, mais n'était pas accompagné d'une importante déformation par failles. Le rifting continental a commencé dans l'est et le centre du golfe d'Aden à ϳ31-30 Ma, en même temps que le début du volcanisme continental de plateau dans le nord de l'Éthiopie, en Érythrée et dans l'ouest du Yémen. Le volcanisme est apparu peu après à Derudeb, dans le sud du Soudan, et aux Harrats Hadan et As Sirat, en Arabie saoudite. À partir de ϳ26,5-25 Ma, une nouvelle phase de volcanisme a débuté avec l'intrusion d'un essaim de dykes allant du sud-est d'Afar jusque dans l'Ogaden. À 24-23 Ma, des dykes ont été mis en place presque simultanément au nord d'Afar et s'étalant sur plus de 2000 km jusque dans le nord de l'Égypte. L'intrusion de dykes a relié Afar au mini-panache plus petit du Caire et correspond au début de la distension et de la rupture lithosphériques dans le centre et le nord de la mer Rouge et le golfe de Suez. À ϳ21 Ma, l'intrusion de dykes sur toute la longueur de ...

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Section: Late Oligocene -Early Miocene Structuration and Syn-rift Depmentioning

confidence: 99%

Early magmatism in the greater Red Sea rift: timing and significance

Bosworth¹,

Stöckli

2016

Can. J. Earth Sci.

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“…The tectonic pattern of the subject region is inherited from the basement tectonics of the ancient Nubian-Arabian shield, that received its main structural imprint during Late Pre-Cambrian orogenic phases (Bayer et al, 1988;Montenat et al, 1988).…”

Section: S T R U C T U R a L A N D T E C T O N I C S E T T I N Gmentioning

confidence: 99%

Seismotectonic regionalization of the Red Sea area and its application to seismic risk analysis

1992

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A seismological evaluation of the Red Sea margin is presented in this contribution based on the concept of seismotectonic regionalization. The geology and the tectonic structure are critically reviewed to define regions of homogeneous seismicity in the study area, and available seismicity data are implemented to estimate the seismic parameters of the region. The results of the study are applied to evaluate the seismic hazard of an offshore platform site.

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“…The Owen Transform Fault has an age of 8 Ma and a rate of dextral lateral motion of 2 mm/a [16]. The Dead Sea Transform Fault has an age of 14 Ma [17,18] with 100-105 km of displacement motion [19].…”

Section: Regional Tectonic Frameworkmentioning

confidence: 99%

“…[20] and white arrow from Oman [21]. a - [22]; b - [19]; c - [17]; d - [18]; e - [13]; f - [14]; g - [8]; h - [15]; i - [16]. Map modified from [23].…”

Section: Age and Type Of Post-obduction Deformationmentioning

confidence: 99%

Kinematics of Post-obduction Deformation of the Tertiary Ridge at Al-Khod Village (Muscat, Oman)

Scharf

Mattern

Al-Sadi

2016

SQU Journal for Science

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Structural investigations in post-obductional Paleocene to Eocene limestones of the Tertiary Ridge reveal a ~1 km long WNW-ESE striking strike-slip fault system within the ridge, consisting of two main sub-parallel, strike-slip faults. Considering the geometry of the Harding Strain Ellipse, the orientation of structures between the two strike-slip faults (e.g., Riedel shears, folds, reverse faults) point to left-lateral motion. The abundance of large-scale folds (up to 100 m in wave length and amplitude) between the two strike-slip faults led us to the interpretation of transpressive conditions in a first approximation. Moreover, the Tertiary Ridge of the study area consists of three distinct structural domains. The faults of Domain A and C are oriented WNW-ESE, but the trend of the faults in the central Domain B differs by ~10°. The left-lateral strike-slip fault system exists only in Domain B. We propose that the direction of greatest stress during Miocene plate convergence (sigma 1) was oriented 032°/212°. Considering the trend of the strike-slip zone and the orientation of sigma 1, the left-lateral motion must have been transpressive. Sigma 1 is perpendicularly oriented to the domains A and C.Prior to the Miocene D2 compressional event the study area was affected by a D1 extensional event, related to the opening of the Red Sea and the Gulf of Aden or to gravity-driven normal faulting. The D2 compressional/transpressional structures of the Miocene are reactivating the D1 structures of the Oligocene.

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Sedimentary and structural evolution of the northwest Arabian Red Sea margin

Cited by 114 publications

References 26 publications

Early magmatism in the greater Red Sea rift: timing and significance

Early magmatism in the greater Red Sea rift: timing and significance

Seismotectonic regionalization of the Red Sea area and its application to seismic risk analysis

Kinematics of Post-obduction Deformation of the Tertiary Ridge at Al-Khod Village (Muscat, Oman)

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