Microstructural analyses of the Najd Fault System in Midyan Terrane, NW Arabian Shield, Saudi Arabia

El-Fakharani, Abdelhamid; AlKashghari, Wadee A.; Baggazi, Haitham M.; El-Shafei, Mohamed K.; Matsah, Mohamed

doi:10.1007/s00531-019-01803-w

Cited by 7 publications

(2 citation statements)

References 53 publications

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“…The four terranes Al Amar, Bir Umq, Nabitah Yanbu sutures are distinguished by ophiolite‐bearing suture zones (Stoesser & Camp, 1984), while Afif and Ar Rayn terranes in the east show continental affinities. But the other three terranes (Midyan, Asir and Hijaz) on the western side are ensimatic island arc terranes (El‐Fakharani et al, 2020). The contacts between these terranes formed the major deformational belts and suture zones which marked by the presence of ophiolites.…”

Section: Discussionmentioning

confidence: 99%

“…The Arabian Shield is divided into five geologically different terranes (Stoesser & Camp, 1984) by four ophiolite‐bearing suture zones (Figures 3 and 4) that include Al Amar, Bir Umq, Nabitah, and Yanbu sutures. Two island arc terranes with continental affinities in the east (Afif and ArRayn terranes), whereas the other three terranes (Midyan, Asir and Hijaz) on the western side are ensimatic island arc terranes (El‐Fakharani et al, 2020; Kassem, 2015a, 2015b). Abd‐Allah et al (2014) introduced the Fatima suture zone along the border between the Jiddah terrane and the Asir terrane (Figures 3 and 4).…”

Section: Deformational Belts Associated With Suturesmentioning

confidence: 99%

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Structural and tectonic evolution of suture‐related belts and post‐accretionary systems in the Arabian‐Nubian Shield

El‐Wahed

Attia

2023

Geological Journal

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Deforming belts in the Arabian‐Nubian Shield (ANS) are classified into (1) suture‐related belts, including arc–arc and arc‐continental, and (2) post‐accretionary systems, including N‐trending compression zones and NW‐trending strike‐slip faults. Terrane accretion took place in the ANS between 800 and 700 Ma, along arc–arc sutures. Such sutures are directed from E to NE in the northern part of the ANS, and from N to NE in the south, and are aligned in the north and east with N‐ or S‐verging ophiolitic nappes, or in the south with W‐verging nappes. The Asir, Hijaz, and Midyan terranes formed the Western Arabian shield by 715 Ma. The Afif terrane collided with the Hijaz and Asir terranes between 680 and 640 Ma, terminating the subduction along the Nabitah suture. Subduction began west of the Al Amar arc near the margin of the Ar Rayn terrane at 670 Ma. Afif and Ar Rayn terranes collided along the Al Amar‐Idsas suture about 640 Ma, producing the Idsas orogeny that initiated the major faulting and folding. Strike‐slip faults and upright folds related to oblique convergence between terranes and/or post‐accretionary systems deform the southern sutures. The eastern and western boundaries of the ANS are marked by arc‐continental sutures and characterized by N‐trending deformation belts that formed at 750–650 Ma when the ANS collided with East and West Gondwana.

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Section: Discussionmentioning

confidence: 99%