Infracambrian superimposed tectonics in the Late Proterozoic units of Mount Ablah area, southern Asir Terrane, Arabian Shield, Saudi Arabia

Bamousa, Abdullah O.

doi:10.1007/s12517-011-0490-5

Cited by 20 publications

(10 citation statements)

References 15 publications

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“…The repetition of curved symmetric layers of U and S geometry gives the impression of fold geometry [46] that are well-defined by the analysed OLI data ( Figure 5). The folds are first order (F1) folds [47], highlighted by bedding or marker horizon along the rolling strike [46]. As shown by the DEM data ( Figure 5(b)) they are trending mainly N-S, NNE-SSW and NE.…”

Section: Resultsmentioning

confidence: 97%

“…The use of band ratio 6/7, 4/2, and 6/5*4/5 of OLI, allowed the discrimination of the hard rocks in blue and soil in green. Particular band ratios are perceived to define the composition of the rock units [17,47]. Utilization of the band ratios of 6/7, 4/2, and 6/5*4/5 in R, G, and B of the Landsat OLI, allowed the delineation of areas of clay mineral and vegetation marked by red (Figure 8(a)).…”

Section: Resultsmentioning

confidence: 99%

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Multispectral and RADAR images integration for geologic, geomorphic, and structural investigation in southwestern Arabian Shield, Al Qunfudhah area, Saudi Arabia

Abdelkareem

Bamousa

Hamimi

et al. 2020

Journal of Taibah University for Science

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In this article, Western Saudi Arabia underwent remote sensing investigation via Operational Land Imager (OLI), Advanced Land Observing Satellite/ Phased Array type L-band Synthetic Aperture Radar (ALOS/PALSAR), Sentinal-1 and Shuttle Radar Topography Mission (SRTM). Imagetransformation and enhancement techniques such as Band ratios, principal component analysis (PCA), and Minimum Noise Fraction (MNF) were utilized. Applying Sentinel-1 and SRTM DEMs enhanced the perspective views of the terrain. The main results are highlighting of geologic rock units, geomorphic and structural features, and extraction and visualization of dominant lineaments. N-S foliations that are associated with folds N-S tight, isoclinal, and asymmetric (F1), NW-SE trending Najd system strike-slip faults and NNE-SSW, NE-SW NW-SE, and E-W Cenozoic faults are the major identified structural lineaments, which were analyzed and synthesized via rose diagrams. Visible Near Infra-Red/Short Wave Infra-Red (VNIR/SWIR) radar data are very important data set for water resources applications.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Multispectral and RADAR images integration for geologic, geomorphic, and structural investigation in southwestern Arabian Shield, Al Qunfudhah area, Saudi Arabia

Abdelkareem

Bamousa

Hamimi

et al. 2020

Journal of Taibah University for Science

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“…The Furayh Group rocks consists of rhyolite tuff and marbleized carbonates (similar to rocks of Ablah Group), which are affected by F 2 folding [8]. The intersection between S 1 and S 2 surfaces has produced pencil-like linear structures that plunge gently towards north.…”

Section: Development Of F 2 Foldingmentioning

confidence: 99%

“…Although, the Neoproterozoic (900 -550 Ma) Arabian Shield is considered as a juvenile shield [1], it underwent several phases of subduction, amalgamation and postamalgamation tectonic events, which resulted in to a reworked complex continental lithosphere of the heterogeneous terranes [2][3][4][5][6][7][8]. Amalgamation of these terranes formed the Arabian Shield by accretion and juxtaposition of the oceanic slivers.…”

Section: Introductionmentioning

confidence: 99%

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Complex Tectonic History of Al-Yutamah Dome Area within Hijaz Terrane, Arabian Shield, South of Al Madinah, Saudi Arabia

Bamousa¹

2013

TOGEOJ

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This paper documents the Al-Yutamah tectonic dome, located in the northwestern part of the Arabian Shield, Saudi Arabia. A new Infracambrian over-thrust fault zone is mapped, which superpose the Late Proterozoic rocks in the area. Kinematic indicators suggest top-to-the-south movements along this fault, mainly compressional and some extensional in nature. The area experienced several tectonic events that resulted in to a complex dome like structure formation with a surface area of 20 50 km 2 . The S 1 cleavages, which have been determined as the oldest structural features in the area, are attributed to (D 1 ) tectonic event along the Labunah Thrust Fault. This event was followed by another deformational event (D 2 ) that produced N-S trending F 2 folds in the area. The third deformational event (D 3 ) observed in the area is the brittle high-angle reverse faults, which generally dip toward north and south, suggesting compressional nature of the event. Fourth deformational event (D 4 ) in the area resulted in the formation of E-W trending F 4 folding, which occurred subsequent to the development of Najd Strike-slip Faulting and F 2 folding. Superposition of the F 2 and F 4 folds in the area developed a complex structural feature in the shape of Al-Yutamah dome. Overthrusting of the meta-sedimentary rocks as a result of movement along the Al-Yutamah fault is considered as a fifth tectonic event (D 5 ). The Al-Yutamah over-thrust fault is most likely late Infracambrian in age, which is associated with the Najd Strikeslip Fault zone. The Cenozoic listric faulting that probably exhumed the dome is considered as a sixth deformational event (D 6 ) in the area. During the Cenozoic, cross-cut faults developed in the dome by high-angle normal faulting that dissected it into different segments.

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Najd Shear System in the Arabian-Nubian Shield

Hamimi

Fowler

2021

The Geology of the Arabian-Nubian Shield

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Infracambrian superimposed tectonics in the Late Proterozoic units of Mount Ablah area, southern Asir Terrane, Arabian Shield, Saudi Arabia

Cited by 20 publications

References 15 publications

Multispectral and RADAR images integration for geologic, geomorphic, and structural investigation in southwestern Arabian Shield, Al Qunfudhah area, Saudi Arabia

Multispectral and RADAR images integration for geologic, geomorphic, and structural investigation in southwestern Arabian Shield, Al Qunfudhah area, Saudi Arabia

Complex Tectonic History of Al-Yutamah Dome Area within Hijaz Terrane, Arabian Shield, South of Al Madinah, Saudi Arabia

Najd Shear System in the Arabian-Nubian Shield

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