Sedimentation and inversion history of three molasse basins of the western Central Eastern Desert of Egypt: Implications for the tectonic significance of Hammamat basins

Fowler, Abdel-Rahman; Osman, A.F.

doi:10.1016/j.gr.2012.08.022

Cited by 42 publications

(21 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Representative stratigraphic columns for terrestrial Ediacaran successions in the Arabian-Nubian Shield. Zeidun basin after [66]; Gebel Urf succession after [67]; Thalbah group after [68]. See Figures 1 and 18 for locations of these basins.…”

Section: Ediacaran Basinsmentioning

confidence: 99%

“…Detrital zircons yield a U-Pb SHRIMP maximum depositional age of about 585 Ma for the base of the Hammamat succession in the Gebel Um Tawat area, northern Eastern Desert, Egypt, [72], although it is inferred that the group in general was deposited between about 615 to 585 Ma [66,72,73]. Both Hammamat and Dokhan units were affected by rapid hinterland uplift at about 595-588 Ma [74,75].…”

Section: Terrestrial Basinsmentioning

confidence: 99%

“…The Hammamat Group is commonly referred to as molasse [66,72], and was deposited in fluvial systems of continental proportions [72] or in isolated basins [76,77]. The Hammamat basins are variously classified as foreland basins, in the case of the type Hammamat basin [74], intramontane basins in the cases of the Kareim, Quieh, and Igla basins [78], a strike-slip pull-apart basin, in the case of the El Mayah basin [79], and fault-bounded basins [66,77].…”

Section: Terrestrial Basinsmentioning

confidence: 99%

“…The Hammamat basins are variously classified as foreland basins, in the case of the type Hammamat basin [74], intramontane basins in the cases of the Kareim, Quieh, and Igla basins [78], a strike-slip pull-apart basin, in the case of the El Mayah basin [79], and fault-bounded basins [66,77]. The range of inferred structural controls include thrusting, normal faulting, strike-slip faulting, N-S to NW-SE extension, and magmatic doming.…”

Section: Terrestrial Basinsmentioning

confidence: 99%

“…The El Mayah basin [79] was initiated as a half-graben and later evolved into a pull-apart basin at a prominent bend in a sinistral shear system of the Najd fault. The Zeidun basin [66] was initiated by subsidence controlled by marginal normal faults during an episode of N-S regional extension in the northwestern ANS. Basin subsidence and sediment delivery rates were linked with exhumation of adjacent core complexes.…”

Section: Terrestrial Basinsmentioning

confidence: 99%

See 4 more Smart Citations

Volcanosedimentary Basins in the Arabian-Nubian Shield: Markers of Repeated Exhumation and Denudation in a Neoproterozoic Accretionary Orogen

et al. 2013

View full text Add to dashboard Cite

The Arabian-Nubian Shield (ANS) includes Middle Cryogenian-Ediacaran (790–560 Ma) sedimentary and volcanic terrestrial and shallow-marine successions unconformable on juvenile Cryogenian crust. The oldest were deposited after 780–760 Ma shearing and suturing in the central ANS. Middle Cryogenian basins are associated with ~700 Ma suturing in the northern ANS. Late Cryogenian basins overlapped with and followed 680–640 Ma Nabitah orogenesis in the eastern ANS. Ediacaran successions are found in pull-apart and other types of basins formed in a transpressive setting associated with E-W shortening, NW-trending shearing, and northerly extension during final amalgamation of the ANS. Erosion surfaces truncating metamorphosed arc rocks at the base of these successions are evidence of periodic exhumation and erosion of the evolving ANS crust. The basins are evidence of subsequent subsidence to the base level of alluvial systems or below sea level. Mountains were dissected by valley systems, yet relief was locally low enough to allow for seaways connected to the surrounding Mozambique Ocean. The volcanosedimentary basins of the ANS are excellently exposed and preserved, and form a world-class natural laboratory for testing concepts about crustal growth during the Neoproterozoic and for the acquisition of data to calibrate chemical and isotopic changes, at a time in geologic history that included some of the most important, rapid, and enigmatic changes to Earth’s environment and biota

show abstract

Section: Ediacaran Basinsmentioning

confidence: 99%

Section: Terrestrial Basinsmentioning

confidence: 99%

Section: Terrestrial Basinsmentioning

confidence: 99%

Section: Terrestrial Basinsmentioning

confidence: 99%

Section: Terrestrial Basinsmentioning

confidence: 99%

See 3 more Smart Citations

Volcanosedimentary Basins in the Arabian-Nubian Shield: Markers of Repeated Exhumation and Denudation in a Neoproterozoic Accretionary Orogen

et al. 2013

View full text Add to dashboard Cite

show abstract

Egyptian Hammamat molasse basins and their relations to arc collision stages: Implications for radioactive elements mineralization potential

2018

View full text Add to dashboard Cite

Our understanding of the formation style and tectonic setting of Hammamat molasse sedimentary rocks (HMSR) as well as their chronological situation in the legend of the geologic maps is as yet deficient. The purpose of the work is to decipher the misinterpretation of the HMSR genesis. As such, we present a new classification for HMSR that provides answers about its significant field relationships with the mature island arc volcanics that obviously explains the changes in the depositional environments of HMSR, tectonic setting in addition to the shape and type of their constituents. In the light of our suggested thematic evolution model, the HMSR have been deposited in 3 different tectonic settings: (a) fore‐arc, intra‐arc, and back‐arc basins during pre‐collision stage; (b) fore‐arc basins and low land basins in accretionary prism during syn‐collision stage; and (c) low land and intramontane basins during late‐collision stage. The characteristics of HMSR in each stage differ according to the shape and type of basin and the source of sediments supplying. Thus, they show different types and sizes of clasts, mineralization, and radioactivity. The low radioactive potentiality of HMSR is entirely related to their composition, nature, and source of sediments. Generally, any radioactive anomalies are not related to HMSR themselves, but to the surrounding U‐rich rocks and/or the hydrothermal and super‐heated solutions. Siltstones of HMSR with their recognizable low permeability could be a good barrier for solutions carrying uranium and probably form visible uranium mineralization. Spots of visible uranium mineralization are scattered at the contact between HMSR and late‐collision granites within the southern periphery of Um Tawat Basin and at the contact between trachytes and HMSR within Wadi El Kareim Basin; the extension of this mineralization does not exceed more than few centimetres away from the contact.

show abstract

Precambrian Basement Complex of Egypt

El-Bialy

2019

Regional Geology Reviews

View full text Add to dashboard Cite

Sedimentation and inversion history of three molasse basins of the western Central Eastern Desert of Egypt: Implications for the tectonic significance of Hammamat basins

Cited by 42 publications

References 65 publications

Volcanosedimentary Basins in the Arabian-Nubian Shield: Markers of Repeated Exhumation and Denudation in a Neoproterozoic Accretionary Orogen

Volcanosedimentary Basins in the Arabian-Nubian Shield: Markers of Repeated Exhumation and Denudation in a Neoproterozoic Accretionary Orogen

Egyptian Hammamat molasse basins and their relations to arc collision stages: Implications for radioactive elements mineralization potential

Precambrian Basement Complex of Egypt

Contact Info

Product

Resources

About