Geochronology, geochemistry, and Hf–Sr-Nd isotopes of the Hamisana Shear Zone granitoids in northeastern Sudan: Petrogenesis and tectonic evolution of neoproterozoic juvenile crust in the Nubian Shield

2020 ◽  
Vol 347 ◽  
pp. 105857
Author(s):  
Adil Saeed ◽  
Zuoxun Zeng ◽  
Yildirim Dilek ◽  
S.F. Awadelseid ◽  
A.A. Abdel Rahman ◽  
...  
Keyword(s):  
Shear Zone ◽  
Tectonic Evolution ◽  
Nd Isotopes ◽  
Nubian Shield ◽  
Juvenile Crust

Vorticity analysis of the Palmi shear zone mylonites: new insights for the Alpine tectonic evolution of the Calabria-Peloritani terrane (southern Italy)

2015 ◽  
Vol 51 (4) ◽  
pp. 670-681 ◽  
Author(s):  
Vincenzo Festa ◽  
Giacomo Prosser ◽  
Alfredo Caggianelli ◽  
Antonietta Grande ◽  
Antonio Langone ◽  
...  
Keyword(s):  
Shear Zone ◽  
Tectonic Evolution ◽  
Southern Italy ◽  
Vorticity Analysis

scholarly journals Overview of Cordilleran oceanic terranes and their significance for the tectonic evolution of the northern Cordillera

2021 ◽  
Author(s):  
A Zagorevski ◽  
C R van Staal ◽  
J H Bédard ◽  
A Bogatu ◽  
D Canil ◽  
...  
Keyword(s):  
Continental Margin ◽  
Tectonic Evolution ◽  
Middle Triassic ◽  
Passive Margin ◽  
Suprasubduction Zone ◽  
Ophiolitic Rocks ◽  
Juvenile Crust ◽  
Tectonic Framework ◽  
Tectonic Reconstructions ◽  
Stratigraphic Nomenclature

Ophiolite complexes are an important component of oceanic terranes in the northern Cordillera and constitute a significant amount of juvenile crust added to the Mesozoic Laurentian continental margin during Cordilleran orogenesis. Despite their tectonic importance, few systematic studies of these complexes have been conducted. Detailed studies of the pseudostratigraphy, age, geochemistry, and structural setting of ophiolitic rocks in the northern Cordillera indicate that ophiolites formed in Permian to Middle Triassic suprasubduction zone settings and were obducted onto passive margin sequences. Re-evaluation of ophiolite complexes highlights fundamental gaps in the understanding of the tectonic framework of the northern Cordillera. The previous inclusion of ophiolite complexes into generic 'oceanic' terranes resulted in significant challenges for stratigraphic nomenclature, led to incorrect terrane definitions, and resulted in flawed tectonic reconstructions.

Origin of Neoproterozoic metamorphic suites along the Western Segment of Allaqi Shear Zone, Southern Egyptian Nubian Shield

2020 ◽  
Vol 13 (21) ◽  
Author(s):  
Abdelhamid El Fakharani ◽  
Abdelhady Radwan ◽  
Mohammed Hassan Younis ◽  
Ashraf Emam ◽  
Sherif Fawzy
Keyword(s):  
Shear Zone ◽  
Nubian Shield ◽  
Western Segment
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