Genesis of late Pan-African dike rocks from northern Arabian-Nubian Shield Academic Article uri icon

abstract

  • The Arabian-Nubian Shield (ANS) and the Central Asian Orogenic Belt (CAOB) have much in common with regard to their crust evolution. ANS is a large Neoproterozoic accretionary orogen at the northern end of the East African Orogen. ANS underwent the main stage of crustal accretion in the period of ca. 900 to 530 Ma (= Pan-African event), whereas CAOB took place later from ca. 600 to 100 Ma. Both orogenic belts are composed of a variety of terranes, including continental-margin and intra-oceanic arcs, ophiolite complexes, granitic batholiths and some Precambrian continental fragments. However, the most renowned feature is the massive generation of juvenile crust in the respective periods of Neoproterozoic for ANS and Phanerozoic for CAOB. In southern Israel (northern part of ANS), late Pan-African dike swarm of basic to acid compositions were emplaced in …

publication date

  • January 1, 2006