Diachronism in the late Neoproterozoic-Cambrian arc-rift transition of North Gondwana: A comparison of Morocco and the Iberian Ossa-Morena Zone

作者：Alvaro J Javier^*; Bellido Felix; Gasquet Dominique; Pereira M Francisco; Quesada Cecilio; Sanchez Garcia Teresa

来源：Journal of African Earth Sciences, 2014, 98: 113-132.

DOI：10.1016/j.jafrearsci.2014.03.024

• Cadomian and Pan-African belts
• Anti-Atlas
• Volcanic geochemistry
• Ediacaran-Cambrian paleogeography

In the northwestern border of the West African craton (North Gondwana), a transition from late Neoproterozoic subduction/collision to Cambrian rift processes was recorded in the Anti-Atlas (Morocco) and in the Ossa-Morena Zone (Iberia). Cambrian rifting affected both Pan-African and Cadomian basements in a stepwise and diachronous way. Subsequently, both areas evolved into a syn-rift margin episodically punctuated by uplift and tilting that precluded Furongian sedimentation. A comparison of sedimentary, volcanic and geodynamic evolution is made in the late Neoproterozoic (Pan-African and Cadomian) belts and Cambrian rifts trying to solve the apparent diachronous (SW-NE-trending) propagation of an early Palaeozoic rifting regime that finally led to the opening of the Rheic Ocean.

• 出版日期2014-10