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

被引：59
作者：
Alvaro, J. Javier [1 ]
Bellido, Felix [2 ]
Gasquet, Dominique [3 ]
Pereira, M. Francisco [4 ]
Quesada, Cecilio [2 ]
Sanchez-Garcia, Teresa [2 ]
机构：
[1] CSIC, INTA, Ctr Astrobiol, Torrejon De Ardoz 28850, Spain
[2] IGME, Madrid 28003, Spain
[3] Univ Savoie, CNRS, EDYTEM, UMR 5204, F-73376 Le Bourget Du Lac, France
[4] Univ Evora, ECT, IDL, Dept Geociencias, P-7001554 Evora, Portugal
来源：
JOURNAL OF AFRICAN EARTH SCIENCES | 2014年 / 98卷
关键词：
Cadomian and Pan-African belts; Anti-Atlas; Volcanic geochemistry; Ediacaran-Cambrian paleogeography; WESTERN ANTI-ATLAS; PALEOZOIC TECTONIC EVOLUTION; DETRITAL ZIRCON DATA; U-PB GEOCHRONOLOGY; GEODYNAMIC EVOLUTION; BOHEMIAN MASSIF; PASSIVE MARGIN; AFRICAN CRATON; RHEIC OCEAN; CARBONATE PRODUCTIVITY;
D O I：
10.1016/j.jafrearsci.2014.03.024
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
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. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：113 / 132
页数：20
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