Cambrian-early Ordovician volcanism across the South Armorican and Occitan domains of the Variscan Belt in France: Continental break-up and rifting of the northern Gondwana margin

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• 作者：André ; Pouclet^a ; ^{andre.pouclet@sfr.fr} ; J. Javier Á ; lvaro^b ; ^{jj.alvaro@csic.es} ; Jacques-Marie Bardintzeff^c ; ^{jacques-marie.bardintzeff@u-psud.fr} ; André ; s Gil Imaz^d ; ^{agil@unizar.es} ; Eric Monceret^e ; ^{eric.monceret@orange.fr} ; Daniel Vizcaï ; no^f ; ^{daniel.vizcaino@wanadoo.fr}
• 关键词：Gondwana margin ; Cambro&ndash ; Ordovician volcanic activity ; Continental tholeiite ; Rheic Ocean ; Middle-European Ocean ; Palaeotethys Ocean
• 刊名：Geoscience Frontiers
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：8
• 期：1
• 页码：25-64
• 全文大小：10751 K
• 卷排序：8

文摘

Lower Palaeozoic teactonostratigraphy of western pre-Variscan basins is documented. Magmatic fingerprints of Cambrian and lower Ordovician volcanism are determined. The timing of volcanic activities is established. Their tectono-magmatic significances define North Gondwana geodynamical patterns. A Tremadocian volcanic chain emplaced from Occitan to Central-Iberian zones.