Geochemistry and tectonostratigraphy of the basal allochthonous units of SW Iberia (Évora Massif, Portugal): Keys to the reconstruction of pre-Pangean paleogeography in southern Europe

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• 作者：Rubé ; n Dí ; ez Ferná ; ndez^a ; ^b ; ^{rudiez@ucm.es} ; José ; Manuel Fuenlabrada^c ; ^{jmfuenla@pdi.ucm.es} ; Martim Chichorro^d ; ^{ma.chichorro@fct.unl.pt} ; M. Francisco Pereira^b ; ^{mpereira@uevora.pt} ; Sonia Sá ; nchez-Martí ; nez^a ; ^{s.sanchez@geo.ucm.es} ; José ; B. Silva^e ; ^{jbsilva@fc.ul.pt} ; Ricardo Arenas^a ; ^{arenas@geo.ucm.es}
• 关键词：Whole-rock geochemistry ; Sm&ndash ; Nd systematics ; Allochthonous terranes ; Gondwana ; Suture zone ; Variscan orogen
• 刊名：Lithos
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：268-271
• 期：Complete
• 页码：285-301
• 全文大小：5639 K
• 卷排序：268

文摘

Multi-proxy analysis of SW and NW Iberian allochthons reveals strong similarities. Ediacaran rocks of the basal allochthon represent a single continental margin. Sm–Nd data from metasedimentary rocks suggest provenance from the W African Craton. Deposition took place in a peri-Gondwanan arc system. The tectonostratigraphy of the Évora Massif (SW Iberia) is redefined.