摩洛哥Alboran地区内裂谷带始新世或渐新世砾岩的早二叠世花岗岩卵石:起源假说

IF 2.6 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY Bulletin de la Societe Geologique de France Pub Date : 2018-05-01 DOI:10.1051/BSGF/2018012

P. Olivier, J. Paquette

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引用次数: 2

摘要

用锆石U/Pb测定了281 Ma的花岗岩砾石年龄，它们来自于裂谷带(摩洛哥Alboran地区)内带古马里推覆上的始新世或渐新世砾岩。在裂谷带和邻近的贝提克山脉均未发现花岗岩体，本文讨论了这些早二叠世末期钙碱性昆古里花岗岩的成因。可能是附近一群溺死在阿尔伯兰海的人。与其他环地中海构造域的对比表明，这一晚深部构造活动是瓦立斯坎造山带的一个原始构造域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Early Permian age of granite pebbles from an Eocene or Oligocene conglomerate of the Internal Rif belt (Alboran domain, Morocco): hypothesis on their origin

Granite pebbles from an Eocene or Oligocene conglomerate lying on a Ghomaride nappe of the Internal Zones of the Rif belt (Alboran domain, Morocco) have been dated by U/Pb on zircon at 281 Ma. No granite pluton being known in the Rif belt nor in the neighbouring Betic Cordillera, the origin of these calc-alkaline Kungurian (end of the Early Permian) granites is discussed. A provenance from a nearby unit presently drowned in the Alboran sea is likely. Comparisons with other circum-Mediterranean domains show that this late plutonism characterizes an original domain in the Variscan orogen.

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来源期刊

Bulletin de la Societe Geologique de France 地学-地球科学综合

CiteScore

5.80

自引率

0.00%

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审稿时长

>12 weeks

期刊介绍： BSGF - Earth Sciences Bulletin publie plusieurs types de contributions : 1. des articles originaux, couvrant tous les champs disciplinaires des Géosciences, à vocation fondamentale mais également à vocation plus appliquée (risques, ressources); 2. des articles de synthèse, faisant le point sur les avancées dans un domaine spécifique des Géosciences, qu''elles soient méthodologiques ou régionales ; 3. des monographies sur la géologie d’une région donnée, assorties d’informations supplémentaires, cartes, coupes, logs, profils sismiques … publiées en ligne en annexe de l’article ; 4. des articles courts de type « express letter » ; 5. des livrets-guides d’excursion (qui suivront le même processus d’examen éditorial que les articles plus classiques) ; 6. des comptes rendus de campagnes à la mer ; 7. des articles de données géodésiques, géophysiques ou géochimiques, pouvant devenir des articles de référence pouvant conduire à des interprétations ultérieures. BSGF - Earth Sciences Bulletin constitue également un forum pour les discussions entre spécialistes des Sciences de la Terre, de type comment-reply ou autre. Tous les articles publiés, quelle que soit leur forme, seront accessibles sans frais (articles en Open Access) sur le site de la SGF et sur celui de Geosciences World dans la mesure où les auteurs se seront acquittés d’une contribution de (Article Processing Charges – APC) de 300€ pour les membres de la SGF et 500€ pour les non-membres.