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Devonian palaeobiogeographic affinities of Afghanistan and surrounding areas (Iran, Pakistan)

机译:阿富汗及周边地区(巴基斯坦,伊朗)的泥盆纪古生物地理亲和力

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摘要

Palaeozoic (Devonian) outcrops in Afghanistan and neighbouring countries (Iran, Pakistan) are numerous but very sparsely distributed, and poorly known. The first interpretation, based on rare or poor data considered these North Gondwanan terranes as poorly connected and some authors have suggested the presence of large oceanic domains in palaeogeographical models. Increase in knowledge, especially of the distribution of main fossils groups, and also some lithological similarities, allow a review of the preliminary models and the identification of connections between the different terranes. For example the presence of Fistuliporid Bryozoan beds or rich Receptaculites levels in different sections of the three countries, especially in the Dasht-e Nawar and Central Iran areas, allows the preliminary models to be reviewed and the connections among the different terranes to be clarified. (C) 2015 Elsevier Ltd. All rights reserved.
机译:阿富汗及邻国(伊朗,巴基斯坦)的古生代(德文系)露头数量众多,但分布极为稀疏,鲜为人知。基于稀有或差数据的第一种解释认为这些北冈瓦纳山脉的地层连通性很差,一些作者建议在古地理模型中存在大洋域。知识的增加,尤其是主要化石群分布的知识,以及一些岩性的相似性,使人们可以回顾初步模型并确定不同地形之间的联系。例如,在这三个国家的不同地区,特别是在达什特-纳瓦尔地区和伊朗中部地区,存在菲氏梭状芽孢杆菌的床层或富水云母水平,可以审查初步模型并阐明不同地层之间的联系。 (C)2015 Elsevier Ltd.保留所有权利。

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