Radiogenic (Sr-Nd-Hf-Os) isotope data for neogene volcanic rocks from the rif–betic orogen and lanzarote (Canary Islands) in the western Mediterranean

Results in Geochemistry Pub Date : 2021-10-01 DOI:10.1016/j.ringeo.2021.100013

S. Turner , B. Schaefer , M. Pankhurst , K. Waterman (née Cheeseman) , G. Dobosi , G. Jenner

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Abstract

In this communication we present new radiogenic Sr-Nd-Hf-Os isotope data for Neogene volcanic rocks from the Rif-Betic Orogen and Lanzarote Island in the western Mediterranean along with some previously published data. Major and trace element data for the Rif samples are provided as a data supplement. Geological context and petrographic details for equivalent rocks have been published previously but the new data, especially the Hf and Os isotope data should be of use for future appraisals of the distribution of sub-crustal mantle domains in the region. Upon inspection, it would appear that alkali basalts, shoshonites and lamproites sample very different sub-continental lithospheric mantle sources in Spain and Morocco whereas there are close similarities between Lanzarote basalts and mantle xenoliths from the Atlas Mountains in Morocco.

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西地中海裂谷-玻色造山带和兰萨罗特岛(加那利群岛)新近系火山岩放射性成因(Sr-Nd-Hf-Os)同位素资料

在本文中，我们介绍了西地中海Rif-Betic造山带和兰萨罗特岛新近纪火山岩的放射性成因Sr-Nd-Hf-Os同位素新数据以及一些先前发表的数据。Rif样品的主要和微量元素数据作为数据补充提供。以前已经发表了等效岩石的地质背景和岩石学细节，但新的数据，特别是Hf和Os同位素数据应用于未来评价该地区地壳下地幔域的分布。经检查，西班牙和摩洛哥的碱玄武岩、索松岩和煌斑岩样品的次大陆岩石圈地幔来源似乎非常不同，而兰萨罗特岛的玄武岩与摩洛哥阿特拉斯山脉的地幔包体有密切的相似之处。

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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Results in Geochemistry

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