Subduction initiation for the formation of high-Cr chromitites in the Kop ophiolite, NE Turkey
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- 作者：Peng-Fei Zhanga ; Ibrahim Uysalb ; uysal.ibrahim@gmail.com" class="auth_mail" title="E-mail the corresponding author ; iuysal@ktu.edu.tr" class="auth_mail" title="E-mail the corresponding author ; Mei-Fu Zhoua ; Ben-Xun Suc ; Erdi Avcıb
- 关键词：Kop ophiolite ; High-Cr chromitite ; Proto-forearc ; Depleted mantle ; Asthenosphere upwelling ; Metasomatism
- 刊名：Lithos
- 出版年：2016
- 出版时间：1 September 2016
- 年：2016
- 卷：260
- 期：Complete
- 页码：345-355
- 全文大小：2286 K
文摘
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The parental magmas of some high-Cr chromitites were from LREE-depleted mantle without notable subduction modification.
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Pyroxenite veins in the Kop ophiolite were generated in the context of lithosphere-asthenosphere interaction.
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High-temperature fluid activities caused the concave REE patterns of dunites and low-Al clinopyroxenes in them.
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The first batches of high-Cr chromitites possibly formed between the early and late stages of proto-forearc spreading.