A fore-arc setting of the Gerf ophiolite, Eastern Desert, Egypt: Evidence from mineral chemistry and geochemistry of ultramafites
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- 作者：Abdel-Aal M. Abdel-Karima ; Shehata Alib ; shehata.ali@mu.edu.eg" class="auth_mail" title="E-mail the corresponding author ; Hassan M. Helmyb ; Shymaa A. El-Shafeia
- 关键词：Neoproterozoic ; Mantle rocks ; Gerf ophiolite ; Boninitic magma ; Fore-arc
- 刊名：Lithos
- 出版年：2016
- 出版时间：15 October 2016
- 年：2016
- 卷：263
- 期：Complete
- 页码：52-65
- 全文大小：3125 K
文摘
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The Gerf ophiolite is the largest mantle-derived complex in the Arabian-Nubian Shield (ANS).
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The Gerf ophiolitic ultramafics comprise serpentinites, serpentinized peridotites and minor pyroxenites.
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They represent highly-depleted mantle residues after high degrees of melt extraction [high Cr# (> 0.84)].
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Gerf ophiolite suite developed in fore-arc setting in a supra-subduction zone (SSZ) environment.