Subduction initiation of Neo-Tethyan Ocean recorded by the Mirdita Ophiolite, Albania: Implications for the earliest stage of mantle-melt evolution

Here, we present new data on the mineral chemistry, whole-rock trace element, and platinum group element (PGE) geochemistry from the upper mantle peridotites (basal lherzolite, harzburgite, and dunite) and associated disseminated chromitite (high-Al type) in the Gomsiqe massif in the western Mirdita zone in northern Albanides. We will systematically discuss their petrogenesis and melt evolution to reveal the subduction initiation signature recorded in them.本文报道了北阿尔巴尼德造山带米尔迪塔西部带戈姆西克地块内，上地幔橄榄岩（基底二辉橄榄岩、方辉橄榄岩及纯橄榄岩）及其伴生的浸染状高铝型铬铁矿的矿物化学、全岩微量元素与铂族元素（PGE）地球化学新数据。本文将系统探讨其岩石成因与熔体演化过程，以揭示其中所记录的俯冲起始特征。