地质学报2026，Vol.100Issue(6)：1943-1974,32.DOI:10.19762/j.cnki.dizhixuebao.2025026
土耳其蛇绿岩地幔橄榄岩研究进展和展望
Research progress and prospect of the peridotite in the Turkish ophiolites
摘要
Abstract
Ophiolites in Turkey are distributed across several tectonic units,such as the Northern Anatolian Belt,the Tauride Ophiolite Belt,and the Southern Ophiolite Belt.These ophiolites represent remnants of the Tethyan oceanic lithosphere,reflecting a complex history of plate tectonic evolution.The mantle peridotites in these ophiolites are predominantly harzburgites,with minor occurrences of dunites and lherzolites,and have generally undergone varying degrees of serpentinization.The whole-rock and mineralogical characteristics of these mantle peridotites preserve important information related to their origin and the tectonic setting in which they formed.The mantle peridotites in Turkey ophiolites exhibit significant variations in rare earth element(REE)and trace element distributions.For instance,lherzolites display a left-leaning REE pattern with light REE depletion,while harzburgites and dunites show"U"-or"V"-shaped REE patterns,suggesting metasomatic alteration by melts enriched in light REEs derived from a subduction zone.Chromitite research is a crucial aspect of studies on Turkey ophiolites,particularly the distribution and genesis of podiform chromitites,which offer valuable insights for chromitite exploration in China.Studies indicate that chromitite formation is influenced by a combination of partial melting of the mantle source,melt-rock interaction,and late-stage fractional crystallization of magma,with contributions from deep mantle materials.The mantle-crust transition zone and the upper part of the mantle in supra-subduction zone settings are identified as critical areas for chromitite formation.Moderately depleted peridotites,especially harzburgites associated with dunites,are important exploration indicators,while large-scale dunites of boninitic affinities provide favorable spatial conditions for chromitite enrichment.Additionally,the preservation and exposure of ore-bearing bodies,closely tied to the degree of erosion,are crucial factors to consider during exploration.In conclusion,the study of Turkish ophiolites not only deepens the understanding of mantle dynamics and plate tectonics but also provides scientific guidance for chromitite exploration.By integrating the petrological and geochemical characteristics of mantle peridotites,focusing on favorable metallogenic tectonic settings,large-scale dunite regions,and moderately eroded ore-bearing bodies,future chromitite exploration efforts are expected to achieve greater efficiency and yield more significant results.关键词
土耳其/蛇绿岩/地幔橄榄岩/豆荚状铬铁矿/铬铁矿找矿Key words
Turkey/ophiolite/mantle peridotite/podiform chromitite/chromitite prospecting引用本文复制引用
陈博浩,连东洋,蔡鹏捷,薄容众..土耳其蛇绿岩地幔橄榄岩研究进展和展望[J].地质学报,2026,100(6):1943-1974,32.基金项目
本文为国家重点研发计划项目(编号2023YFF0804402)、国家自然科学基金项目(编号42330306,42272068,42302080)、江苏省卓越博士后计划项目(编号2022ZB12)、中央高校基本业务费项目(编号2024300422,2023300168)和地质过程与矿产资源国家重点实验室科技部专项经费资助项目(编号GPMR202435)联合资助的成果. （编号2023YFF0804402）
