Abstract The evolution of plate subduction styles on the Earth is coupled with its cooling history. Continuous subduction was initiated during the Neoarchean, yet its influence on mantle cooling and the cratonization of Archean lithosphere remains unclear. Successive subduction-related magmatism occurred during the late Neoarchean evolution of the Western Shandong Province granite-greenstone belt (WSP) of the North China Craton (NCC) and preserved crucial clues relating to processes and roles of regional continuous subduction. In this study, petrology, whole rock geochemistry, and zircon U–Pb–Hf isotopes are reported for late Neoarchean TTG gneisses, quartz monzodiorites, and monzogranites from the WSP. Zircon U–Pb dating reveals that the TTG gneisses, quartz monzodiorites, and monzogranites were formed at ~2561–2517 Ma, 2540–2533 Ma, and 2541–2513 Ma, respectively. The TTG gneisses with high (La/Yb)N ratios, low K2O/Na2O ratios, and low MgO contents were mainly derived from partial melting of oceanic slab material. In contrast, the quartz monzodiorites show high K2O and MgO content and high (La/Yb)N ratios, consistent with the characteristics of Archean sanukitoids, suggesting that they were the products of partial melting of mantle source metasomatized by slab-derived melts. The monzogranites with systematically high K2O, SiO2, and low MgO contents were formed by crustal reworking of regional TTGs and sedimentary rocks. Rock assemblages, geochemical features, regional field observation, and structure geology indicate prolonged (~2.56–2.49 Ga) continuous magmatism in the WSP across three northwest-trending belts (Belts A, B, and C) related to continuous subduction and slab rollback. These processes led to a tectonic transition from early compression to late extension. The final stabilization of the continental crust in the late Neoarchean in the eastern NCC was a consequence of successive mantle cooling due to regional continuous subduction recorded by subduction-related rock assemblages (i.e., adakites, sanukitoids, high-Mg basalts-andesites, and Nb-enriched basalts), the paired type of metamorphism, and the rise of alkali basalts. Secular geochemical changes of alkaline basalts outline the role of continuous subduction in dramatic mantle cooling and the final stabilization and cratonization of the eastern NCC.

中文翻译：

---

太古宙岩石圈连续俯冲的地幔冷却和克拉通化：来自华北克拉通东部的TTGs、sanukitoids和高K花岗岩的约束

摘要 地球板块俯冲类型的演变与其冷却历史有关。新太古代开始持续俯冲，但其对地幔冷却和太古代岩石圈克拉通化的影响仍不清楚。华北克拉通（NCC）山东省西部花岗岩-绿岩带（WSP）的新太古代晚期演化过程中发生了连续的俯冲相关岩浆活动，并保留了与区域连续俯冲过程和作用相关的关键线索。在这项研究中，报告了来自 WSP 的晚新太古代 TTG 片麻岩、石英二长闪长岩和二长花岗岩的岩石学、全岩地球化学和锆石 U-Pb-Hf 同位素。锆石 U-Pb 测年显示 TTG 片麻岩、石英二长闪长岩和二长花岗岩形成于~2561-2517 Ma、2540-2533 Ma，和 2541-2513 Ma，分别。具有高 (La/Yb)N 比、低 K2O/Na2O 比和低 MgO 含量的 TTG 片麻岩主要来源于大洋板坯材料的部分熔融。相比之下，石英二闪长岩显示出高 K2O 和 MgO 含量以及高 (La/Yb)N 比，与太古代 sanukitoids 的特征一致，表明它们是地幔源部分熔融的产物，由板片衍生的熔体交代。具有系统的高 K2O、SiO2 和低 MgO 含量的二长花岗岩是由区域 TTG 和沉积岩的地壳改造形成的。岩石组合、地球化学特征、区域野外观测和构造地质表明 WSP 中三个西北向带（带 A、B、和 C) 与连续俯冲和板坯回滚有关。这些过程导致了从早期压缩到晚期伸展的构造转变。NCC 东部新太古代晚期大陆地壳的最终稳定是由于与俯冲相关的岩石组合（即埃达克岩、sanukitoids、高镁玄武岩-安山岩和 Nb -富集玄武岩），成对类型的变质作用，以及碱性玄武岩的兴起。碱性玄武岩的长期地球化学变化概述了连续俯冲在剧烈地幔冷却和东部 NCC 最终稳定和克拉通化中的作用。NCC 东部新太古代晚期大陆地壳的最终稳定是由于与俯冲相关的岩石组合（即埃达克岩、sanukitoids、高镁玄武岩-安山岩和 Nb -富集玄武岩）、成对类型的变质作用和碱性玄武岩的兴起。碱性玄武岩的长期地球化学变化概述了连续俯冲在剧烈地幔冷却和东部 NCC 最终稳定和克拉通化中的作用。NCC 东部新太古代晚期大陆地壳的最终稳定是由于与俯冲相关的岩石组合（即埃达克岩、sanukitoids、高镁玄武岩-安山岩和 Nb -富集玄武岩）、成对类型的变质作用和碱性玄武岩的兴起。碱性玄武岩的长期地球化学变化概述了连续俯冲在剧烈地幔冷却和东部 NCC 最终稳定和克拉通化中的作用。以及碱性玄武岩的崛起。碱性玄武岩的长期地球化学变化概述了连续俯冲在剧烈地幔冷却和东部 NCC 最终稳定和克拉通化中的作用。以及碱性玄武岩的崛起。碱性玄武岩的长期地球化学变化概述了连续俯冲在剧烈地幔冷却和东部 NCC 最终稳定和克拉通化中的作用。