In this contribution we present field relations, U-Pb zircon geochronology, in-situ Lu-Hf isotopes, bulk-rock Sm-Nd isotopes and geochemistry of the tonalite-trondhjemite-granodiorite (TTG) gneiss, sanukitoid and anatectic granites from the Central Bundelkhand granite-greenstone terrane (CBGGT). The present study provides a comprehensive insight into the crust-mantle evolution, reworking, and cratonization of the Bundelkhand Craton (BC) during the Archean Eon. We report two discrete episodes of Neoarchean TTG magmatism at ~ 2.71 and ~ 2.68 Ga from the BC for the first time. Additionally, we identify a TTG gneiss that is significantly older (~3.34 Ga) than thus far assumed in the eastern part of the area. Furthermore, zircon U-Pb ages of the sanukitoids and the anatectic granites suggest synchronous emplacement at 2.58–2.50 Ga. Zircon of Paleoarchean TTG, Neoarchean TTG, sanukitoid, and anatectic granites show εHf_(t) values in the following ranges: +1.7 to −0.9, +4.1 to −10.7, −3.6 to −6.2, and −5.9 to −7.8, respectively, which are indicative of significant crustal reworking. Neoarchean TTG gneiss shows εNd_(t) and εHf_(t) value of + 4.5 and + 10.0 to −6.8, respectively, indicating a juvenile crustal source and probably formed by the partial melting of deep-seated mafic crust in the garnet stability field. Neoarchean TTGs formed in arc creation/collision to the Paleoarchean nucleus of the BC. The amalgamation of diverse micro-blocks occurred by the arc-continent collision and probable breakoff of the descending slab between crustal blocks of the BC during Neoarchean. This event generated anatectic granites by intense partial melting of the existing crust, which resulted as closing of subduction and marked as final stabilization and cratonization of the BC. This event also shows evidence that the BC did not amalgamate until ~2.50 Ga.

在这项贡献中，我们介绍了现场关系，U-Pb锆石年代学，原位Lu-Hf同位素，块状岩石Sm-Nd同位素以及来自中邦德坎德邦花岗岩-绿岩地层（CBGGT）的斜长石-斜方晶锰矿-闪长闪长岩（TTG）片麻岩，sanukitoid和无铅花岗岩的地球化学。本研究提供了在太古代Eon期间Bundelkhand Craton（BC）的地幔幔演化，返修和克拉通化的全面见解。我们首次报告了来自卑诗省的两个新世代TTG岩浆离散事件，分别位于〜2.71和〜2.68 Ga。此外，我们发现TTG片麻岩比该区域东部迄今所假定的要早得多（〜3.34 Ga）。此外，sanukitoids和食盐花岗岩的锆石U-Pb年龄表明在2.58–2.50 Ga处有同步放位。古古宙TTG，新古宙TTG，sanukitoid和南洋花岗岩的锆石显示εHf_（t）值在以下范围内：分别表示+1.7至-0.9，+ 4.1至-10.7，-3.6至-6.2和-5.9至-7.8。新陈代谢的TTG片麻岩显示εNd _（t）和εHf _（t）值分别为+ 4.5和+ 10.0至-6.8，表明是一个幼年地壳源，可能是由石榴石稳定性场中的深铁基镁铁壳的部分熔融形成的。新旧时代的TTG在与BC的古旧时代的核形成/碰撞时形成。新弧时代，由于弧大陆碰撞和BC地壳块之间的降平板断裂而发生的各种微块的合并。该事件是由于现存地壳的强烈部分融化而产生的，这是由于俯冲作用的关闭和标志着卑诗省的最终稳定化和克拉通化而产生的南极花岗岩。该事件还显示出直到约2.50 Ga BC才合并的证据。