An attempt has been made to illustrate the evolution of pelitic granulite from south of the Balaram-Abu road, which lies in the South Delhi Terrane (SDT) of the Aravalli-Delhi Mobile Belt (ADMB), using geochemistry and geochronology. The current work offers a plausible explanation for the protolith of pelitic granulite, nature of the sediments and its provenance. The elemental geochemistry of the pelitic granulites reveals that the protolith is an arkosic to shaley type. The rare earth elements pattern shows that there is a negative Eu anomaly and a small excess of LREE over HREE. This means that the source of sediments probably has the same elements as the upper crust. However, the amounts of Sr, Nd and Pb vary a lot, which shows that the sediments supplied from two different types of sources (felsic and mafic) in different proportions from a Proterozoic terrain. The monazite geochronology indicates that the metamorphic overprint occurred between 797 Ma and 906 Ma. Additionally, the ages correlate to the debris that was formed between the 1188 Ma and 1324 Ma from magmatic/sedimentary sources for pelitic granulite. The present research provides a more in-depth understanding of the evolutionary history of the pelitic granulite that comprises the SDT in the ADMB region during the Proterozoic era.

我们试图利用地球化学和地质年代学来说明巴拉拉姆-阿布公路以南的泥质麻粒岩的演化过程，该公路位于阿拉瓦利-德里移动带 (ADMB) 的南德里地体 (SDT)。目前的工作为泥质麻粒岩的原岩、沉积物的性质及其来源提供了合理的解释。泥质麻粒岩的元素地球化学表明，原岩为长石质至页岩类型。稀土元素模式显示，存在负 Eu 异常，且 LREE 略高于 HREE。这意味着沉积物的来源可能与上地壳具有相同的元素。然而，Sr、Nd和Pb的含量变化很大，这表明沉积物由两种不同类型的来源（长英质和镁铁质）以不同的比例来自元古代地形。独居石年代学表明变质叠印发生在797 Ma至906 Ma之间。此外，年龄与 1188 Ma 和 1324 Ma 之间由泥质麻粒岩的岩浆/沉积源形成的碎片相关。目前的研究为元古代 ADMB 地区构成 SDT 的泥质麻粒岩的演化历史提供了更深入的了解。