The granites and granite gneisses from a tectono-metamorphic complex exposed along the Shyok Valley in the Karakoram region, India, forms the southern margin of Asian plate in the India-Asia collision zone. These rocks have been subjected to mineralogical, geochemical, and U-Pb zircon geochronological investigations to constrain the petrogenetic and geodynamic evolution of the Karakoram terrane. Outcrop-scale observations reveal the presence of pre- and syn-kinematic leucogranite bodies intruded within the granites and granite gneisses. The foliation-parallel deformed leucogranite sill shows the dextral shear sense in an extensive metamorphic complex that is in concordance with the Karakoram Fault (KF) in the Ladakh region, NW India. Whole-rock elemental and biotite chemistry equivocally suggest subduction-related metaluminous (I-type) calc-alkaline nature for most of the host granites and gneisses, and generation of syn-collisional peraluminous (S-type) leucogranites through crustal anatexis of pre-existing rocks. The obtained U-Pb zircon ages for the granites, granite gneisses, deformed and undeformed leucogranites vary widely from ca. 160 Ma to 15 Ma and reveal: (a) the initiation of subduction of the Neo-Tethyan oceanic crust beneath the southern Asian Plate at least ~160 Ma ago, and (b) existence of continuous or intermittent deformation along ~1000 km long lithospheric scale dextral KF during ~27−15 Ma.

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印度喀喇昆仑东南部花岗岩和花岗岩片麻岩的岩石学、地球化学和地质年代学：喀喇昆仑断裂带俯冲相关和同运动岩浆作用的记录

印度喀喇昆仑地区肖克河谷出露的构造-变质杂岩体中的花岗岩和花岗岩片麻岩形成了印亚碰撞带的亚洲板块南缘。这些岩石已经进行了矿物学、地球化学和 U-Pb 锆石年代学调查，以限制喀喇昆仑地体的岩石成因和地球动力学演化。露头尺度观察揭示了侵入花岗岩和花岗岩片麻岩内的前运动和同运动白花岗岩体的存在。叶理平行变形的白质花岗岩窗台在与印度西北部拉达克地区的喀喇昆仑断层 (KF) 一致的广泛变质复合物中显示出右旋剪切感。全岩元素和黑云母化学模棱两可地表明大多数寄主花岗岩和片麻岩具有与俯冲相关的金属铝质（I 型）钙碱性性质，并且通过前地壳的地壳钝化作用产生同碰撞过铝质（S 型）白花岗岩。现有的岩石。获得的花岗岩、花岗片麻岩、变形和未变形的白质花岗岩的 U-Pb 锆石年龄在 160 Ma 到 15 Ma 之间变化很大，揭示了：(a) 亚洲板块下方新特提斯洋壳开始俯冲至少约 160 Ma 之前，以及（b）在约 27-15 Ma 期间沿约 1000 公里长的岩石圈尺度右旋 KF 存在连续或间歇变形。