中文摘要：

对出露于豫西西峡县北部二郎坪地区的满子营花岗岩体进行了详细的岩石学、地球化学及锆石U-Pb年代学研究，重点讨论了该岩体的成因。满子营花岗岩主要由石英（40%～50%）、钾长石（25%～30%）和斜长石（15%～20%）组成，副矿物有锆石、磷灰石、磁铁矿等。地球化学分析显示，岩石总体呈高硅、富碱、高钾、高铝和低镁、低钙的特征，K2O/Na2O〉1，里特曼指数σ为1.81～2.39，属高钾钙碱性系列。岩石的铝饱和指数（A/CNK）大于1.1，具有过铝质S型花岗岩的特征。稀土配分模式为右倾“V”字形态，轻重稀土分馏明显，（La/Yb）N=4.63～32.27，具有较强的负铕异常（δEu=0.38～0.63）；在洋脊花岗岩标准化蛛网图上，岩石明显富集Rb、Th、K等大离子亲石元素（LILE），亏损Nb、Ta等高场强元素（HFSE），兼具同碰撞和岛弧花岗岩的特征。锆石的LA-ICP-MS原位定年获得花岗岩的结晶年龄为459.5±0.9 Ma。根据满子营花岗岩与二郎坪火山岩时、空分布的一致性和岩体性质上的相似性，认为满子营花岗岩的形成与二郎坪岛弧火山岩的形成有关，是由板块俯冲所导致的活动陆缘上陆壳物质部分熔融的产物。

英文摘要：

The Manziying granite is located in Erlangping area, northern Xixia County, western Henan Province. This paper has studied petrographical, geochemical and zircon U-Pb chronolgical characteristics of this granite as well as its petrogenesis and geological significance. The Manziying granite mainly consists of quartz （40%～50%）, orthoclase （25%～30%）, plagioclase （15%～20%） with minor accessory minerals of zircon, apatite and magnetite. Geochemical analyses show that the Manziying granite has high content of SiO2 （75.01%～77.44%）, Al2O3（12.15%～13.35%）, K2O （3.81%～5.06%） and total alkali （K2O＋Na2O=6.81%～9.34%）, but relatively low MgO （0.10%～0.35%） and CaO （0.18%～0.85%）. The ratios of K2O/Na2O are generally higher than 1. The Rittmann indexes are between 1.81 and 2.39, belonging to the high-K calc-alkaline series. The values of A/CNK vary from 0.99 to 1.16 with an average of 1.10, showing characteristics of peraluminous S-type granites. Trace element analyses show that the Manziying granite has relatively high REE content of 121.9×10-6～289.5×10-6, and displays right-inclined V-shape REE patterns with relatively high fractionations of LREE and HREE [（La/Yb）N=4.63～32.27）] and pronounced negative Eu anomalies （δEu=0.38～0.63） in the chondrite-normalized REE diagrams, suggesting a typical crust-derived granite. The concentration of Nb （6.6×10^-6～11.5×10^-6） and Ta （0.5×10^-6～1.2×10^-6） and the ratios of Nb/Ta （7.2～10.0） in the Manziying granite are very similar to those of crustal rocks and the typical continent-continent syn-collisional granite, also suggesting that the Manziying granite was derived from the melt of crustal rocks. The Manziying granite is rich in LILEs of K, Rb, Th and Ba, poor in HFSEs of Nb and Ta. The distinct depletion of Nb and Ta together with the depletion of Ba and enrichment of Ce relative to their neighbor elements in the ocean ridge granite-normalized trace element diagram indicate that the Manziying g