中文摘要：

都伦河东岩体位于西准噶尔达尔布特断裂西南端，岩性主要为石英闪长岩和花岗闪长岩，岩体内接触带有较强硅化、黄铁矿化等矿化特征显示。岩石富Ⅶ（Na2O）（3．63％～4．70％），贫硼（K2O）（0．56％～2．91％），Na2O／K2O比值为1．33～6．75，w（SiO2）多〉56％（54．57％～69．67％），w（Al2O3）多〉15％（14．53％～18．03％），w（MgO）多〈3％，个别高于6％，MgO值51．62～66．60，低Y〈18×10^-6（仅1样19．88×10^-6）和Yb〈1．9×10^-6（仅1样2．05×10^-6），Sr均〉400×10^-6（466×10^-6～1066×10^-6），Sr／Y均〉20（23．43～83．74）；富集LREE而亏损HREE，Eu多具正异常，少数弱负异常（8Eu=0．81～1．24），大离子亲石元素Rb，Ba，Sr和Th相对富集，高场强元素Nb，Ta，Ti，Zr相对亏损，因而显示典型的埃达克质岩属性，近同于包古图一带含矿小斑岩体地球化学特征，显示良好的与埃达克岩相关的找矿信息，为区域晚古生代埃达克质岩浆活动和Cu，Au成矿作用研究提供新佐证。

英文摘要：

Dulunhe granite in the southwest of Daerbute fault consists of the quartz diorite and granodiorite. The inner contact zone of the pluton shows strong silicification, pyrite and other mineralization. Major elements and trace elements analysis of the rocks indicate that the Dulunhe granite meets the conditions of adakitic rocks. These rocks have higher w（Na20） （3. 63% 4.70%） and lower w（K2O） （0.56%-2.92%）,Na2O/K2O=1. 33-6.75, w（SiO2）〉56% （54.57-69.67%）,w（Al2O3） 〉 15% （14. 53×- 18.03%）, w（MgO） 〈3%, Mg^# = 51.62 66.60. They are notably depleted in Y with Y〈18×10^-6 ,ranging from 10.78×10^-6 to 17.91 ×10^-6 , and Yb%1.9 ×10^-6 , ranging from 1.08×10^-6 to 1.89×10^-6, and enriched Sr〉400×10^-6 , ranging from 466×10^-6to 1 066×10^-6 , Sr/Y ratios vary from 23.43 to 83.74. The granitoid rocks are enriched in LREE and depleted in HREE,and exhibit positive Eu anomaly,part of them exhibit only weak negative Eu anomaly（gEu=0.81- 1.24）. Large ion lithophilous elements Rb, Ba, Sr and Th are relatively enriched and high field strength elements Nb, Ta, Ti, Zr are relatively depleted. On the δoasis of regional geological and magmatic evolution,it is considered that the Dulunhe granite belongs to typical adakitic rock,and is similar to small porphyry mineralization of the Baogutu region,which shows good prospecting information and provides new data for the research of adakitic magmatism and Cu,Au mineralization regularities of the Late Paleozoic.