研究区位于黑龙江省东北部,行政区划属伊春市管辖。岩石主要岩性为细中粒似斑状二长花岗岩,结构不均匀,呈似斑状结构,块状构造,岩石由斑晶和基质组成。SIO2含量在66.38%-73.48%,为酸性岩类。AL2O3含量在13.24%-15.99%,显示为富铝。稀土元素总量∑REE为128.99-165.51×10-6,铕负异常—弱的负异常。稀土配分曲线为右倾型曲线(图2)。大离子亲石元素BA、K、RB、SR含量高,高场强元素TI、P、TH含量较高。属于高钾钙碱性花岗岩,为I型花岗岩。该花岗岩形成时代为197±1MAMA,早侏罗世,形成于同碰撞期和碰撞后的抬升期环境,可能与西伯利亚板块和华北板块碰撞对接后的伸展作用有关 The research area is located in the northeast of Heilongjiang Province, and the administrative division is under the jurisdiction of Yichun City. The main lithology of rocks is fine-grained macular plagioclase monzogranite with irregular structure, macular pattern and massive structure. The rock is composed of plaque and matrix. SIO2 content of 66.38% -73.48%, acidic rocks. AL2O3 content of 13.24% -15.99%, showed a rich aluminum. The total amount of rare earth elements ΣREE is 128.99-165.51 × 10-6, negative anomalies of europium - weak negative anomaly. Rare earth distribution curve for the right-inclined curve (Figure 2). Large ion lithophile elements BA, K, RB, SR content is high, high field strength elements TI, P, TH content higher. Belongs to high-K calc-alkaline granite, I-type granite. The granite was formed at 197 ± 1 MAMA in the Early Jurassic and formed during the uplift period at the same collision and post-collision, probably related to the extension after collisional docking between the Siberian plate and the North China plate