2. 黑龙江省地矿投资集团有限公司，哈尔滨150036;

3. 中国地质大学( 北京) 地球科学与资源学院，北京100083;

4. 黑龙江省第五地质勘查院，哈尔滨150036

种热液元素标准化后的978 件样品使用主成分分析法抽取因子，得到3 个特征值＞ 1 的主因子( Cu －

Pb － Zn － Ag; Au － Mo; Bi － As) ，但不能合理做地质解释; 经过最大方差法的因子旋转后，得到3 个新的主因子( Ag － Pb － Zn; Cu － Mo － Bi; Au － As) ，在地质解译上更具优势。新的主因子组合指示研究区内存在一热液系统，从含矿热液中心到远端，自南向北依次有高、中、低温元素沉淀，在工程查证中见到相应元素的矿化体产出。同时根据因子得分值与地质体的关系( 主因子强度空间平面分布图) ，将成矿时间界定在早侏罗世与晚侏罗世之间。

2. Heilongjiang Geology and Mineral Ｒesources Investment Group Co． Ltd.，Harbin 150036，China;

3. Institute of Geosciences and Ｒesources，China University of Geosciences，Beijing 100083，China;

4. The Fifth Geological Survey Institute of Heilongjiang Province，Harbin 150036，China

greater than 1 were obtained，but they could not be reasonably interpreted． Three new principal factors ( Ag － Pb －Zn; Cu － Mo － Bi; Au － As) were obtained after factor rotation of maximum variance method，which have more advantages

in geological interpretation． It indicates that there existed a hydrothermal system in study area． From the ore bearing hydrothermal center to the far end，precipitation of high，medium and low temperature elements occurred from south to north in turn． Ore bodies of corresponding elements can be seen by engineering verification． Meanwhile，according to the relationship between factor score and geological body ( spatial distribution map of principal

factor intensity) ，the metallogenic time is defined between the Early Jurassic and Late Jurassic．