山东招-掖金矿带的西延去向探讨

山东招（远）－掖（县）金矿带所处的胶北隆起带与五河一蚌埠金矿带所处的淮河地块，在中生代以前为处于华北板块南缘的同一构造单元，郯庐断裂中生代大规模左行平移使两者错开，招－掖金矿带与五河－蚌埠金矿带具有类似的基底，矿源层，成矿期，矿床类型，成矿期岩浆活动，控矿构造等。因而，推测五河－蚌埠金矿带是招－掖金矿带在郯庐断裂带以西的延伸。由于淮河地块燕山期岩浆活动和郯庐断裂系的发育较弱于胶北隆起带，估计五河－

DISCUSSION ON THE WESTERN EXTENSION OF THE ZHAO-YE GOLD ORE BELT, SHANDONG

The northern Shandong uplift hosting the Zhao-Ye gold ore belt and the Huaihe massif hosting the Wuhe-Bengbu gold ore belt belonged to the same tectonic unit on southern margin of North China platform before Mesozoic.Both of them were offset by large-sized sinistral move of the Tanlou fault in Mesozoic. These two gold ore belts have some similarities in basement, source bed, metallogenic epoch,types of ore deposits, magmatic activity and ore-controlling structures. Consequently, it is infered that the Wuhe-Bengbu gold ore belt represents the western extension of the Zhao-Ye gold ore belt. Because Yanshnnian magmatism is not as intensive and Tanlou fault system in the Huaihe massif is not as well-developed as those in the Zhao-Ye gold ore belt, unlike the northern Shandong, the Wuhe-Bengbu gold belt shows weaker mineralization.