山东沂沭断裂带中段地质特征及金矿预测模型

在系统收集资料的基础上,通过阐述沂沭断裂带中段的区域地质特征、地球物理、地球化学等特征,深入剖析了龙泉站金矿区的控矿地质要素.区内金矿体以脉状、透镜状产于沂水—汤头断裂下盘,赋矿岩石为黄铁矿化糜棱岩质碎裂岩、黄铁矿化花岗质碎裂岩.总结了矿区的成矿规律和找矿标志,从地质环境、矿床特征、地球化学特征和地球物理特征等方面建立了沂沭断裂带中段地区的找矿预测模型,为今后进一步在该区开展金矿找矿工作提供了依据和找矿方向.

Geological characteristics and gold prospecting model in middle sector of Yishu fault belt in Shandong

Based on the systematic collection of data, the authors elaborated the geological characteristics, geophysical and geochemical characteristics of the study area in middle sector of Yishu fault belt. The controlling geological factors were analyzed deeply for Longquanzhan gold deposit, whose gold bodies were located in the lower part of main fault plane of Yishui-Tangtou fault. Gold bodies lay between pyrite mylonitic cataclastic rocks and pyrite granitic fragmentized rocks, displaying lenticular and vein occurrences. The authors summarized the metallogenic regularity and prospecting indicators of the gold deposit. The prognosis model established in the middle sector of Yishu fault belt, concluding the geological environment, deposit characteristics, geochemical features, geophysical characteristics and other aspects. The achievements obtained provided the basis for the further gold prospecting, and established the exploration directions for gold exploration in the study area in the future.