摘要
In recent years, many gold deposits (outcrops) have been discovered in the footwall of the Guocheng fault in the Guocheng region, Haiyang, Shandong Province. Studies have found that the mineralization characteristics of these gold deposits are very different from other areas in the Jiaodong Peninsula. The studies on the deposit geology, ore-controlling structures and ore-forming fluid reveal that complexity of shapes and diversity of occurrences of ore bodies were resulted from multiple-group of ore-controlling structures. In this area, the tectonic stress field of mineralization time was left-shear on the major Guocheng fault. The ore-forming fluid was the H2O-CO2-NaCl-CaCl2 system with medium-high salinity. Sulfur isotopic compositions reflect that mineralization fluid was from crustal magmatic hydrotherm formed by partial melting of ancient metamorphic rocks.