Seventy-nine gold deposits and prospects have been discoveried in the Jiamusi region of northeast China, and constitute one of
the most important gold metallogenic belts in China. All these endogenic gold occurrences can be subdivided into three main
deposit types: (1) porphyry related; (2) metamorphic-intrusive hosted, and (3) sediment-hosted deposit. The first two types of
gold deposit are spatially and temporally related to Mesozoic Yanshanian granitoid intrusions with hydrothermal activity
channelled along crustal-scale fissures. The ultimate cause of the Yanshanian magmatism is considered to be the subduction of
Pacific oceanic lithosphere beneath the Eurasian continent. In contrast, The chemical sediment-hosted deposit is typified by
the Dongfengshan gold deposit, and genetically related to Proterozoic sedimentation and Mesozoic igneous activities.