Jiao Dong, as an important gold base of our country, has been paid more attention by most geological researchers with its long mining history and ample gold resources. Many people from universities and institutes have held lots of scientific research that are related to extensive field, and have put forward to the typical gold type: "Ling Long type" and "Jiao Jia type". However, with the increase of exploring depth, the existing theories and method that developed from geological phenomenon of surface and shallow crust can not gradually adapted to the developing of gold mining. It is urgent for us to find a new theory and method to advance the progress of gold deposits. Taking Jiao Dong gold deposits as example, this paper simply introduces the metallogenic depth and forecasting on the depth of second rich belt in Jiao Dong area.
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