The Marginal Sea Tectonic Character of Yana-Kolyma Gold Belt
The analytical overview of ideas regarding the nature of the «Kolymian gold» serves as a basis for the author to recognize the following factors of a high ore potential of Glavny (Yana-Kolyma) Gold Belt, which coincides in its larger part with Injali-Debin Synclinorium: placement of type-different marginal seas (Oimyakon and Alazeya-Oloi basins) within a junction zone expressed as an interplate collisional suture; a long-lasting deep sedimentation over black shale and siliceous shale of different origins enriched with ore minerals; and, finally, an intense deformation and reworking of the latter through accretionary subduction and the following faulting and collision events of the orogeny stages accompanied by intense and diverse magmatic, metamorphic and metallogenic processes. Major gold-bearing belts including Yana-Kolyma Belt are related to the new areas of forming juvenile continental crust, which, from the viewpoint of their paleotectonics, are deep troughs of ancient marginal seas. The necessity to recognize the marginal sea type of the lithosphere is corroborated by many new facts and data including metallogenic study results.