Preliminary study on the relationship between the crust-mantle structure and the formation of Laowangzhai superlarge gold deposit

The essential shallow crust structural factors controlling the formation of Laowangzhai gold deposit include favorable tectonic and regional structural site, the release site of a great deal of the earth energy, favorable ore controlling structure system, abundant and favorable source rocks for gold, ductile shearing, abundant minerogenetic materials source in extensive crust and mantle. And the essential deep seated crust mantle structure factors dominating the formation of the ore deposit include intracrustal low velocity len, high velocity bodies in the lower part of middle crust and lower crust, the steps on the slope of Moho, connecting site of mantle rises, the crust mantle transition layer, upwelling of asthenosphere and the low velocity plume. It is concluded that the fundamental reason that controls the formation of Laowangzhai superlarge gold deposit lies in the coupling between deep and shallow crust mantle structure factors controlling the formation of the deposit and their coupling with the lithospheric evolution and geological event.