Preliminary study on the relationship between the crust-mantle structure and the formation of Laowangzhai superlarge gold deposit |
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| Authors: | Qiantao Bian Hongquan She |
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| Institution: | (1) Institute of Geology, Chinese Academy of Sciences, 100029 Beijing, China |
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| Abstract: | 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 orecontrolling 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.
Project supported by the National Climbing Plan Programme A-30. |
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| Keywords: | crust-mantle structures superlarge gold deposit Laowangzhai |
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