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There is a close relationship between occurrence of nonmetallic minerals and tectonic evolution of geosyncline, platform and diwa (geodepression) on the western margin of the Dongting diwa. Some results that (1) diwa tectonics is berfeficial for formation and preservation of nonmetallic minerals and (2) volcano-sedimentary altered ore deposits, saline deposits and organo-sedimentary ore deposits can be often found in diwa basins are gained.
There are a close relationship between occurrence of nonmetallic minerals and tectonic evolution of geosyncline, platform and diwa (geodepression) on the western margin of the Dongting diwa. Some results that (1) diwa tectonics is berfeficial for formation and preservation of nonmetallic minerals and ( 2) volcano-sedimentary altered ore deposits, saline deposits and organo-sedimentary ore deposits can be often found in diwa basins are gained.