SEDIMENTARY CHARACTERISTICS OF THE EAST HUBEI REGION DURING THE MIDDLE AND LATE EARLY TRIASSIC

The middle and late Early Triassic sedimentary environments in eastern Hubei include the upper part of intertidal zone, supratidal zone and sabkha, where a succession of the dolomite-bearing carbonate rocks, namely the main ore-forming country rocks of the Daye-type iron and copper deposits etc. were deposited. The present paper deals in detail with sedimentary characteristics of the carbonate rocks according to sectional structures, rock types, sedimentary structures and geochemical characteristics, and finally, the relationship between lithology and mineralization is also discussed.