Abstract

This paper establishes the lithological sequence of different salinization stage through the corresponding relation between the salinity and salt minerals. It develops salt gypsum rock-glauber's salt-gypsiferous mudstone-dolomitein in brine stage, and stratiform limestone-lamina argillaceous limestone/ lime mudstone-stratiform argillaceous limestone in salt water stage and stratiform argillaceous limestone/ lime mudstone-massive lime mudstone/ massive mudstone in brackish water stage. The shale sedimentary evolution model is established, with climate changing from the hot dry to wet, and water from shallow to deep, and salinity from high to low, lithological sequence is gypsum-carbonate-argillaceous limestone - lime mudstone and mudstone.

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