Abstract: Based on the data of the rock-configuration, cathodoluminescence, scanning electron microscope and energy spectrum of Lianglitage formation in Zhong-2 well located in the southern slope of Tazhong area in Tarim basin, the remaining pores and cavities in the cores are formed by the burial dissolution. And the pores and cavities are corroded and filled with the coarse calcite or dolomite formed by the carbonate mineral's solution and deposition in the burial condition. The ⁸⁷Sr/⁸⁶Sr ratio in the grainstone and calcite in the cavity at the base of Lianglitage formation is lower than that in the seawater at that time, but the ⁸⁷Sr/⁸⁶Sr ratio at the top of Lianglitage formation is higher than that in the seawater because the continental fragment (e.g. feldspar) is corroded. The burial cementation and dissolution are proved by the homogenization temperature and salinity of the two-phase saline inclusion of the late filling calcite vein and pore-filling calcite.

Key words: diagenesis, burial dissolution, carbonate rock, Lianglitage formation, Tarim basin