Study on Hydrocarbon Accumulation Periods Based on Fluid Inclusions and Diagenetic Sequence of the Subsalt Carbonate Reservoirs in the Amu Darya Right Bank Block

Figure 4

Schematic representation of different diagenetic sequences and fluid inclusion stages. The serrated red lines show the boundary between (i) and (ii) calcite cements. The two phases cannot be distinguished in plane-polarized light. With cathodoluminescence illumination, the (i) overgrowth cements maintain the same nonluminescent properties as the intraclast, while the (ii) cements are brightly red luminescent, as shown in Figures 3(a) and 3(b). (i) Syntaxial calcite cement; (ii) (Early) Mesogenetic calcite cement; (iii) (Late) Mesogenetic calcite cement; (iv) (Late) Mesogenetic calcite veins.