Figure 3
Diagenetic characteristics of the Z2dn4 Formation. (a) Bioclasts, mudclasts and early cement, plane-polarized light (non-polarized transmitted light), well GS6, 5048.97 m. (b) II-dolomite with a cloudy center and a clear rim (non-polarized transmitted light), well GS6, 5035.84 m. (c) Planar distribution of inclusions in a cloudy center (non-polarized transmitted light), well GS6, 5035.02 m. (d) Different kinds of dolomite within a pore (cathodoluminescence), well GS6, 5035.84 m. (e) Pyrobitumen accompanied by III-dolomite (non-polarized transmitted light), well GS6, 5049.1 m. (f) III-dolomite and quartz (cross-polarized transmitted light), well GS103, 5177.67 m. (g) Pyrobitumen associated with galena, well GS102 (non-polarized reflecting light), 5043.2 m. (h) Sphalerite and quartz in a lead-zinc vein (non-polarized reflecting light), well GS101, 5177 m. (i) Pyrobitumen with strong anisotropy (non-polarized reflecting light), well GS105, 5220 m.
