Determination of Formation Time of Calcareous Cements in Marine Sandstone and Their Influence on Hydrocarbon Accumulation: A Case Study of the Carboniferous Donghe Sandstone in the Hadexun Oilfield, Tarim Basin

Figure 6

Determination of origin of carbonate cements based on the correlation of carbon and oxygen isotopes. (1) Dotted line: fresh water calcite area (after [36]). (2) Donghe Sandstone in Hadeson Oilfield.