Mesoscale Assessment of CO₂ Storage Potential and Geological Suitability for Target Area Selection in the Sichuan Basin

Figure 2

Sichuan Basin geological structure unit zoning map. There are three first-order tectonic units in the Sichuan Basin, that is, the Southeast Sichuan fold belt, the Central Sichuan low uplift, and the Northwest Sichuan depression. The Southeast Sichuan fold belt consists of the high steep fold belt in Eastern Sichuan (I1) and the low steep bottom fold belt in Southern Sichuan (I2); the Central Sichuan low uplift is composed of the flat fold belt in Central Sichuan (II1) and the low steep fold belt in Southwestern Sichuan (II2); the Northwest Sichuan depression consists of the low-lying fold belt in Northern Sichuan (III1) and the low steep fold belt in Western Sichuan (III2).