Formation Mechanism and Prediction Method for the Permian Fused Breccia Tuff Reservoir, Wuxia Region, Junggar Basin

Figure 4

Schematic of the formation mechanism of fused breccia tuff vesicles in the Wuxia region, modified according to literature [32]. Numbers indicate the formation process of the vesicles: (1) magma rises volatile material foam, (2) explosion at the surface, (3) a small part of the volcanic dust and pyroclastic material is erupted into the upper atmosphere, (4) the hot magma flows into the lake, and (5) high-pressure water vapor is squeezed into the pyroclastic flow.