Pore Structure Differentiation between Deltaic and Epicontinental Tight Sandstones of the Upper Paleozoic in the Eastern Linxing Area, Ordos Basin, China

Figure 12

Characteristics of dissolution in coal-measure sandstone. All the sections were selected from the Taiyuan Formation of well LXD-2 and Shanxi Formation of well LXD-5, which is located in the central part of the study area, and the depths are marked. (a) Feldspar dissolution (Taiyuan Formation); (b) acid extrusive lithic dissolution (Taiyuan Formation); (c) quartz particle dissolution (Shanxi Formation); (d) interstitial dissolution (Taiyuan Formation).