Petrological Characteristics and Rock Nomenclature of Sedimentary Bauxite Gas Reservoir: A Case Study of Bauxite in Taiyuan Formation of Ordos Basin

Figure 4

Sedimentary and structural characteristics of bauxite in Taiyuan formation: (a) L58, 4039.39 m, massive structure, porcelain and conch fracture (vertical), and calcite filling in the fracture; (b) L58, 4040.27 m, developed lamina; (c) Q30, 2875.22 m, developed laminar texture and plastic deformation; black mineral is pyrite (single polarization); (d) L58, 4047.40 m, well-developed bedding texture; (e) L47, 4114.00 m, bean-oolitic diaspore, bean-oolitic dissolution pore, geopetal structure, micritic diaspore at bottom, and acicular diaspore at top; (f) H2, 4612.82 m, slump structure, rock broken and deformed, and breccia form.