Many measured profiles of Ba Formation-Longge Formation of Lower Permian in Yalong Aobao Reservoir of Qiang nationality-silty calcium-containing sericite mica plate.

3. 1.2- 1 residual silt-micro-scale, crystal structure, plate structure. Timely 10%, sericite 55%, hard chlorite 2%, cuttings 15%, carbonaceous 4%, muscovite 4%, dolomite 5% and calcite 5%. 2×, single polarization (left) and orthogonal polarization (right)

3. 1.2-2 Residual cuttings include timely, cuttings and muscovite. 4x, single polarization (left) and orthogonal polarization (right)

3. 1.2-3 is slender and granular, with a particle size of 0.03 ~ 0.05 mm 10× and orthogonal polarization (left); 4×, orthogonal polarization (right)

3. 1.2-4 cuttings are flat, elongated and directionally arranged, with a long diameter of 0.03 ~ 0.07mm 10× and single polarization (left); Orthogonal polarization (right)

3. 1.2-5 muscovite is leaflike, with a slice diameter of 0.03~0.07mm, and individual muscovite is 0. 12mm, showing directional distribution. 10×, single polarization (left) and orthogonal polarization (right)

3. 1.2-6 sericite is micro-scaly, directionally arranged, and the rocks are plate-like. The distribution of carbon is uneven. 10×, single polarization (left) and orthogonal polarization (right)

3. 1.2-7 The particle size of calcite and dolomite is about 0.03mm, in which dolomite precipitates iron. 10×, single polarization (left) and orthogonal polarization (right)

3. 1.2-8 hard chlorite column, long diameter 0. 15 ~ 0.2 mm, multi-oblique foliation distribution, and pressure shadow composed of mineral processing time and muscovite at the edge. 10×, single polarization (left) and orthogonal polarization (right)