Fig. 5. Qinan Section: field-observed pedostratigraphy and laboratory data. Md (µm): median size; <10 µm (%): percentage of <10-µm fraction; <2 µm (%): percentage of <2-µm fraction; CaCO₃ (%): percentage of carbonate; and : magnetic susceptibility (10^–7 m³ kg^–1). Three shaded strips (I, II, III) are paleosol zones (S1S1, S1S2, S1S3). The arrows indicate carbonate leaching and accumulation.