Fig. 6From: Paleosols in an outcrop of red beds from the Upper Cretaceous Yaojia Formation, southern Songliao Basin, Jilin Province, NE ChinaMicro pedogenesis observed in thin sections and SEM. a Root traces marked with a yellow arrow in plane-polarized light; note the color difference between root traces and hematite bearing surrounding paleosol matrix; b Calcite filling root traces marked with yellow arrows in perpendicular polarized light; c Analcime filled root traces observed in SEM, the analcime are approximately 50–200 μm in diameter; d Clay skins with diffusion ferran around clay clasts in the paleosolsBack to article page