Fig. 4
From: Characteristics of Early Cretaceous wildfires in peat-forming environment, NE China
Scanning electron microscope micrographs of inertinite in the studied coals. Fusinite, one of the major maceral types in the inertinite group, shows structured and homogenized cell walls, indicating a wildfire origin. a Longitudinal section of fusinite shows fibrous structure. Sample 416, Yimin Formation, Hailar Basin; b Longitudinal section of fusinite shows fibrous structure and pitting. Sample 441, Yimin Formation, Hailar Basin; c Cross section of fusinite shows weakly deformed cellular pore in fusinite. Sample 455, Yimin Formation, Hailar Basin; d Cross section of fusinite shows deformed cellular pores in fusinite. Sample 455, Yimin Formation, Hailar Basin