Accumulation contribution differences between lacustrine organic-rich shales and mudstones and their significance in shale oil evaluation

ZHAO Wenzhi,ZHU Rukai,HU Suyun,HOU Lianhua,WU Songtao

Fig. 2. Particle size distribution histogram of pyrite samples with different TOC values in the Yishicun section in Tongchuan (TOC- total organic carbon content; N-number of samples; D-average grain size).