“…There are several studies from the Soma Basin that mainly focused on geological setting, palaeopalynological, as well as environmental and economic aspects (Nebert, 1978;Akgün et al, 1986;Gemici et al, 1991;Takahashi and Jux, 1991;Akgün, 1993;İnci, 1998a, b, 2002Karayiğit et al, 2000Karayiğit et al, , 2006Vassilev et al, 2005;Tercan et al, 2013;Hokerek and Ozcelik, 2015;Baysal et al, 2016;Kayseri-Özer, 2016). Coal-petrographical and geochemical studies are limited (Karayiğit and Whateley, 1997;Karayiğit, 1998;Tuncalı et al, 2002;Bulut and Karayiğit, 2006;Toprak, 2009).…”