This paper introduces the half peak width method (KI index) which is widely used in the or1d to analyze the Permo-carboniferous sample from Budate Group in Geier Sag in Hailaer Basin and northern Songliao Basin.

• 引入国际通行的半峰宽法（KI指数法），对海拉尔盆地贝尔凹陷布达特群和松辽盆地北部石炭－二叠系的样品进行了分析。