Permo-Carboniferous Formation developed in basement of Songliao Basin has several characteristics such as high organic abundance and high thermal evolution.

• 摘要松辽盆地基底发育的石炭-二叠系具有有机质丰度高、热演化程度高的特点，其是否可以作为松辽盆地深层的有效气源岩，一直被人们所关注。