The organic maturity of lower Palaeozoic in the eastern Yangzi Gorges area is studied by means of a new technique of kerogen infrared spectroscopy,combined with conodont color alteration index.

• 应用干酪根红外光谱技术，结合牙形石色变指数分析了峡东地区下古生界有机质成熟度。探讨了在缺乏镜质体的前泥盆纪地层和海相地层中分析有机质成熟度或古地温的另一有效途径。