Average aromatic nuclear size of kerogen, which has a good linear relationship with vitrinite reflectance, can be used to evaluate the thermal maturation of pre-Devonian marine carbonate.

• 干酪根芳核平均结构尺寸可作为前泥盆系海相碳酸盐岩新的热演化衡量标尺，它与镜质体反射率有良好线性关系；