1922年中国地质学会成立以前,四川的地层工作和整个地质工作一样,几乎是个空白。这一阶段的四十余年中,只有屈指可数的十多个外国人作过少量路线考察,而且多集中在盆地内。当时只知四川有二迭系、中生界及第四系,所指的白垩系实际上是包括了侏罗系、白垩系及部分第三系的整个红色地层。 Before the founding of the Geological Society of China in 1922, the stratigraphic work in Sichuan was almost the same as that of the entire geological work. During the more than 40 years of this phase, only a few dozen expatriates made a small number of route investigations and were mostly concentrated in the basin. At that time, I only knew that there were two superimposed systems in Sichuan, Mesozoic and Quaternary. The Cretaceous actually refers to the entire red formation that includes Jurassic, Cretaceous and some Tertiary.