Figure 9

Second-derivative curves of representative samples from the upper, middle, and lower units of the Jiujiang red earth section. Ke Yin created this figure using Origin 8.0 and CorelDRAW14.

Second-derivative curves of representative samples from the upper, middle, and lower units of the Jiujiang red earth section. Ke Yin created this figure using Origin 8.0 and CorelDRAW14.