Figure 6

XRD patterns of representative bulk samples from the upper (a), middle (b), and lower (c) units of the Jiujiang red earth section. I-illite; Kao-kaolinite; Q-quartz; Or-orthoclase; Pl-plagioclase. Ke Yin created this figure using Grapher 9 and CorelDRAW14. I-illite; Kao-kaolinite; Q-quartz; Or-orthoclase; Pl-plagioclase.