Paleoenvironment, Geochemistry, and Pore Characteristics of the Postmature to Overmature Organic-Rich Devonian Shales in Guizhong Depression, Southwestern China

Figure 4

The amorphous and algal bodies of sapropelite from kerogen microscopic examination: (a) (231 m), (b) (579 m), (c) (639 m), and (d) (795 m).

(a)

(b)

(c)

(d)