Analysis on Black Shale Sedimentary Paleoenvironment and Tectonic Setting of the First Member of Luzhai Formation of Lower Carboniferous, Rongshui Area of Guangxi, China

Figure 3

Core characteristics of shale in the first member of Luzhai Formation: (a) the boundary between grey marl of Yaoyunling Formation and black mudstone of Luzhai Formation; (b) slightly developed foliation, 0.1~0.2 mm thick; (c) black carbonaceous shale, rich in carbon; (d) black carbonaceous shale with dark grey marl lamina.

(a) Depth of 1630.38~1635.30 m

(b) Depth of 1548.68 m

(c) Depth of 1617.58 m

(d) Depth of 1619.27~1619.41 m