Fig. 8 | Scientific Reports

Fig. 8

From: Organic matter accumulation under the Middle-Upper Ordovician tectonic transition on the western margin of the North China platform

Fig. 8

Organic geochemistry characteristics of the Wulalike shales. (A) Plot of free hydrocarbons (S1) versus total organic carbon (TOC). (B) Pyrolysis hydrocarbons cracked from kerogen (S2) versus TOC plot, showing the potential of the generative source rock (boundary lines modified after62. (C) Hydrogen index (HI) versus oxygen index (OI) of kerogen from Wulalike source rock (boundary lines modified after60. (D) Plot of HI versus the pyrolysis temperature of the maximum pyrolysate yield (Tmax) for the Wulalike source rock, showing the kerogen quality and the thermal maturity stages (boundary lines modified after61.

Back to article page