Recognition of Petroleum Origin in the Northern Piedmont Belt of Turpan-Hami Basin and Its Significance

Figure 6

The characteristics of tricyclic terpanes in the inclusions, oil and sandstones of the northern piedmont belt of the Turpan-Hami Basin. (a) Cross-plot of C₁₉TT/C₂₁TT and C₂₆TT/C₂₄ tetracyclic terpanes. (b) Percentage of C₁₉₊₂₀TT, C₂₁TT, and C₂₃TT in inclusions, oil, and sandstone. Note: K-I: Kekeya-inclusion; K-S: Kekeya-sandstone; K-O: Kekeya-crude oil; S-I: Shanle-inclusions; S-O: Shanle-crude oil; Z-I: Zhaobishan-inclusions; Z-O: Zhaobishan-crude oil; Z-S: Zhaobishan-sandstone: A-O: Aketashi-crude oil; A-S: Aketashi-sandstone; Q-S: Qialekan-sandstone.

(a)

(b)