Research Article
Geochemical Characteristics and Origins of the Crude Oil of Triassic Yanchang Formation in Southwestern Yishan Slope, Ordos Basin
Figure 3
Cross plots of Pr/C17 versus Pr/Ph ratios (a) and Ph/C18 versus Pr/Ph ratios (b) of samples in Southwestern Yishan Slope.
(a) |
(b) |