Figure 3
Histogram of Pr/Ph ratio and saturated hydrocarbon carbon isotopes in different formations of source rocks in the West Java Basin (the date from Michele, (2000))18. (A) The high ratio of Pr/Ph dominated by the Oligocene Talang Akar Formation. (B) The heavy carbon isotopes in the shale of the Banuwati Formation. The two parameters distinguish these two types of source rocks well. Compared with the Banuwati Formation source rocks, the Oligocene Talang Akar Formation source rocks have higher ratio of Pr/Ph and relatively low carbon isotope value of saturated hydrocarbons.
