− | To better determine when the Mandal source rock was actively generating petroleum, a burial history chart ([[:file:petroleum-systems_fig3-7.png|Figure 1]]) was constructed. Based on this and other charts, peak generation of petroleum occurred at about 30 Ma, selected as the critical moment. | + | To better determine when the Mandal source rock was actively generating petroleum, a burial history chart ([[:file:petroleum-systems_fig3-7.png|Figure 1]]) was constructed. Based on this and other charts, peak [[Petroleum generation|generation]] of petroleum occurred at about 30 Ma, selected as the critical moment. |