Changes

[[file:petroleum-systems_fig3-11.png|thumb|300px|{{figure number|5}}Events chart. Modified from Cornford.<ref name=ch03r3 />.]]

[[file:petroleum-systems_fig3-11.png|thumb|300px|{{figure number|5}}Events chart. Modified from Cornford.<ref name=ch03r3 />.]]

An events chart indicates when the essential elements and processes took place to form a petroleum system, the critical moment, and the preservation time. In [[:file:petroleum-systems_fig3-11.png|Figure 5]], the source rock is the Upper Jurassic to Lower Cretaceous Mandal Formation, which was deposited as the rift formed. Most overburden rock of Cretaceous to Cenozoic age was deposited after the rift formed. The seal rock ranges from Permian to Neogene and consists of halite, shale, and chalk. Based on volume of petroleum, the Permian to Jurassic reservoir rocks are least important; the most important reservoir rocks are Late Cretaceous to early Paleogene in age. Most traps were created as the rift formed and filled through structural movement and halokenesis. Petroleum generation-migration-[[accumulation]] occurred from just over 100 Ma to the present day. The critical moment, or peak generation, is at 30 Ma.

An events chart indicates when the essential elements and processes took place to form a petroleum system, the critical moment, and the preservation time. In [[:file:petroleum-systems_fig3-11.png|Figure 5]], the source rock is the Upper Jurassic to Lower Cretaceous Mandal Formation, which was deposited as the rift formed. Most overburden rock of Cretaceous to [[Cenozoic]] age was deposited after the rift formed. The seal rock ranges from Permian to Neogene and consists of halite, shale, and chalk. Based on volume of petroleum, the Permian to Jurassic reservoir rocks are least important; the most important reservoir rocks are Late Cretaceous to early Paleogene in age. Most traps were created as the rift formed and filled through structural movement and halokenesis. Petroleum generation-migration-[[accumulation]] occurred from just over 100 Ma to the present day. The critical moment, or peak generation, is at 30 Ma.

==Size of the petroleum system==

==Size of the petroleum system==