Changes

[[file:petroleum-systems_fig3-9.png|thumb|300px|{{figure number|3}}Petroleum system cross section. Modified from Cornford.<ref name=ch03r3 />]]

[[file:petroleum-systems_fig3-9.png|thumb|300px|{{figure number|3}}Petroleum system cross section. Modified from Cornford.<ref name=ch03r3 />]]

The petroleum system [[cross section]] in [[:file:petroleum-systems_fig3-9.png|Figure 3]] shows migration pathways and the spatial relation of the active source rock to the reservoir rocks. This section trends longitudinally (see [[:file:petroleum-systems_fig3-8.png|Figure 2]] for location) along the Central Graben and shows the vertical migration path from the active source rock through the Cretaceous rocks and horizontally along the basal Paleogene reservoir rocks until it [[Accumulation|accumulates]] in various traps. The underburden rock is pre-Late Jurassic in age and is not involved in the petroleum system except as minor reservoir rocks and where the Permian salt (Zechstein Group) creates diapirs that form petroleum traps and migration paths in fractured chalk.

The petroleum system [[cross section]] in [[:file:petroleum-systems_fig3-9.png|Figure 3]] shows [[hydrocarbon migration|migration]] pathways and the spatial relation of the active source rock to the reservoir rocks. This section trends longitudinally (see [[:file:petroleum-systems_fig3-8.png|Figure 2]] for location) along the Central Graben and shows the vertical migration path from the active source rock through the Cretaceous rocks and horizontally along the basal Paleogene reservoir rocks until it [[Accumulation|accumulates]] in various traps. The underburden rock is pre-Late Jurassic in age and is not involved in the petroleum system except as minor reservoir rocks and where the Permian salt (Zechstein Group) creates diapirs that form petroleum traps and migration paths in fractured chalk.

==Oil-source rock correlation==

==Oil-source rock correlation==