Page 26 - The Petroleum System From Source to Trap

18 Magoon and Dow

1 Petroleum system
Petroleum
West accumulation(s) East

Top oil window

A Pod of active
source rock
Geologic time:
Maximum burial depth
(Critical moment)

2 Petroleum systems
Petroleum
West accumulation(s) East

Pod of active Pod of active
8 source rock source rock

Geologic time:
Pod of active Maximum burial depth
source rock (Critical moment)
1 Petroleum system

Petroleum
West East
accumulation(s)

Top gas window
Pod of active Pod of active
source rock source rock
c

Figure . 8. The number of petroleum systems is determined by the number of pods of active source, as shown by these
1
three examples. Petroleum accumulation is charged by (A) a single pod of source rock, or one petroleum system; (B) two
pods, or two petroleum systems; and (C) one pod, or one petroleum system.