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  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

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Magoon and Dow<ref name=ch04r61>Magoon, L. B., and W. G. Dow, 1994, The Petroleum System--From Source to Trap: [http://store.aapg.org/detail.aspx?id=1022 AAPG Memoir 60], p. 3–24.</ref> define the critical moment as the time that best depicts the [[Petroleum generation|generation]]-[[migration]]-[[accumulation]] of most hydrocarbons in a [[petroleum system]]. The East Breaks 160-161 field began to accumulate no earlier than 1.2 Ma when the trap began forming, and accumulation is inferred to continue to the present<ref name=ch04r29>Dow, W. G., M. A. Yukler, J. T. Senftle, M. C. Kennicutt, and J. M. Armentrout, 1990, Miocene oil source beds in the East Breaks basin, Flex-Trend, offshore Texas: Proceedings, Gulf Coast Section SEPM 9th Annual Research conference, p. 139–150.</ref> The structural configuration has changed little since initial formation, so that the present-day map (Figure 4-42) and [[Cross section|cross-sectional geometry]] (Figure 4-43) accurately depict the trapping aspects of the petroleum system.

Magoon and Dow<ref name=ch04r61>Magoon, L. B., and W. G. Dow, 1994, The Petroleum System--From Source to Trap: [http://store.aapg.org/detail.aspx?id=1022 AAPG Memoir 60], p. 3–24.</ref> define the critical moment as the time that best depicts the [[Petroleum generation|generation]]-[[migration]]-[[accumulation]] of most hydrocarbons in a [[petroleum system]]. The East Breaks 160-161 field began to accumulate no earlier than 1.2 Ma when the trap began forming, and accumulation is inferred to continue to the present<ref name=ch04r29>Dow, W. G., M. A. Yukler, J. T. Senftle, M. C. Kennicutt, and J. M. Armentrout, 1990, Miocene oil source beds in the East Breaks basin, Flex-Trend, offshore Texas: Proceedings, Gulf Coast Section SEPM 9th Annual Research conference, p. 139–150.</ref> The structural configuration has changed little since initial formation, so that the present-day map ([[:File:Sedimentary-basin-analysis_fig4-42.png|Figure 1]]) and [[Cross section|cross-sectional geometry]] ([[:File:Sedimentary-basin-analysis_fig4-43.png|Figure 2]]) accurately depict the trapping aspects of the petroleum system.

 

==Possible critical moments==

==Possible critical moments==

According to the [[maturation]] model for a middle Miocene [[source rock]], peak oil generation would have begun 0.2 Ma<ref name=ch04r29 /> and the critical moment for the East Breaks 160-161 petroleum system would be 0.20 Ma (Figures 4-45 and 4-53). If a stratigraphically deeper lower Paleocene or upper Jurassic source rock is the origin of the East Breaks oils, an earlier onset of significant generation could have occurred with [[migration]], continuing to today and supplying the petroleum that has charged the field.

According to the [[maturation]] model for a middle Miocene [[source rock]], peak oil generation would have begun 0.2 Ma<ref name=ch04r29 /> and the critical moment for the East Breaks 160-161 petroleum system would be 0.20 Ma ([[:File:Sedimentary-basin-analysis_fig4-45.png|Figures 3]] and [[:File:Sedimentary-basin-analysis_fig4-53.png|4]]). If a stratigraphically deeper lower Paleocene or upper Jurassic source rock is the origin of the East Breaks oils, an earlier onset of significant generation could have occurred with [[migration]], continuing to today and supplying the petroleum that has charged the field.

==Summary==

==Summary==