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==Seal quality and dip rate==
 
==Seal quality and dip rate==
Large stratigraphic traps are most common in basins with gentle structural dip, where small hydrocarbon columns can be areally extensive. As structural dip steepens, the need for high-quality seals increases, raising the probability of trap failure (e.g., .<ref name=ch21r19>Gries, R., Dolson, J., C., Reynolds, R., G., H., 1993, Structural and stratigraphic evolution and hydrocarbon distribution, Rocky Mountain Foreland, in Macqueen, R., W., Leckie, D., A., eds., Foreland Basins and Fold Belts: AAPG Memoir 55, p. 395–425.</ref> That is why large stratigraphic traps are most common in basins with gentle structural dip, where small hydrocarbon columns can be areally extensive. [[:file:exploring-for-stratigraphic-traps_fig21-2.png|Figure 2]] illustrates in map view how dip rate affects stratigraphic trap size.
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Large stratigraphic traps are most common in basins with gentle structural dip, where small hydrocarbon columns can be areally extensive. As structural dip steepens, the need for high-quality seals increases, raising the probability of trap failure.<ref name=ch21r19>Gries, R., Dolson, J., C., Reynolds, R., G., H., 1993, [http://archives.datapages.com/data/specpubs/basinar3/data/a136/a136/0001/0350/0395.htm Structural and stratigraphic evolution and hydrocarbon distribution, Rocky Mountain Foreland], in Macqueen, R., W., Leckie, D., A., eds., Foreland Basins and Fold Belts: [http://store.aapg.org/detail.aspx?id=143 AAPG Memoir 55], p. 395–425.</ref> That is why large stratigraphic traps are most common in basins with gentle structural dip, where small hydrocarbon columns can be areally extensive. [[:file:exploring-for-stratigraphic-traps_fig21-2.png|Figure 2]] illustrates in map view how dip rate affects stratigraphic trap size.
    
[[file:exploring-for-stratigraphic-traps_fig21-3.png|left|thumb|{{figure number|3}}See text for explanation.]]
 
[[file:exploring-for-stratigraphic-traps_fig21-3.png|left|thumb|{{figure number|3}}See text for explanation.]]

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