file:classification-of-exploration-traps_fig2-5.png|{{figure number|3}}Buck Peak field. Modified. Copyright: Vincelette and Foster,<ref name=VinceletteandFoster>Vincelette, R. R., and N. H. Foster, 1992, Fractured Niobrara of Northwestern Colorado, in J. W. Schmoker, E. B. Coalson, and C. A. Brown, eds., Geologic Studies Relevant to Horizontal Drilling: Examples from Western North America: RMAG, p 227-23=42.</ref> courtesy RMAG.
file:classification-of-exploration-traps_fig2-6.png|{{figure number|4}}Formal classification for the Buck Peak field.
file:classification-of-exploration-traps_fig2-6.png|{{figure number|4}}Formal classification for the Buck Peak field.