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Line 41: − + − [[file:classification-of-exploration-traps_fig2-1.png|300px|thumb|{{figure number|1}}Map and cross section of the East Anschutz Ranch field.]]+ + − − [[file:classification-of-exploration-traps_fig2-2.png|thumb|300px|{{figure number|2}}Formal classification for East Anschutz Ranch.]]
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==Informal classification==
==Informal classification==
<gallery mode=packed heights=200px widths=200px>
classification-of-exploration-traps_fig2-1.png|{{figure number|1}}Map and cross section of the East Anschutz Ranch field. From White et al., 1990; courtesy AAPG.
classification-of-exploration-traps_fig2-2.png|{{figure number|2}}Formal classification for East Anschutz Ranch.
An informal classification is a description that conveys a general or specific impression of a trap. For example, East Anschutz Ranch field, shown in the map and [[cross section]] in [[:file:classification-of-exploration-traps_fig2-1.png|Figure 1]], could be informally classified as an anticlinal trap. This informal classification conveys a very general impression of the trap. Informal classification can also be more specific. For example, we might classify East Anschutz as an elongated asymmetric anticline with a gently dipping back limb and a steeply to overturned forelimb.
An informal classification is a description that conveys a general or specific impression of a trap. For example, East Anschutz Ranch field, shown in the map and [[cross section]] in [[:file:classification-of-exploration-traps_fig2-1.png|Figure 1]], could be informally classified as an anticlinal trap. This informal classification conveys a very general impression of the trap. Informal classification can also be more specific. For example, we might classify East Anschutz as an elongated asymmetric anticline with a gently dipping back limb and a steeply to overturned forelimb.
==Formal classification==
==Formal classification==
A formal classification conveys more information than an informal classification. It is also more rigorous. The diagram in [[:file:classification-of-exploration-traps_fig2-2.png|Figure 2]] shows the formal classification for East Anschutz Ranch.
A formal classification conveys more information than an informal classification. It is also more rigorous. The diagram in [[:file:classification-of-exploration-traps_fig2-2.png|Figure 2]] shows the formal classification for East Anschutz Ranch.