| rowspan = 7 | ''Nontectonic''; Folds result from deformation by nontectonic processes such as uplift by intrusion or diapirism, differential compaction, salt withdrawal, salt solution, or meteoric impact. || rowspan = 3 | ''Intrusive core''; Dome or anticline form as a result of intrusion. || colspan = 2 | ''Salt dome or anticline''; Form as a result of uplift by salt movement.
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| colspan = 2 | ''Shale dome or anticline''; Form as a result of a shale diapir.
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| colspan = 2 | ''Igneous dome''; Form as a result of igneous intrusion.
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| colspan = 3 | ''Differential-compaction (drape) anticline''; Form by the differential compaction of sediments over a buried structure such as a reef or horst.
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| colspan = 3 | ''Salt-solution anticline''; Form as a result of salt dissolution.
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| colspan = 3 | ''Salt-withdrawal anticline''; Form as a result of salt movement out of an area.
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| colspan = 3 | ''Astrobleme''; Form as result of the impact of a meteor.