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==Classes and definitions==

==Classes and definitions==

The proposed classes in the fold trap regime are monocline, local dome, regional dome, local nose, regional nose, local anticline, regional anticline, and [[syncline]]. The following outline shows the classes, some of the subclasses, style, and their definitions. The Subclasses listed are not inclusive but represent the more common types of fold traps and show how the proposed classification scheme can be developed and defined.

The proposed classes in the [[fold]] trap regime are monocline, local dome, regional dome, local nose, regional nose, local anticline, regional anticline, and [[syncline]]. The following outline shows the classes, some of the subclasses, style, and their definitions. The Subclasses listed are not inclusive but represent the more common types of fold traps and show how the proposed classification scheme can be developed and defined.

{| class="wikitable"

{| class="wikitable"

| colspan = 2 | ''Simple''

| colspan = 2 | ''Simple''

|-

|-

| colspan = 3 | ''Monocline''; A fold that occurs where strata dip or flex from the horizontal in one direction only and are not a part of a anticline or syncline.<ref name=ch02r11>Rittenhouse, G., 1972, [http://archives.datapages.com/data/specpubs/fieldst4/data/a010/a010/0001/0000/0014.htm Stratigraphic-trap classification], in King, R., E., ed., Stratigraphic Oil and Gas Fields: AAPG Memoir 16, p. 14–28.</ref> A monocline can form only part of the trap closure and must combine with other elements for closure.

| colspan = 3 | ''Monocline''; A fold that occurs where strata [[dip]] or flex from the horizontal in one direction only and are not a part of a anticline or syncline.<ref name=ch02r11>Rittenhouse, G., 1972, [http://archives.datapages.com/data/specpubs/fieldst4/data/a010/a010/0001/0000/0014.htm Stratigraphic-trap classification], in King, R., E., ed., Stratigraphic Oil and Gas Fields: AAPG Memoir 16, p. 14–28.</ref> A monocline can form only part of the trap closure and must combine with other elements for closure.

|-

|-

| colspan = 3 | ''Regional nose''; A short plunging anticline without closure. A trap where a nose is a trapping element must combine with other elements to have closure.

| colspan = 3 | ''Regional nose''; A short plunging anticline without closure. A trap where a nose is a trapping element must combine with other elements to have closure.

==Families==

==Families==

Based on their genesis, folds can be divided into two superfamily categories: tectonic and nontectonic. The table below presents the superfamilies, families, and subfamilies and their definitions for anticlinal fold traps. As with fold classes, the fold families listed below are not inclusive but merely represent the more common fold families.

Based on their genesis, [[fold]]s can be divided into two superfamily categories: tectonic and nontectonic. The table below presents the superfamilies, families, and subfamilies and their definitions for anticlinal fold traps. As with fold classes, the fold families listed below are not inclusive but merely represent the more common fold families.

{| class="wikitable"

{| class="wikitable"

| colspan = 2 | ''Shale dome or anticline''; Form as a result of a shale diapir.

| colspan = 2 | ''Shale dome or anticline''; Form as a result of a shale diapir.

|-

|-

| colspan = 2 | ''Igneous dome''; Form as a result of igneous intrusion.

| colspan = 2 | ''[[Igneous]] dome''; Form as a result of igneous intrusion.

|-

|-

| colspan = 3 | ''Differential-compaction (drape) anticline''; Form by the differential compaction of sediments over a buried structure such as a reef or horst.

| colspan = 3 | ''Differential-compaction (drape) anticline''; Form by the differential compaction of sediments over a buried structure such as a reef or horst.

[[Category:Traps, trap types, and the petroleum system]]  

[[Category:Traps, trap types, and the petroleum system]]  

[[Category:Classification of exploration traps]]

[[Category:Classification of exploration traps]]