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| | part = Traps, trap types, and the petroleum system | | | part = Traps, trap types, and the petroleum system |
| | chapter = Classification of exploration traps | | | chapter = Classification of exploration traps |
− | | frompg = 2-1 | + | | frompg = 2-23 |
− | | topg = 2-42 | + | | topg = 2-24 |
| | author = Richard R. Vincelette, Edward A. Beaumont, Norman H. Foster | | | author = Richard R. Vincelette, Edward A. Beaumont, Norman H. Foster |
| | link = http://archives.datapages.com/data/specpubs/beaumont/ch02/ch02.htm | | | link = http://archives.datapages.com/data/specpubs/beaumont/ch02/ch02.htm |
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| ==Classes and definitions== | | ==Classes and definitions== |
| | | |
− | There are four classes in the fault trap regime: normal fault, reverse fault, thrust fault, and wrench fault. The outline below shows definitions and examples for the classes and subclasses of these traps or trapping elements. | + | There are four classes in the fault trap regime: normal fault, reverse fault, thrust fault, and [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=wrench%20fault wrench fault]]. The outline below shows definitions and examples for the classes and subclasses of these traps or trapping elements. |
| | | |
| {| class = wikitable | | {| class = wikitable |
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| ! Regime || Class || Subclass | | ! Regime || Class || Subclass |
| |- | | |- |
− | | rowspan = 7 | Fault trap; Fault(s) forms part or all of the closure of the trap by sealing the reservoir either laterally and/or from the top (after Biddle and Wielchowsky, 1995).{{citation needed}} || rowspan = 3 | Normal fault trap; One or more form all or part of lateral closure by sealing the reservoir. || Tilted fault block; Block of rock bounded on one or more sides by normal faults. Rotation traps hydrocarbons along edges or in corners. | + | | rowspan = 7 | Fault trap; Fault(s) forms part or all of the closure of the trap by sealing the reservoir either laterally and/or from the top (after Biddle and Wielchowsky<ref name=Biddle&Wichelsky1994>Biddle, K. T., and C. C. Weilchowsky, 1994, [http://archives.datapages.com/data/specpubs/methodo2/data/a077/a077/0001/0200/0219.htm Hydrocarbon traps], in L. B. Magoon and W. G. Dow, eds., The Petroleum System—from Source to Trap: [http://store.aapg.org/detail.aspx?id=1022 AAPG Memoir 60], p. 219–235.</ref>) || rowspan = 3 | Normal fault trap; One or more form all or part of lateral closure by sealing the reservoir. || Tilted fault block; Block of rock bounded on one or more sides by normal faults. Rotation traps hydrocarbons along edges or in corners. |
| |- | | |- |
| | Horst; Block of rock bounded on all sides by normal faults. | | | Horst; Block of rock bounded on all sides by normal faults. |
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| | colspan = 2 | Reverse fault trap; One or more faults form all or part of the closure by sealing the reservoir. | | | colspan = 2 | Reverse fault trap; One or more faults form all or part of the closure by sealing the reservoir. |
| |- | | |- |
− | | rowspan = 2 | Thrust fault trap; Forms all or part of the closure by sealing the reservoir either laterally or from the top or bottom. || Overthrust; Forms all or part of the closure by sealing the reservoir laterally. | + | | rowspan = 2 | Thrust fault trap; Forms all or part of the closure by sealing the reservoir either laterally or from the top or bottom. || [[Overthrust]]; Forms all or part of the closure by sealing the reservoir laterally. |
| |- | | |- |
| | Subthrust; Forms all or part of the closure by sealing the reservoir laterally or from the top. | | | Subthrust; Forms all or part of the closure by sealing the reservoir laterally or from the top. |
| |- | | |- |
− | | Wrench fault trap; Forms all or part of the closure by sealing the reservoir laterally or from the top. || Flower structure; Opposing reverse faults diverge upward, forming a fan or flower cross section pattern. Develop along wrench fault zones. | + | | Wrench fault trap; Forms all or part of the closure by sealing the reservoir laterally or from the top. || Flower structure; Opposing reverse faults diverge upward, forming a fan or flower [[cross section]] pattern. Develop along wrench fault zones. |
| |} | | |} |
| | | |
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| ! Regime || Class || Subclass || Superfamily || Family || Subfamily || Variety | | ! Regime || Class || Subclass || Superfamily || Family || Subfamily || Variety |
| |- | | |- |
− | | rowspan = 11 | Fault traps || rowspan = 3 | Normal faults || rowspan = 3 | Tilted fault block || rowspan = 3 | Tectonic; Normal fault, resulting from deformation by tectonic processes, forms all or part of the closure. || rowspan = 3 | Extensional; Fault, resulting from extensional deformation, forms all or part of the closure. || colspan = 2 | Rift basin | + | | rowspan = 11 | Fault traps || rowspan = 3 | Normal faults || rowspan = 3 | Tilted fault block || rowspan = 3 | Tectonic; Normal fault, resulting from [[deformation]] by tectonic processes, forms all or part of the closure. || rowspan = 3 | Extensional; Fault, resulting from extensional deformation, forms all or part of the closure. || colspan = 2 | Rift basin |
| |- | | |- |
| | colspan = 2 | Basin and range | | | colspan = 2 | Basin and range |
| |- | | |- |
− | | colspan = 2 | Growth fault | + | | colspan = 2 | [[Growth fault]] |
| |- | | |- |
| | rowspan = 3 | Reverse faults || rowspan = 3 | Thrust faults || rowspan = 3 | Tectonic; Thrust fault, resulting from tectonic deformation by tectonic processes, forms all or part of the closure. || rowspan = 3 | Compressional; Fault, resulting from tectonic compressional deformation, forms all or part of the closure. || colspan = 2 | Regional thrust belt | | | rowspan = 3 | Reverse faults || rowspan = 3 | Thrust faults || rowspan = 3 | Tectonic; Thrust fault, resulting from tectonic deformation by tectonic processes, forms all or part of the closure. || rowspan = 3 | Compressional; Fault, resulting from tectonic compressional deformation, forms all or part of the closure. || colspan = 2 | Regional thrust belt |
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| | Wrench faults || Subclass: Flower structures || Superfamily: Tectonic; Normal fault, resulting from tectonic deformation by tectonic processes, forms all or part of the closure. || Transpressional; Fault, resulting from tectonic transpressional deformation, forms all or part of the closure. || Regional wrench system || Inverted | | | Wrench faults || Subclass: Flower structures || Superfamily: Tectonic; Normal fault, resulting from tectonic deformation by tectonic processes, forms all or part of the closure. || Transpressional; Fault, resulting from tectonic transpressional deformation, forms all or part of the closure. || Regional wrench system || Inverted |
| |- | | |- |
− | | rowspan = 4 | Normal faults || rowspan = 4 | Nontectonic; Result from deformation by nontectonic processes such as uplift by intrusion or diapirism, differential compaction, salt withdrawal, salt solution, or meteoric impact. || colspan = 3 | Extensional; Fault, resulting from nontectonic extensional deformation, forms all or part of the closure. | + | | rowspan = 4 colspan = 2 | Normal faults || rowspan = 4 | Nontectonic; Result from deformation by nontectonic processes such as uplift by intrusion or diapirism, differential compaction, salt withdrawal, salt solution, or meteoric impact. || colspan = 3 | Extensional; Fault, resulting from nontectonic extensional deformation, forms all or part of the closure. |
| |- | | |- |
| | colspan = 3 | Family: Vertical uplift | | | colspan = 3 | Family: Vertical uplift |
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| | colspan = 2 | Subfamily: Salt withdrawal | | | colspan = 2 | Subfamily: Salt withdrawal |
| |} | | |} |
− |
| |
− | '''Regime:''' Fault traps
| |
− | :'''Class:''' Normal faults
| |
− | ::'''Subclass:''' Tilted fault block
| |
− | :::'''Superfamily:''' Tectonic
| |
− | :::Normal fault, resulting from deformation by tectonic processes, forms all or part of the closure.
| |
− | ::::'''Family:''' Extensional
| |
− | ::::Fault, resulting from extensional deformation, forms all or part of the closure.
| |
− | :::::'''Subfamily:''' Rift basin
| |
− | :::::'''Subfamily:''' Basin and range
| |
− | :::::'''Subfamily:''' Growth fault
| |
− | :'''Class:''' Reverse faults
| |
− | ::'''Subclass:''' Thrust faults
| |
− | :::'''Superfamily:''' Tectonic
| |
− | :::Thrust fault, resulting from tectonic deformation by tectonic processes, forms all or part of the closure.
| |
− | ::::'''Family:''' Compressional
| |
− | ::::Fault, resulting from tectonic compressional deformation, forms all or part of the closure.
| |
− | :::::'''Subfamily:''' Regional thrust belt
| |
− | :::::'''Subfamily:''' Foreland fold fault
| |
− | :::::'''Subfamily:''' Forearc basin
| |
− | :'''Class:''' Wrench faults
| |
− | ::'''Subclass:''' Flower structures
| |
− | :::'''Superfamily:''' Tectonic
| |
− | :::Normal fault, resulting from tectonic deformation by tectonic processes, forms all or part of the closure.
| |
− | ::::'''Family:''' Transpressional
| |
− | ::::Fault, resulting from tectonic transpressional deformation, forms all or part of the closure.
| |
− | :::::'''Subfamily:''' Regional wrench system
| |
− | ::::::'''Variety:''' Inverted
| |
− | :'''Class:''' Normal faults
| |
− | :::'''Superfamily:''' Nontectonic
| |
− | :::Result from deformation by nontectonic processes such as uplift by intrusion or diapirism, differential compaction, salt withdrawal, salt solution, or meteoric impact.
| |
− | ::::'''Family:''' Extensional
| |
− | ::::Fault, resulting from nontectonic extensional deformation, forms all or part of the closure.
| |
− | ::::'''Family:''' Vertical uplift
| |
− | ::::'''Family:''' Vertical subsidence
| |
− | :::::'''Subfamily:''' Salt solution
| |
− | :::::'''Subfamily:''' Salt withdrawal
| |
| | | |
| ==See also== | | ==See also== |
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| * [[Fracture traps]] | | * [[Fracture traps]] |
| * [[Fracture trap regime]] | | * [[Fracture trap regime]] |
| + | |
| + | ==References== |
| + | {{reflist}} |
| | | |
| ==External links== | | ==External links== |
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| [[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]] |
| + | [[Category:Treatise Handbook 3]] |