Changes

{| class = "wikitable"

{| class = "wikitable"

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! Classification level

! Classification level || Basis || Function/Definition

! Basis

! Function/Definition

|-

|-

| System

| System || Controlling geologic element || Dominant control of the trap—structural, stratigraphic, or fluidic.

| Controlling geologic element

| Dominant control of the trap—structural, stratigraphic, or fluidic.

|-

|-

| Regime

| Regime || Process || The dominant way of forming part or all of the trap [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=closure closure]. If the trap is structural, was the closure formed by folding, faulting, or fracturing? If the trap is stratigraphic, was the closure formed by depositional, erosional, or diagenetic processes? If the trap is fluidic, was closure formed by pressure, temperature, or chemical processes?

| Process

| The dominant way of forming part or all of the trap [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=closure closure]. If the trap is structural, was the closure formed by folding, faulting, or fracturing? If the trap is stratigraphic, was the closure formed by depositional, erosional, or diagenetic processes? If the trap is fluidic, was closure formed by pressure, temperature, or chemical processes?

|-

|-

| Class

| Class || Geometry and/or composition

| Geometry and/or composition

|

|

*  Geometry—the external shape and size of the trap; may also include geometry of internal trap elements.  

*  Geometry—the external shape and size of the trap; may also include geometry of internal trap elements.  

*  Composition—the makeup of the [[reservoir]], [[seal]], or fluid that creates or defines the trap boundaries.

*  Composition—the makeup of the [[reservoir]], [[seal]], or fluid that creates or defines the trap boundaries.

|-

|-

| Family

| Family || Genesis || The way all or part of the trap closure came into being. For example, for an isolated marine carbonate trap, was the closure formed because of the reservoir and seal facies relationships of a reef, an oolite bar, or a tidal channel?

| Genesis

| The way all or part of the trap closure came into being. For example, for an isolated marine carbonate trap, was the closure formed because of the reservoir and seal facies relationships of a reef, an oolite bar, or a tidal channel?

|}

|}

 

==Sublevels==

==Sublevels==

Using one term to classify traps geometrically, compositionally, or genetically is not always adequate. To solve this problem, intermediate groupings such as superfamilies or superclasses can be added where necessary. Trap classes can be subdivided into subclasses and styles if needed, and trap families can be subdivided into subfamilies and varieties. These extra levels allow a fuller description of traps.

Using one term to classify traps geometrically, compositionally, or genetically is not always adequate. To solve this problem, intermediate groupings such as superfamilies or superclasses can be added where necessary. Trap classes can be subdivided into subclasses and styles if needed, and trap families can be subdivided into subfamilies and varieties. These extra levels allow a fuller description of traps.