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Line 43: − + − + − − |- − | <th align="center"> If</th> − | <th align="center"> Then...</th> − |- − | It is characterized by regional onlap above and truncation below − | It is probably a sequence boundary − |- − | It is characterized by regional downlap − | It is most likely a downlap surface Line 87:
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Line 96: − Locating reflection termination is a matter of finding the patterns described in the table above. The figure below shows these patterns and the associated discontinuity surfaces. HST is highstand systems tract, LST is lowstand systems tract, and TST is transgressive systems tract. − +
Seismic sequence analysis (view source)
Revision as of 14:48, 23 January 2014
, 14:48, 23 January 2014rowspan and table junk
| 6
| 6
| Categorize each discontinuity.
| Categorize each discontinuity.
* '''If''' it is characterized by regional onlap above and truncation below '''then''' it is probably a sequence boundary
* <table-wrap id="ch21utbl8a" position="float"> <table frame="hsides"> <colgroup> <col align="left"></col> <col align="left"></col> </colgroup> <thead> <tr> <th align="center"> If </th> <th align="center"> Then... </th> </tr> </thead> <tbody> <tr> <td align="left"> It is characterized by regional onlap above and truncation below It is probably a sequence boundary </td></tr> <tr> It is characterized by regional downlap It is most likely a downlap surface </tr> </tbody> </table> </table-wrap>
* '''If''' it is characterized by regional downlap '''then''' it is most likely a downlap surface
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|}
! Associated discontinuity
! Associated discontinuity
|-
|-
| Above a discontinuity
| rowspan=2 | Above a discontinuity
| Onlap
| Onlap
| Sequence boundary (unconformity)
| Sequence boundary (unconformity)
| Downlap surface (condensed section)
| Downlap surface (condensed section)
|-
|-
| Below a discontinuity
| rowspan=3 | Below a discontinuity
| Truncation
| Truncation
| Sequence boundary
| Sequence boundary
==Locating reflection terminations==
==Locating reflection terminations==
[[file:exploring-for-stratigraphic-traps_fig21-18.png|thumb|{{figure number|21-18}}.]]
[[file:exploring-for-stratigraphic-traps_fig21-18.png|thumb|{{figure number|21-18}}.]]
Locating reflection termination is a matter of finding the patterns described in the table above. The figure shows these patterns and the associated discontinuity surfaces. HST is highstand systems tract, LST is lowstand systems tract, and TST is transgressive systems tract.
==See also==
==See also==