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Shallow section with faulted clinoforms - offshore Namibia Scene

VSA Author: Rob Butler
Interpretations: 3
Date Created: 2010-04-22

The shallow (top 2 s TWT) part of CGGVeritas' line from the VERNOB-03 survey from offshore Namibia showing structure on the outer shelf.This image can be used as a class teaching exercise on seismic stratigraphy. See Julien Moreau's interpretation and related documents.



Interpretations related to this Scene

faulted clinoforms - offshore Namibia Interpretation

VSA Author: Rob Butler
Date Created: 2010-04-22

The stratal geometries on the shelf show progradational and aggradational geometry together with subtle slump scars. In 3D these mega forms probably trace lobes - hence the complex lap relationships. The stratal surfaces in the clinoforms (picked in blue) are cut by an array of moderately-dipping (once the excessive vertical exaggeration is removed) normal faults that do not continue ...

Seismic stratigraphy exercise Interpretation

VSA Author: Julien Moreau
Date Created: 2013-09-12

Correction of a seismic interpretation exercise I gave. The interpretation is uniquely based on reflection termination picking which indicate bounding surfaces. No model is involved. Colours between two successive bounding surfaces have no genetic meaning they only give a sort of chronology through the repetition of a colour cycle (blue, pink, green,yellow) . The objective of the exer...

Wheeler Diagram Exercise Interpretation

VSA Author: Julien Moreau
Organization: University of Copenhagen
Date Created: 2014-10-27

After the students have done the seismic stratigraphy of profile (former illustration), I have printed my correction of the profile on A0 paper. The students then cut out each sequence and organise them in a way that sequences do not overlap vertically. By doing so, a wheeler diagram is created which is a temporal and spacial representation of the filling of the basin. The students ca...



Details:

  • Scene Administrator:
    • Rob Butler
  • VSA Author:
    • Rob Butler

Geological Interpretation

Seismic Stratigraphy
Erosional truncation, Toplap, Downlap, Onlap

Depositional Architecture
Clinoform

Geological Context

Plate Settings and Margins
Passive

Tectonics
Gravity

Basin Setting
Passive Margin

Geographic Context

Physical Geography
Shelves

Political Geography
Namibia, Republic of

Geophysics

Survey Information
Marine, Multichannel 2D, ≤10, Migrated

Data Presentation
Vertical Scale - Time

Image Type
Vertical Profile