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Post-avulsion evolution Regional Project

VSA Author: Andrea Ortiz Karpf
Scenes: 4
Interpretations: 0
Date Created: 2015-03-20

Seismic cross-section showing the deposits (units F and G) resulting from the avulsion of the channel-complex in unit E. See the related scenes for the 3D relationships of the units.



Scenes related to this Regional Project

Stage 1 Scene

VSA Author: Andrea Ortiz Karpf
Interpretations: 0
Date Created: 2015-03-20

Perspective view of a combined variance and amplitude extraction on the first post-avulsion reflector, overlain on a variance extraction at the MTC top. The yellow line indicates the location of the cross-section. The amplitudes are erratically distributed with a small cluster of higher amplitudes at the toe of the levee, outboard of an underlying megaclast. A more detailed explanatio...

Stage 2 Scene

VSA Author: Andrea Ortiz Karpf
Interpretations: 0
Date Created: 2015-03-20

Perspective view of a combined variance and amplitude extraction on the second post-avulsion reflector, overlain on a variance extraction at the MTC top. The amplitudes are channelized and terminate downdip in high-amplitude lobes. There is a persistent concentration of high amplitudes at the toe of the levee, outboard of an underlying megaclast. The extension of the lobes is limited ...

Stage 3- Top of the avulsion splay package Scene

VSA Author: Andrea Ortiz Karpf
Interpretations: 0
Date Created: 2015-03-20

Perspective view of a combined variance and amplitude extraction at the top of the post-avulsion deposits, overlain on a variance extraction at the MTC top. The amplitudes are channelized and terminate downdip in high-amplitude lobes. The extension of the lobes is limited by megaclasts. A more detailed explanation can be found in Ortiz-Karpf et al (2015). The link to the paper can be...

Stage 4- Post avulsion channel Scene

VSA Author: Andrea Ortiz Karpf
Interpretations: 0
Date Created: 2015-03-20

Perspective view of a combined variance and amplitude extraction at the base of the post-avulsion channel, overlain on a variance extraction at the MTC top. Following the avulsion a new channel conduit evolved. Its geometry and trajectory is affected by the underlying megaclasts. A more detailed explanation can be found in Ortiz-Karpf et al (2015). The link to the paper can be found i...



Details:

  • Regional Project Administrator:
    • Andrea Ortiz Karpf
  • VSA Author:
    • Andrea Ortiz Karpf

Geological Interpretation

Tectonostratigraphic Style
Post-tectonic

Seismic Stratigraphy
Erosional truncation, Downlap, Onlap

Depositional Architecture
Channel / Channel Levee, Sheet deposit

Depositional Environment
Upper

Depositional Processes
Turbidites, Mass Wasting and Transport

Sediment Composition
Siliciclastics

Age of Strata
Quaternary

Geological Context

Plate Settings and Margins
Subduction Zone

Tectonics
Plate-driven

Basin Setting
Subduction Accretion

Geographic Context

Physical Geography
Oceans

Political Geography
Colombia, Republic of

Geophysics

Survey Information
Marine, ≤4, Zero Phase, 3D, Migrated

Data Presentation
Vertical Scale - Depth

Image Type
Vertical Profile