Journal
JOURNAL OF THE GEOLOGICAL SOCIETY
Volume 168, Issue 3, Pages 625-628Publisher
GEOLOGICAL SOC PUBL HOUSE
DOI: 10.1144/0016-76492010-177
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- BHPBilliton
- BP
- BP, Chevron
- ConocoPhillips
- ExxonMobil
- Maersk Oil
- Murphy
- Petrobras
- Shell
- Statoil
- Total
- VNG Norge
- Woodside
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Two seismic-scale submarine channel-levee systems exposed in the Karoo Basin, South Africa provide insights into slope conduit evolution. Component channel fills in a levee-confined channel system (Unit C) and an entrenched channel system (Unit D) follow common stacking patterns; initial horizontal stacking (lateral migration) is followed by vertical stacking (aggradation). This architecture is a response to an equilibrium profile shift from low accommodation (slope degradation, composite erosion surface formation, external levee development, sediment bypass) through at-grade conditions (horizontal stacking and widening) to high accommodation (slope aggradation, vertical stacking, internal levee development). This architecture is likely common to other channel-levee systems.
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