Salt sill deformation and its implications for subsalt exploration

Hodgkins, Margaret A.; O’Brien, Michael J.

doi:10.1190/1.1437042

Cited by 7 publications

(1 citation statement)

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“…The shifting location and shape of the mini-basins are controlled by the salt system evolving through time as well as sediment loading. Each loading event induces salt to move away from the load, creating accommodation space until the source layer is depleted (Hodgkins and O'brien, 1994). When salt is completely evacuated, a weld is created as supra-salt mini-basin sediments are grounded on sub-salt sediments.…”

Section: Mini-basinsmentioning

confidence: 99%

Emplacement and Evolution of Salt in the Alaminos Canyon Protraction Area, Gulf of Mexico

Decalf¹,

Lock-Williams²,

Weber³

et al. 2004

Salt Sediment Interactions and Hydrocarbon Prospectivity: Concepts, Applications, and Case Studies for the 21st Century: 24th A

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The Gulf of Mexico is one of the most prolific and challenging places in the world to explore for deepwater hydrocarbons. Success in deepwater exploration is contingent on knowledge of depositional systems as well as salt tectonic geology. Over the study area located in Alaminos Canyon, 3-D pre-stack depth imaging of seismic data provides definition of salt emplacement and evolution history. In this region, shallow allocthonous salt may be sourced directly from the Jurassic Louann layer. Emplacement of this salt occurred in a series of low angle and high angle surfaces toward the Sigsbee Escarpment. This basinward moving salt follows a salt nappe system evolution. The salt nappe progressively advances upsection and basinward over long distances from its feeders. The quality of the resulting depth migrated image allows description of prospect types in the sub-salt section. It also allows definition of the northeast termination of the Perdido fold belt and Sigsbee Escarpment in the study area.

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Section: Mini-basinsmentioning

confidence: 99%