Topography of the Gulf of Mexico

Bathymetric Provinces of the Gulf

The Gulf of Mexico (~1.6M km², max depth ~4,384 m) comprises distinct geomorphic zones:

• Sigsbee Deep / Abyssal Plain – Central-western basin, ultra-flat, sediment-covered.
• Sigsbee Escarpment – Steep slope marking the plain's eastern edge; salt diapirs, minibasins.
• Campeche Bank – Wide, shallow (< 100 m) carbonate platform off Yucatán; oil/gas fields.
• Florida Platform / West Florida Shelf – Shallow carbonate ramp; coral reefs (Dry Tortugas, Florida Keys); tourism.
• Yucatán Platform – Southern shallow shelf; cenotes, Mayan ruins coastal.
• Mississippi Canyon / Fan – Submarine canyon and massive sediment fan from Mississippi River.
• Continental Shelves & Slopes – Narrow off Texas/Mexico; broad off Florida/Yucatán.

Salt tectonics (Jurassic Louann Salt) create domes, canopies, and minibasins throughout, influencing hydrocarbon traps and seafloor morphology.