Recently collected seismic reflection profiles reveal numerous emerged and buried diapiric structures along the Campeche Shelf and slope, south of 20° N. latitude. Slope diapirs have steep sides, relatively flat tops, and a subsurface reflector which may be an expression of caprock. Shelf diapirs are buried structures characterized by uniformly stratified sediments trapped between rising intrusives or displaced by numerous high-angle faults.

The limited east-west distribution and the lack of magnetic signature suggest that Campeche Sheli and slope diapirs are salt structures co-linear with previously mapped salt domes in the Tabasco-Campeche Basin and the Sigsbee Knolls.

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