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The description of the stratification found in the different parts of Cartagena de Indias Bay is presented by the analysis of thirteen sub-bottom transects made with a Stratabox 10 kHz sub-bottom profiler. There were zones with very hard superficial sediments that aloud little penetration in the external area off Bocagrande with layers of 10-12m of softer mud deposited over harder bases. Some deep structures are old coral reefs. Other transects present strata with steep slopes of semi-hard sediments implying old deposits handled by coastal dynamics different from the present. The southern sections show the sedimentary prism forms at the mouth of Canal del Dique in several directions.Topographic anomalies of the shelf seem to be inherited from a former coast line, controlled by structures in NNW direction that define the axes of the current bays, and for a megastructure possibly associated with Oca and Santa Marta fault systems, with an important role in the raising and evolution of the SNSM and the associate basins.

Geometría de los depósitos cuaternarios y actuales de la Bahía de Cartagena de Indias, Colombia