Annotated record of the detailed examination of Mn deposits from DSDP Site 86, Leg 10 (Cores 86-8, 86-9)

The origin of the Campeche Escarpment in the Gulf of Mexico has been attributed to several causes. Some suggest that the scarp represents a fault scarp, others suggest that its origin is a function of upbuilding and outbuilding likened, in some cases, to that of delta building. Still others suggest that the scarp represents the detrital accumulation seaward of a barrier or reef complex. In order to clarify these possible interpretations, Site 86 was located on a bench at a depth of 780 fathoms in the vicinity of the Campeche Escarpment.