Coasts are natural dynamic systems that are constantly changing. Several factors, such as sea level change, sediment availability and coastal processes strongly influence the evolution of the coastal landscape. However, the tectonic setting of the coast and the rate of sea level rise can also be important factors to consider. Coastal landforms are a consequence of the simultaneous operation of erosion, transportation and deposition processes and have evolved over a geologically short time, with several of them being almost exclusively the result of the action of ocean waves. The world's most spectacular and dramatic erosional landforms are due to wave action, whereas the reduction of wave energy created deposition landforms. This paper presents an analysis of the coastal landforms caused by deposition and erosion along the shoreline in the sector between Punta Brava and Punta Betín, Santa Marta region, Colombian Caribbean. On the other hand, it is a contribution to the geological knowledge of the Geotectonic Province of Santa Marta and emerges as an alternative solution to various problems. It also promotes research on this region regarding other factors such as the increasing marine activity, population in coastal areas, development of tourism, as well as a series of geological evolutionary processes that reflect in coastal morphology. Coastal landforms are valuable environmental, aesthetic, and recreational resources that are subject to natural processes as well as to the effects of human activities. The results of this study can provide a sound basis for sustainable planning and management of the territory. © 2016. Acad. Colomb. Cienc. Ex. Fis. Nat. Key words: Coastal landforms; Santa Marta; Geotectonic province; Colombian Caribbean; Evolutionary processes.Geoformas costeras causadas por depositación y erosión a lo largo de la línea costera entre Punta Brava y Punta Betín, Santa Marta, Caribe Colombiano ResumenLas costas son sistemas naturales dinámicos que cambian constantemente. La evolución del paisaje costero está fuertemente influenciada por varios factores, tales como el cambio del nivel del mar, la disponibilidad de sedimento y los procesos costeros. Sin embargo, la configuración tectónica de la costa y la tasa de aumento del nivel del mar pueden ser también factores importantes a tener en cuenta. Las geoformas costeras son una consecuencia de la operación simultánea de procesos de erosión, transporte y deposición y han evolucionado durante un periodo de tiempo geológicamente corto; varios de dichos procesos han sido el resultado casi exclusivo de la acción de las olas del mar. Las geoformas costeras de erosión más espectaculares y dramáticas del mundo se deben a la acción del oleaje, mientras que las formas deposicionales se producen por la reducción de la energía de las olas. En este trabajo se presenta un análisis de las geoformas costeras entre Punta Brava y Punta Betín, en Santa Marta, Caribe colombiano. Por otra parte, es una contribución al conocimiento geológico de la Provincia Geotectó...
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