Abstract
In order to analyze the Galerazamba spit morphological evolution as well as its barrier systems classification; we analyzed us historical shoreline records and currents patterns according historical changes from 1948 until 2014. It was established that the first morphological shape corresponding the Magdalena river channeling in 1936 and the mud volcano eruption over the spit in 1938 is a Fly Spit. After the eruption, the lack of sediment in the system due to the river channeling was evident the sediment readjustment parallel to Galerazamba s shoreline, generating several sand barriers types over time due to littoral drift and local sediment supplies, moring towards its present morfology which corresponds to a closed sand bar called Bay-mouth Barrier.
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