“…Studies at the Panama Isthmus in the Gulf of Urabá, where a narrow (130-km) strip of land separates the Atlantic and Pacific oceans, have been restricted either to surface circulation in the Recent epoch or anthropic effects on sediment yield and dispersion, as well as on benthic fauna (Álvarez and Bernal, 2007;Andrade and Barton, 2000;Andrade, Barton, and Mooers, 2003;Blanco, 2009;Correa, Alcá ntara-Carrió, and Gonzá lez, 2005;Gómez and Bernal, 2013;Montoya, 2010;Restrepo and Kjerfve, 2004;Restrepo et al, 2006;Vann, 1959). Moreover, there is little research on differentiating the effects of anthropic activities from natural variability on sedimentation through the late Holocene (Ospina, Palacio, and Vásquez, 2014;Rúa, Liebezeit, and Palacio, 2014).…”