Impact of terrestrial mining and intensive agriculture in pollution of estuarine surface sediments: Spatial distribution of trace metals in the Gulf of Urabá, Colombia - Toro, Pedro Pablo Vallejo T; Bedoya, Luis Fernando Vásquez; Alcántara-Carrió, Javier; Franco, Gladys Rocío Bernal; Correa, Iván Doría (Marine Pollution Bulletin, 2016)