Characterization of Baker Fjord region through its heavy metal content on sediments (Central Chilean Patagonia)

• Main Authors: Ramón Ahumada, Elizabeth González, Christian Díaz, Nelson Silva
• Format: Article
• Language: English
• Published: Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso 2015-07-01
• Series: Latin American Journal of Aquatic Research
• Subjects: metales pesados; sedimentos no contaminados; fiordos; Patagonia; Chile
• Online Access: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2015000300020&lng=en&tlng=en

The spatial distribution of heavy metals content (Ba, Cd, Cu, Pb, Sr and Zn) in sediments of the Baker Fjord and surrounding channels in the central region of the Chilean fjords (47°45'S, 48°15'S) is analyzed. The aim of the study was characterized the patterns of abundance and distribution of these metals in surface sediments. The area corresponds to a poorly studied zone with low human activity. Distribution patterns would be influenced by rainfall conditions (local erosion), fluvial (continental sediments carried by rivers), glacier (glacier flour) and estuarine circulation. Cluster analysis allows differentiation among the sampled sites and group with similar characteristics. Finally, the concentrations found were contrasted with average values of metamorphic rocks and show with some certainty that the values found for calendar for this area and the greatest concentrations are the result of natural enrichment.