Author(s):
Carvalho, Lina ; Figueira, Paula ; Monteiro, Rui J. R. ; Reis, Ana Teresa ; Almeida, Joana C. ; Catry, Teresa ; Lourenço, Pedro Miguel ; Catry, Paulo ; Barbosa, Castro ; Castro, Inês ; Pereira, Eduarda ; Pereira, Eduarda ; Granadeiro, José Pedro ; Vale, Carlos
Date: 2017
Persistent ID: http://hdl.handle.net/10400.12/5882
Origin: Repositório do ISPA - Instituto Universitário
Project/scholarship:
info:eu-repo/grantAgreement/FCT/5876/147268/PT;
info:eu-repo/grantAgreement/FCT/5876/147273/PT;
info:eu-repo/grantAgreement/FCT/5876/147332/PT;
info:eu-repo/grantAgreement/FCT/5876/147321/PT;
info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F84237%2F2012/PT;
Subject(s): Sediments; Bijagós – Guinea-Bissau; Elemental composition; Eu and Ce anomalies
Description
Sixty sediment samples from four sites in the Bijagós archipelago were characterized for fine fraction, loss on ignition, major, minor and trace elemental composition (Al, Fe, Ca, Mg, Ti, P, Zr, Mn, Cr, Sr, Ba, B, V, Li, Zn, Ni, Pb, As, Co, U, Cu, Cs and Cd), and the elements of the La–Lu series. Element concentrations were largely explained by the Al content and the proportion of fine fraction content, with the exception of Ca and Sr. Sediments showed enhanced Ti, U, Cr, As and Cd concentrations with respect to estimated upper crust values, most likely mirroring a regional signature. Rare earth elements were in deficit relatively to the North American Shale Composite (NASC), mainly in coarser material. No pronounced Ce-anomaly was observed, while Eu-anomalies were positive in most analyzed sediments.
FCT–Foundation for Science and Technology; European Regional Development Fund (ERDF); MAVA Foundation; IBAP (Guinea-Bissau);
