Fig. 4From: Provenance of sediments from Barra del Tordo and Tesoro beaches, Tamaulipas State, northwestern Gulf of Mexicoa Upper continental crust (UCC)-normalized diagram for major element concentrations of the Barra del Tordo and Tesoro beach sediments; b UCC-normalized diagram for trace element concentrations of the Barra del Tordo and Tesoro beach sediments; c Chondrite-normalized REE patterns for the Barra del Tordo and Tesoro beach sediments. The UCC and chondrite values are from Taylor and McLennan (1985)Back to article page