Fig. 2From: Provenance of sediments from Barra del Tordo and Tesoro beaches, Tamaulipas State, northwestern Gulf of MexicoSEM–EDS spectrum for the a–c Barra del Tordo and d–f Tesoro beach sediments, northwestern Gulf of Mexico. a Quartz spectrum; b Ilmenite spectrum; c Magnetite spectrum; d Titanite spectrum; e Zircon spectrum; and f Anorthite spectrumBack to article page