Fig. 6From: Provenance of sediments from Barra del Tordo and Tesoro beaches, Tamaulipas State, northwestern Gulf of MexicoU–Pb concordia diagrams and histograms showing the relative age probability distribution of detrital zircon grains from samples PT1 (a and b) and PT19 (c and d) of the Tesoro beach sediments, northwestern Gulf of Mexico. n = Number of zircon grainsBack to article page