SINGLE-GRAIN APATITE GEOCHEMISTRY OF PERMIAN-TRIASSIC GRANITOIDS AND MESOZOIC AND EOCENE SANDSTONES FROM CHIAPAS, SOUTHEAST MEXICO: IMPLICATIONS FOR SEDIMENT PROVENANCE Article Abdullin F., Solé J., Solari L., Shchepetilnikova V., Meneses-Rocha J.J., Pavlinova N., Rodríguez-Trejo A. International Geology Review. Vol. 58. 2016. P. 1132-1157