article
Is there a grenvillian basement in the Guerrero-Morelos platform of Mexico?
Registro en:
G. P. R. LEVRESSE, J. TRITLLA I CAMBRA, E. DELOULE, P. J. PINTO LINARES. Is there a Grenvillian basement in the Guerrero-Morelos Platform of Mexico?. Geologica Acta, Vol.5, Nº 2, 2007, 167-175,
Autor
Gilles Levresse
Pinto Linares, Porfirio Julio
Resumen
"In the Guerrero-Morelos platform (Guerrero State, Mexico) the adakitic rocks of Early Tertiary age contain abundant hornblende-rich tonalite xenoliths. Zircon crystals have been concentrated from both adakites and xenoliths, and dated using in-situ U-Pb ion microprobe analyses. These analyses indicate the presence of inherited Grenvillian and early Triassic/late Permian crust ages, as well as a Paleocene age related with the adakite rock intrusion. This range of inherited ages is reported for the first time in the Guerrero-Morelos platform, suggesting that a continous Grenvillian crust exists between the Oaxacan complex,to the East, and the Guerrero-Morelos platform."