ARTÍCULO

Late Cretaceous to Oligocene overlapping plutonic magmatism episodes in the eastern Mesa Central province of Mexico,

Beatriz A. Díaz-Bravo, José R. Barboza-Gudiño, Carlos Ortega-Obregón & Miguel Morales-Gámez
International Geology Review, DOI:10.1080/00206814.2021.1871866, 2021.

ABSTRACT:

Several plutonic bodies are distributed along the northern and eastern margins of the Mesa Central province, intruding mainly clastic and carbonate sedimentary sequences from the Triassic and Cretaceous. In this work, U-Pb ages in zircon and apatite have been obtained using the LA-ICPMS technique in samples from six of these plutons and some possibly related volcanic rocks. In general, intrusive rocks are porphyritic, suggesting a elatively shallow intrusion and are mostly monzogranite to quartz-monzodiorite in composition, displaying biotite and amphibole. According to the geochronological results, the plutonic rocks can be divided into two groups; a group that varies in age from Campanian-Maastrichtian limit up to Paleocene, and a second group that essentially corresponds to the Oligocene, specifically the Rupelian.