Boletín de la Sociedad Geológica Mexicana Volumen 67, núm. 2, 2015, p. 245-253 http://dx.doi.org/10.18268/BSGM2015v67n2a8

Análisis palinológico del Cenozoico de la cuenca de México: el registro polínico de los pozos Texcoco-I y San Lorenzo Tezonco

Socorro Lozano-García^1,*, Susana Sosa-Nájera¹

¹ Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, delegación Coyoacán, 04510, D.F., México.
^* This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

We present the palynological record of Texcoco-I (2065 m) and San Lorenzo Tezonco (2008 m) deep wells from the Basin of Mexico. The Pliocene-Pleistocene assemblages of both sequences are characterized by temperate taxa Pinus, Quercus, Liquidambar and Picea. Microfossils of Pediastrum and Botryococcus provide evidence that the basin hosted a lake. Although temperate taxa is present in the Oligocene Texcoco-I sediments the general pollen assemblage is distinct, with Bursera, Carya, Liquidambar and Myrtaceae. The absence of temperate elements along with the presence of anhydrite the late Eocene environment.

Keywords: Palynology, Cenozoic, lake sediments, Central Mexico.