The Geology of Iztaccíhuatl Volcano and Adjacent Areas of The Sierra Nevada and Valley of Mexico

Palaeomagnetism of Late Miocene to Quaternary volcanics from the eastern segment of the Trans-Mexican Volcanic Belt

“…The substructures of these volcanoes are composed of relatively large volumes of two pyroxene andesites overlain by more viscous daci tic lavas of the modern cones. Nixon (1989) describes the volcanic evolution of Iztaccihuatl and the northern Sierra Nevada, From the north ern fl anks of Sierra Nevada (as far as the highway linking Mexico City and Puebla), the Sierra de Rio Frio continues northwards towards Pachuca.…”

The deglaciation of the mountains of Mexico and Central America

“…80 ka (ka = thousands of years before present) (Nixon 1989), whereas the late Pleistocene and Holocene glacial record is well preserved (White, 1962(White, , 1986Heine, 1975Heine, , 1988Heine, , 1994. It is indeed the longest and best dated record of glaciation for central Mexico, supported by tephrostratigraphy, 14 C dating and over 100 cosmogenic 36 Cl surface exposure ages (Vázquez-Selem, 2000;Vázquez-Selem and Heine, 2011).…”

Edad, dinámica geomorfológica y tipología de barrancas en el sector norte del volcán Popocatépetl, México

“…Su origen y desarrollo se remontan al emplazamiento de un flujo de lava emanado de una fisura (dacita Buenavista de Nixon, 1989), que rellenó parcialmente una barranca excavada en depósitos Figura 4 Cabecera del segundo afluente de la barranca Pelagallinas. Nótese las condiciones de estabilidad geomorfológica de hace al menos 108 años.…”