Neogene-Quaternary Continental Margin Volcanism Metepec, Puebla,
México 12-16 January 2004 - Gerardo J. Aguirre-Diaz - Centro de
Geociencas, Universidad Nacional Autónoma de México, Juriquilla,
México; - José Luis Macías and Claus Siebe - Instituto de
Geofisica, Universidad Nacional Autónoma de México, México D.F.,
México Grant Heiken, Freeland, Washington, USA |Conference
participants at Tlamacaz mountaineering lodge on the upper
slopes of Popocatépetl. Iztaccíhuatl volcano (5,272 m) in the
background. Click on photo for larger image.| The Mexican
volcanic belt crosses México from the Pacific to the Gulf of
Mexico and is composed of hundreds of Neogene-Quaternary
volcanoes, ranging from humble scoria cones to the great
composite cones of Popocatépetl and Citlaltépetl (Orizaba).
Holocene and Historic eruptions continue to affect the peoples
of México; for example, eruptions changed the course of history
between Classic and Post-Classic cultures when the valleys of
México and Puebla were subjected to tephra fa