HR: 0800h
AN: GP41C-01 [Abstracts]
TI: A New Archeomagnetic Master Curve for Mesoamerica
AU: * Soler-Arechalde, A M
EM: anesoler@geofisica.unam.mx
AF: Universidad Nacional Autonoma de Mexico, Laboratorio de Paleomagnetismo, Instituto de
Geofisica, Ciudad Universitaria, Col. Coyoacan, Del. Coyoacan, Mexico, DF 04150, Mexico
AU: Gogichaishvili, A
EM: avto@geofisica.unam.mx
AF: Universidad Nacional Autonoma de Mexico, Laboratorio de Paleomagnetismo, Instituto de
Geofisica, Ciudad Universitaria, Col. Coyoacan, Del. Coyoacan, Mexico, DF 04150, Mexico
AU: Caballero-Miranda, C I
EM: cecilia@geofisica.unam.mx
AF: Universidad Nacional Autonoma de Mexico, Laboratorio de Paleomagnetismo, Instituto de
Geofisica, Ciudad Universitaria, Col. Coyoacan, Del. Coyoacan, Mexico, DF 04150, Mexico
AU: Urrutia-Fucugauchi, J H
EM: juf@geofisica.unam.mx
AF: Universidad Nacional Autonoma de Mexico, Laboratorio de Paleomagnetismo, Instituto de
Geofisica, Ciudad Universitaria, Col. Coyoacan, Del. Coyoacan, Mexico, DF 04150, Mexico
AB:
A new archeomagnetic reference curve contains all available and updated results reported since early 70th and
27 new archaeomagnetic directions obtained during last six years. The most of samples are taken from the
burned floors and walls. In some case, lime plasters are also used. The age interval covers from 100 BC to
present. Alternating field demagnetization were carried out to obtain the directions of primary remanence.
Pseudo single grain size titanomagnetite seems to be main magnetic carrier as deduced from rock-magnetic
experiments.
The active collaboration with the archaeologists proved to be fundamental to better constrain the age of
archeological events.
DE: 1503 Archeomagnetism
DE: 1560 Time variations: secular and longer
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2007 Joint Assembly