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Boletín de la Sociedad Geológica Mexicana
versión impresa ISSN 1405-3322
Resumen
CIFUENTES-NAVA, Gerardo et al. Full vector magnetic dating of some pyroclastic rocks associated to the Colima volcano, western Mexico. Bol. Soc. Geol. Mex [online]. 2017, vol.69, n.3, pp.577-590. ISSN 1405-3322. https://doi.org/10.18268/bsgm2017v69n3a4.
A combined rock-magnetic and paleomagnetic researches were carried out on some pyroclastic rocks and pre-Columbian pottery fragments associated to the Colima Volcanic Complex. A full battery of magnetic measurements was performed in order to estimate magnetic mineralogy and to determine both the directions and absolute intensities of the characteristic remanent magnetization. In this paper we report absolute age determination using magnetic dating for two volcanic eruptions associated to the Colima volcano (Volcán de Fuego). The geomagnetic field prediction model SHA. DIF.14K, based on full vector (declination, inclination and absolute paleointensity), was used for first time in pyroclastic flows deposits and intercalated potteries. The results obtained agree reasonably well with available radiometric (C14) data, them provide a more accurate age determination of the cooling moment for the lava flows.
Palabras llave : Magnetic dating; Colima volcano; Pyroclastic lava; pre-hispanic pottery; Trans-Mexican Volcanic Belt.