Reassessment of the eruptive chronology of El Metate shield volcano (central-western Mexico) based on a comprehensive rock-magnetic, paleomagnetic and multi-approach paleointensity survey
作者: Nayeli Pérez-RodríguezJuan MoralesMarie-Noëlle GuilbaudAvto GoguitchaichviliRubén Cejudo-RuizMaría del Sol Hernández-Bernal
作者单位: 1Posgrado en Ciencias de la Tierra, UNAM, Unidad Michoacán, Campus Morelia, Mexico
2Laboratorio Interinstitucional de Magnetismo Natural (LIMNA) & Servicio Arqueomagnético Nacional (SAN), Instituto de Geofísica, UNAM, Unidad Michoacán, Campus Morelia, Mexico
3Departamento de Vulcanología, Instituto de Geofísica, UNAM, Ciudad Universitaria, Ciudad de México, Mexico
4Laboratorio Universitario Geofísica Ambiental (LUGA), Instituto de Geofísica, UNAM, Unidad Michoacán, Campus Morelia, Mexico
5Escuela Nacional de Estudios Superiores (ENES), Unidad Morelia, UNAM, Campus Morelia, Mich, Mexico
刊名: Quaternary Geochronology, 2020, Vol.55
来源数据库: Elsevier Journal
DOI: 10.1016/j.quageo.2019.101031
关键词: Holocene paleomagnetismPaleomagnetic datingMexican shield volcanoMichoacán-Guanajuato Volcanic Field
英文摘要: Abstract(#br)We study seven out of the thirteen lava flows associated to El Metate shield volcano using paleomagnetic, absolute intensity and rock-magnetic experiments. Characteristic paleomagnetic directions were successfully determined from most of the flows. A combined mean direction of D = 346.4° and I = 32.1° (N = 34, R = 33.73, k = 121.74, α 95 = 2.2) was obtained for the early flows (Flow 1 − Flow 3). Flow 6a (a flow from the late emplacement stage) yielded a statistically distinguishable mean paleomagnetic direction of D = 359.2° and I = 29.6° (N = 9, R = 8.97, k = 294.6, α 95 = 3.0).(#br)Furthermore, the significant between-flow variation of absolute paleointensity values obtained using two different methodologies, which resembles the trend followed by that of the global model...
全文获取路径: Elsevier  (合作)
影响因子:4.015 (2012)

  • eruptive 火成的
  • comprehensive 全面
  • central 中心的
  • magnetic 磁的
  • shield 地盾
  • western 谓的
  • survey 
  • volcano 火山
  • chronology 年代学
  • based 基于