Resultados preliminares del estudio realizado en una secuencia de coladas volcánicas Plio-Cuaternarias en Georgiautilizando magnetismo de rocas, paleomagnetismo y paleointensidad

  1. A. Caccavari 1
  2. M. Calvo Rathert 2
  3. A. Gogichaishvili 1
  4. G. Vashakidze 3
  5. N. Vegas 4
  6. B. Aguilar 1
  1. 1 Universidad Nacional Autónoma de México
    info

    Universidad Nacional Autónoma de México

    Ciudad de México, México

    ROR https://ror.org/01tmp8f25

  2. 2 Universidad de Burgos
    info

    Universidad de Burgos

    Burgos, España

    ROR https://ror.org/049da5t36

  3. 3 Tbilisi State University
    info

    Tbilisi State University

    Tiflis, Georgia

    ROR https://ror.org/05fd1hd85

  4. 4 Universidad del País Vasco/Euskal Herriko Unibertsitatea
    info

    Universidad del País Vasco/Euskal Herriko Unibertsitatea

    Lejona, España

    ROR https://ror.org/000xsnr85

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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Any de publicació: 2012

Títol de l'exemplar: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Número: 13

Pàgines: 1208-1211

Tipus: Article

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Altres publicacions en: Geotemas (Madrid)

Resum

We present rock-magnetic, paleomagnetic and paleointensity results obtained on samples belonging to a pliocen sequence of 39 successive lava flows from Saro, Georgia. With an age of 2.2 Ma (Lebedev et al., 2008) Analysis of thermomagnetic curves allows to distinguish four types of samples: a) Type H samples with magnetite as the only carrier of remanence, reversible behavior; b) type H*, like H but with a less reversible behavior ; c) type L curves with a low Curie-temperature phase (TC =280ºC) and non reversible behavior. d) type F. Non reversible behavior and two ferromagnetic phase. Analysis of hysteresis parameters suggests that the grain size of most studied samples corresponds to pseudo single-domain particles. Paleomagnetic experiments reveal only a single paleomagnetic component with reverse polarity, D= 205.6°, I= -60.7°, (α 95= 2.0, k= 129.6) and the calculated paleomagnetic pole yields a longitude λ= 123.1 and a latitude 71.1° (α 95=2.8°, k=72.1). The angular distance between the Virtual Geomagnetic Pole (VGP) obtained in this work and the Apparent Polar Wander Path (APWP) by Besse and Courtillot (2002) for Europe for 0 Ma is 17º and 16.7º for a 5 Ma window. We also do some paleointensity experiments, the results are now under analysis.

Fuente de los datos: Dialnet