Multispecimen paleointensity determination from Cretaceous Caribbean Igneous Province

  1. K.L. Kapper 1
  2. J. Morales 1
  3. A. Gogichaishvili 1
  4. V. Mejia 2
  5. M. Calvo-Rathert 3
  6. A. Nivia Guevara 4
  1. 1 Universidad de Morelia
    info

    Universidad de Morelia

    Morelia, México

    ROR https://ror.org/00tnb2p82

  2. 2 Universidad Nacional de Colombia
    info

    Universidad Nacional de Colombia

    Bogotá, Colombia

    ROR https://ror.org/059yx9a68

  3. 3 Universidad de Burgos
    info

    Universidad de Burgos

    Burgos, España

    ROR https://ror.org/049da5t36

  4. 4 Servicio Geológico Colombiano
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Journal:
Latinmag Letters

ISSN: 2007-9656

Year of publication: 2016

Volume: 6

Issue: C09

Pages: 1-5

Type: Article

GOOGLE SCHOLAR

More publications in: Latinmag Letters

Abstract

We report paleomagnetic results from Colombia for the Cretaceous. Samples from 15 sites north of Caliwere related to age determinations of 92.5 ± 1.1 Ma from close localities. This age lies in the CretaceousNormal Superchron and is of special interest due to its long period of normal polarity and due to its largeand contradictory range of paleointensity values. From our directional investigation we obtained a VirtualGeomagnetic Pole (VGP) with a paleolongitude, Plon: 90.1°, a paleolatitude, Plat: 73.7° and a confidenceinterval α95: 20.1°. The latitude coincides very well with the paleolatitude from a similar age from NorthAmerica reported by Besse and Courtillot (2002). The multispecimen protocol provided six out of tensuccessful paleointensity determinations, which are equivalent to a Virtual Dipole Moment (VDM) of 2.3 x10-22 Am2 on average. This value is in good agreement with high quality data reported in Tauxe et al. (2013).