Early Cretaceous absolute geomagnetic paleointensities from Córdoba province (Argentina)

dc.creatorCejudo Ruiz, Ruben
dc.creatorGoguitchaichvili, Avto
dc.creatorGeuna, Silvana Evangelina
dc.creatorAlva-Valdivia, Luis M.
dc.creatorSolé, Jesus
dc.creatorMorales, Juan
dc.date.accessioned2019-07-01T19:34:04Z
dc.date.accessioned2022-10-15T02:48:40Z
dc.date.available2019-07-01T19:34:04Z
dc.date.available2022-10-15T02:48:40Z
dc.date.created2019-07-01T19:34:04Z
dc.date.issued2006-12
dc.identifierCejudo Ruiz, Ruben; Goguitchaichvili, Avto; Geuna, Silvana Evangelina; Alva-Valdivia, Luis M.; Solé, Jesus; et al.; Early Cretaceous absolute geomagnetic paleointensities from Córdoba province (Argentina); Springer Verlag Berlín; Earth Planets And Space; 58; 10; 12-2006; 1333-1339
dc.identifier1343-8832
dc.identifierhttp://hdl.handle.net/11336/78957
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4336896
dc.description.abstractWe present here new paleointensity and geochronology results from Early Cretaceous volcanic rocks of Sierra Chica de Cordoba (Argentina). The new K-Ar isotopic ages of 5 samples range from 136 to 122 Ma. Twenty five samples from 7 individual flows yielded acceptable paleointensity estimates. The mean paleointensity values per flow are ranging from 53.0±1.9 to 25.4±2.6 μT and the corresponding Virtual Dipole Moments (VDMs) are ranging from 9.3±1.3 to 4.6±0.5 (1022 Am2). This corresponds to the mean value of 7.3±1.7x1022 Am2, which is compatible to the present geomagnetic axial dipole. Currently available selected paleointensity data from 80 to 130 Ma suggest that geomagnetic field strength frequently fluctuated before and during the Cretaceous Normal Superchron while the magnetic polarity maintained stable. The mean paleointensities derived from Cordoba lavas agree remarkably well with those obtained from the Parana Magmatic Province (133-132 Ma). This reinforces the hypothesis about the unreliability of ‘Mesozoic Dipole Low'.
dc.languageeng
dc.publisherSpringer Verlag Berlín
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1186/BF03352629
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1186/BF03352629
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectEARLY CRETACEOUS
dc.subjectPALEOINTENSITY
dc.subjectROCK-MAGNETISM
dc.subjectSOUTH AMERICA
dc.titleEarly Cretaceous absolute geomagnetic paleointensities from Córdoba province (Argentina)
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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