Flow directions and paleomagnetic study of rocks from the Azufre Volcano, Argentina.

dc.contributorCARLOS HERRERO BERVERA
dc.contributorPeter Walker
dc.creatorEDGARDO CAÑON TAPIA
dc.date1994
dc.date.accessioned2022-10-12T19:36:46Z
dc.date.available2022-10-12T19:36:46Z
dc.identifierhttp://cicese.repositorioinstitucional.mx/jspui/handle/1007/1682
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4118412
dc.description"Determination of the stable direction of magnetization was made on eight lava flows from the Azufre volcano, Southern Volcanic Zone of the Andes. From these eight paleomagnetic sites, only six independent samples of the geomagnetic field were identified. Combination of these with results of a work made by CREER and VALENCIO (1969) allowed a better determination of a geomagnetic pole for the Bruhnes chron in this region of the Andes than that previously calculated. The coordinates of the new pole are 87°N, 236°E, and have an α<sub>95</sub> region of confidence of 12°. Statistical comparison of directions of magnetization of groups of flows was used 1) to test the hypothesis of rapid extrusion of flows, and 2) to constrain the age of the lavas sampled in this work to more than 0.4 my. Finally, the utility of the anisotropy of magnetic susceptibility measurements on the determination of flow direction of lava flows was established despite the great scatter on the observations of multiple samples from the same unit. Criteria to determine the size of the region of confidence around the mean maximum susceptibility in order to accept or reject results were developed in analogy with those used in paleomagnetic studies."
dc.formatapplication/pdf
dc.languageeng
dc.publisherSociety of Geomagnetism and Earth, Planetary and Space Sciences
dc.relationinfo:eu-repo/semantics/altIdentifier/DOI/http://dx.doi.org/10.5636/jgg.46.143
dc.relationcitation:Cañón Tapia,E.,Herrero Bervera,E.,Walker,G.P.L.1994.Growth characteristics of Pleurotus ostreatus in bioreactors.Journal of Geomagnetism and Geoelectricity,46(2),143-159.doi:10.5636/jgg.46.143
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.sourceJournal of Geomagnetism and Geoelectricity, Vol. 42, No. 2, Págs. 143-159
dc.subjectinfo:eu-repo/classification/Administrador/Flow directions, Paleomagnetic Study, Azufre Volcano, Argentina
dc.subjectinfo:eu-repo/classification/cti/1
dc.subjectinfo:eu-repo/classification/cti/25
dc.subjectinfo:eu-repo/classification/cti/2506
dc.titleFlow directions and paleomagnetic study of rocks from the Azufre Volcano, Argentina.
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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