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Main Author:	Avto Goguitchaichvili
Format:	Artículo científico
Language:	en
Published:	Universidad Nacional Autónoma de México 2001
Subjects:	Ciencias de la Tierra low Rock magnetism domain structure temperature demagnetization
Online Access:	https://www.redalyc.org/articulo.oa?id=56840405
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Low-temperature demagnetization of volcanic rocks containing multi-domain magnetic grains: implications for the Thellier paleointensity determination Avto Goguitchaichvili Ana María Soler Luis Alva Valdivia Juan Morales Ciencias de la Tierra low Rock magnetism domain structure temperature demagnetization Thirteen samples of volcanic rocks from Caucasus, Iceland and Philippines were subjected to low-temperature treatment inorder to remove the part of remanent magnetization carried by multi-domain grains. Ten to 40% of multi-domain partial thermoremanencewere removed, which may help to increase the success of paleointensity experiments. A sample from the 1991 eruptionof Pinatubo volcano shows a total self-reversal due to ilmeno-hematites and partial self-reversal between 500° and 575 °C due totitano-magnetites. Low temperature demagnetization applied to self-reversed remanence suggest that the high-temperature peakis almost suppressed by this treatment. 2001 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56840405 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.4 Vol.40

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