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Geofísica internacional
versión On-line ISSN 2954-436Xversión impresa ISSN 0016-7169
Geofís. Intl vol.44 no.3 Ciudad de México jul./sep. 2005
Articles
Microwave paleointensity analysis of historic lavas from Paricutín volcano, México
1 Laboratorio de Paleomagnetismo y Geofísica Nuclear, Instituto de Geofísica, UNAM, Ciudad Universitaria, 04510 México, D.F., MÉXICO
2 Departamento de Recursos Naturales, Instituto de Geofísica, UNAM, Ciudad Universitaria, 04510 México, D.F., MÉXICO E-mail: avto@tonatiuh.igeofcu.unam.mx
We report a microwave paleointensity study of historic lavas from Paricutin volcano, erupted during the period between 1943 and 1948. Most samples are characterized by uni-vectorial orthogonal plots. Rock-magnetic and microscopy studies indicate pseudo-single-domain titanomagnetites as the remanence carriers. The microwave paleointensity technique was applied to selected samples using both Kono and Ueno (1977) and Coe et al. (1978) variants of the Thellier method. The samples yielded technically high quality paleointensity results, though show high within-flow dispersion and are significantly different from the expected value of 45mT. This is also seen in results using the Thellier method (Urrutia-Fucugauchi et al., 2004). Explanations for this behaviour are explored, with reference to other historic lava studies. The technically high quality of the results suggest there is no criteria that can distinguish between correct and erroneous paleointensity data.
KEY WORDS: Paleomagnetism; paleointensity; microwave technique
Reportamos el estudio de paleointensidad de lavas históricas del volcán Paricutín por el método de microondas, las cuales fueron eruptadas durante el período entre 1943 y 1948. Muchas de las muestras se caracterizan por presentar gráficas ortogonales univectoriales. Los estudios de magnetismo de rocas y microscopía indican titanomagnetitas de dominio seudo sencillo como los portadores de la remanencia. La técnica de microondas se aplicó a muestras seleccionadas usando variantes al método de Thellier de Kono y Ueno (1977) y de Coe, et al. (1978). Las muestras dieron resultados de paleointensidad de alta calidad técnica, no obstante mostraron alta dispersión en un mismo flujo siendo significativamente diferentes del valor esperado de 45 mT. Esto también se observó en los resultados obtenidos al aplicar el método de Thellier (Urrutia-Fucugauchi et al., 2004). Se exploraron las explicaciones a este comportamiento respecto a otros estudios en lavas históricas. La alta calidad técnica de los resultados sugiere que no hay criterios que puedan distinguir entre datos de paleointensidad correctos y erróneos.
PALABRAS CLAVE: Paleomagnetismo; paleointensidad; método de microondas
BIBLIOGRAPHY
AITKEN, M. J.; L. J. PESONEN and M. LEINO, 1991. The Thellier paleointensity technique: Minisamples versus standard size. J. Geomag. Geoelctr., 43, 325-331. [ Links ]
BÓHNEL, H.; J. MORALES; C. CABALLERO; L. ALVA; G. MCINTOSH; S. GONZÁLEZ and C. SHERWOOD, 1997. Variation of rock magnetic parameters and paleointensities over a single Holocene lava flow. J. Geomag. Geoelectr., 49, 523-542. [ Links ]
BIGGIN, A. J.; H. N. BÓHNEL and F. R. ZÚÑIGA, 2003. How many paleointensity determinations are required from a single lava flow to constitute a reliable average?, Geophys. Res. Lett., 30, DOI 10.1029/2003GL017146. [ Links ]
CALVO, M.; M. PRÉVOT; M. PERRIN and J. RIISAGER, 2002. Investigating the reasons for the failure of paleointensity experiments: A study on historical lava flows from Mt. Etna (Italy). Geophys. J. Int., 149, 44-63. [ Links ]
COE, R. S., 1967. The Determination of Paleo-Intensities of the Earth's Magnetic Field with Emphasis on Mechanisms which Could Cause Non-ideal Behaviour in Thellier's Method. J. Geomag. Geoelectr., 19, 157-179. [ Links ]
COE, R.; S. GROMMÉ and E. A. MANKINEN, 1978. Geomagnetic paleointensity from radiocarbon-dated flows on Hawaii and the question of the Pacific nondipole low. J. Geophys. Res., 83, 1740-1756. [ Links ]
COE, R. S.; J. RIISAGER; G. PLENIER; R. LEONHARDT and D. KRÁSA, 2004. Multidomain behavior during Thellier paleointensity experiments: results from the 1915 Mt. Lassen flow. Phys. Earth Plan. Int., 147, 141-153. [ Links ]
DAY, R.; M. FULLER and V. A. SCHMIDT, 1977. Hysteresis properties of titanomagnetites: Grain-size and compositional dependence. Phys. Earth Plan. Int ., 13, 260-267. [ Links ]
DODSON, M. H. and E. MCCLELLEND-BROWN, 1980. Magnetic blocking temperature of single-domain grains during slow cooling. J. Geophys. Res., 103, 30561-30574. [ Links ]
DUNLOP, D. and O. OZDEMIR, 1997. Rock-Magnetism, fundamentals and frontiers, Cambrige University Press, 573pp. [ Links ]
FOX, J. M. W. and M. J. AITKEN, 1980. Cooling rate dependence of thermoremanent magnetization. Nature, 283, 462-463. [ Links ]
FRIES, C., Jr., 1953. Volumes and weights of pyroclastic material, lava and water erupted by Paricutín volcano, Mexico. Trans. Am. Geophys. Union, 34, 603-616. [ Links ]
GOGUITCHAICHVILI, A.; M. PRÉVOT; J. M. DAUTRIA and M. BACIA, 1999. Thermo-detrital and crystallodetrital magnetizations in an Icelandic hyaloclastite. J. Geophys. Res., 104, 29219-29239. [ Links ]
GONZÁLEZ, S.; G. SHERWOOD; H. BÓHNEL and E. SCHNEPP, 1997. Palaeosecular variation in central Mexico over the last 30 000 years. Geophys. J. Int., 130, 201-219. [ Links ]
GRATTON, M. N.; E. HERRERO-BERVERA and J. SHAW, 2003. An absolute palaeointensity record from SOH1 lava core, Hawaii using the microwave technique, in prep. [ Links ]
GROMMÉ, C. S.; T. L. WRIGHT and D. L. PECK, 1969. Magnetic properties and oxidation of Iron-Titanium oxide minerals in Alae and Makaopuhi lava lakes, Hawaii. J. Geophys. Res., 74, 5277-5293. [ Links ]
HAGGERTY, S. E., 1976. Oxidation of opaque mineral oxides in basalts. In: Oxides Minerals, (Ed. D. Rumble) Mineral. Soc. Amer., Reviews in Mineralogy, 3, 300 pp. [ Links ]
HILL, M. J. and J. SHAW, 1999. Paleointensity results for historic lavas from Mt. Etna using microwave demagnetization/remagnetization in a modified Thellier type experiment. Geophys. J. Int., 139, 583-590. [ Links ]
HILL, M. J. and J. SHAW, 2000. Magnetic field intensity study of the 1960 Kilauea lava flow, Hawaii, using the microwave paleointensity technique. Geophys. J. Int., 142, 487-504. [ Links ]
HILL, M. J.; M. N. GRATTON and J. SHAW, 2002. A comparison of thermal and microwave palaeomagnetic techniques using lava containing laboratory induced remanence. Geophys. J. Int., 151, 157-163. [ Links ]
KOENISBERGER, J. G., 1938. Natural residual magnetism of eruptive rocks. Terr. Magn. Atmos. Electr., 43, 299- 320. [ Links ]
KONO, M. and N. UENO, 1977. Paleointensity determination by a modified Thellier method. Phys. Earth Planet. Int., 13, 305-315. [ Links ]
KÓRNER, U.; M. PRÉVOT and T. POIDRAS, 1998. CRM experiments and pseudo-paleointensity measurements on basaltic rocks with initially low Curie temperatures, Annales Geophysicae, Suppl. 1 to 16, C210. (Abstract) [ Links ]
KOSTEROV, A. and M. PRÉVOT, 1998. Possible mechanism causing failure of Thellier paleointensity experiments in some basalts. Geophys. J. Int., 134, 554-572. [ Links ]
LUHR, J. F. and T. SIMKIN, (Eds), 1993. Paricutin. The volcano born in a Mexican cornfield. Geoscience Press, Inc., Arizona, USA, 427 pp. [ Links ]
MCCLELLAND, E., 1996. Theory of CRM acquired by grain growth and its implication for TRM discrimination and paleointensity determination in igneous rocks. Geophys. J. Inter., 126, 271-280. [ Links ]
ORDÓÑEZ, E., 1943. El volcan de Paricutín, Com. Imp. Coord. Inv. Científ. Anuario, Mexico City, 241-300. [ Links ]
PRÉVOT, M.; R. S. MAINKINEN; S. GROMMÉ and A. LECAILLE, 1983. High paleointensity of the geomagnetic field from thermomagnetic studies on rift valley pillow basalts from the middle Atlantic ridge. J. Geoph. Res., 88, 2316-2326. [ Links ]
ROLPH, T. C., 1997. An investigation of magnetic variation within two recent lava flows. Geophys. J. Int., 130, 125-136. [ Links ]
SHAW, J.; D. WALTON; S. YANG; T. C. ROLPH and J. A. SHARE, 1996. Microwave archeointensities on Peruvian ceramics. Geophys. J. Int., 124, 241-244. [ Links ]
SEGERSTROM, K., 1965. Paricutin, 1965 - aftermath of eruption. US Geological Survey Prof. Paper, 550-C, 93-101. [ Links ]
TAUXE, L.; T. A. T. MULLENDER and T. PICK, 1996. Potbellies, wasp-waists and superparamagnetism in magnetic hysteresis. J. Geophys. Res., 95, 12337-12350. [ Links ]
THELLIER, E. and O. THELLIER, 1959. Sur l'intensité du champ magnétique terrestre dans le passé historique et géologique. Ann. Géophysique. 15, 285-376. [ Links ]
WALTON, D., J. SHAW, J. SHARE and J. HAKES, 1993. Microwave magnetization. Geophys. Res. Lett., 20, 109-111. [ Links ]
WILCOX, R. E., 1954. Petrology of Paricutín volcano, Mexico. U.S. Geol. Surv. Bull., 965C, 281-353. [ Links ]
URRUTIA-FUCUGAUCHI, J., L. ALVA-VALDIVIA, A. GOGUITCHAICHVILI, M. RIVAS and J. MORALES, 2004. Paleomagnetic, rock-magnetic and microscopy studies of historic lava flows from Paricutín volcano. J. Geophys. Int., 156, 431-442. [ Links ]
Received: June 24, 2004; Accepted: December 07, 2004
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