Electrical and thermal anomalies in the central andean subduction zone

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An enhancement of the electrical conductivity in the upper layers in the subduction zones of southern Peru and northern Argentina is found by analyzing the solar quiet geomagnetic variations. This feature appears in a zone associated with large subduction angles. In this region high values of heat f...

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Detalles Bibliográficos
Autor principal: Favetto, Alicia Beatriz
Otros Autores: Martinelli, P., Osella, A.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Birkhauser Verlag AG 1997
Materias:
SOUTH AMERICA, ANDES
Acceso en línea:Registro en Scopus
DOI
Handle
Registro en la Biblioteca Digital
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Favetto, Alicia Beatriz 
245 1 0 |a Electrical and thermal anomalies in the central andean subduction zone 
260 |b Birkhauser Verlag AG  |c 1997 
270 1 0 |m Favetto, A.; Dep. de Fis.-Fac. Cs. Exactas, Universidad de Buenos Aires, Ciudad Universitaria, Pab 1, 1428 Buenos Aires, Argentina 
504 |a Allmendinger, R., Figueroa, D., Snyder, E., Beer, J., Mpodozis, C., Isacks, B.L., Foreland Shortening and Crustal Balancing in the Andes at 30° Latitude (1990) Tectonics, 9, pp. 789-809 
504 |a Assumpçao, M., The Regional Intraplate Stress Field in South America (1992) J. Geophys. Res., 97, pp. 11889-11903 
504 |a Barazangi, M., Isacks, B., Spatial Distribution of Earthquakes and Subduction of the Nazca Plate beneath South America (1976) Geology, 4, pp. 686-692 
504 |a Cahill, T., Isacks, B., Seismicity and Shape of the Subducted Nazca Plate (1992) J. Geophys. Res., 97, pp. 17503-17529 
504 |a Campbell, W., Schiffmacher, E., Upper Mantle Electrical Conductivity for Seven Subcontinental Regions of the Earth (1988) J. Geomag. Geoelectr., 40, pp. 1387-1406 
504 |a Chapman, D.S., Pollack, H.N., Regional Geotherms and Lithospheric Thickness (1977) Geology, 5, pp. 265-268 
504 |a Dorbath, C., Garnet, M., Poupinet, G., Martinez, C., A Teleseimic Study of the Altiplano and Eastern Cordillera in Northern Bolivia: New Constraints on a Lithopheric Model (1993) J. Geophys. Res., 98, pp. 9825-9844 
504 |a Fukao, Y., Yamamoto, A., Kono, M., Gravity Anomaly across the Peruvian Andes (1989) J. Geophys. Res., 94, pp. 3867-3890 
504 |a Giese, P., Geothermal structure of the Central Andean crust - Implications for heat transport and rheology (1993) Tectonics of the Southern Central Andes, pp. 69-76. , (eds. Reutter, K. J., Scheuber, E., and Wigger, P. J.) Springer-Verlag, New York 
504 |a Henry, S.G., Pollack, H.N., Terrestrial Heat Flow above the Andean Subduction Zone in Bolivia and Peru (1988) J. Geophys. Res., 93, pp. 15153-15162 
504 |a James, D.E., Andean Crustal and Upper Mantle Structure (1971) J. Geophys. Res., 76, pp. 3246-3271 
504 |a James, D.E., Snoke, J.A., Structure and Tectonics in the Region of the Flat Subduction beneath Central Peru: Crust and Uppermost Mantle (1994) J. Geophys. Res., 99, pp. 6899-6912 
504 |a Jordan, T.E., Isacks, B.L., Allmendinger, R.W., Brewer, J.A., Ramos, V.A., Ando, C.L., Andean Tectonics Related to Geometry of Subducted Nazca Plate (1983) Geol. Soc. Am. Bull., 94, pp. 341-361 
504 |a Norabuena, E.O., Snoke, A., James, D., Structure of the Subducting Nazca Plate beneath Peru (1994) J. Geophys Res, 99, pp. 9215-9226 
504 |a Osella, A.M., Favetto, A., Martinelli, P., Lateral Heterogeneities in the Upper and Mid-mantle Conductivity in Argentina (1993) Pure and Appl. Geophys., 141, pp. 139-156 
504 |a Osella, A.M., Favetto, A., Martinelli, P., Sensitivity of the Geomagnetic Daily Variations to 2D Structures (1993) Trends in Geophys. Res., 2, pp. 141-155 
504 |a Peacock, S.M., Thermal Effect of Metamorphic Fluids in Subduction Zones (1987) Geology, 15, pp. 1057-1060 
504 |a Schmitz, M., A Balanced Model of the Southern Central Andes (1994) Tectonics, 13 (2), pp. 485-492 
504 |a Schmucker, U., Hartmann, O., Giesecke, A.A., Casaverde, M., Forbush, S.E., Electrical Conductivity in the Earth's Crust in Peru (1963) Carnegie Institution of Washington Yearbook, 63, pp. 354-362 
504 |a Sheffels, B., Lower Bound on the Amount of Crustal Shortening in the Central Bolivian Andes (1990) Geology, 18, pp. 812-815 
504 |a Smalley, R., Pujol, J., Regnier, M., Chiu, J.M., Chatelain, B.L., Araujo, M., Puebla, N., Basement Seismicity beneath the Andean Precordillera Thin-skinned Thrust Belt and its Implications for Crustal and Lithosphere Behavior (1993) Tectonics, 12, pp. 63-76 
504 |a Tarits, P., Menvielle, M., The Andean Conductivity Anomaly Reexamined (1986) Annales Geophysicae, 4 B, pp. 63-70 
504 |a Whitman, D., Moho Geometry beneath the Eastern Margin of the Andes, Northwest Argentina, and its Implications to the Effective Elastic Thickness of the Andean Foreland (1994) J. Geophys. Res., 99, pp. 15277-15289 
504 |a Wigger, P., Schmitz, M., Araneda, M., Asch, G., Baldzhun, S., Giese, P., Heinsohn, W.D., Viramonte, J., Variation of the crustal structure of the southern Central Andes deduced from seismic refraction investigations (1993) Tectonics of the Southern Central Andes, pp. 23-48. , (eds. Reutter, K. J., Scheuber, E., and Wigger, P. J.) Springer-Verlag, New York 
506 |2 openaire  |e Política editorial 
520 3 |a An enhancement of the electrical conductivity in the upper layers in the subduction zones of southern Peru and northern Argentina is found by analyzing the solar quiet geomagnetic variations. This feature appears in a zone associated with large subduction angles. In this region high values of heat flow have been measured, therefore a one-dimensional thermal model is proposed using regional characteristic parameters to reproduce these values. It is found that thermal convection necessarily plays a contributing role. This effect may be produced by the ascending magma and fluids, which can explain the enhancement of the electrical conductivity.  |l eng 
536 |a Detalles de la financiación: Fundación Antorchas 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: This work was partly supported by CONICET (Consejo Nacional de Investiga-ciones Científicas y Técnicas) and Fundación Antorchas. 
593 |a Dep. de Fis.-Fac. Cs. Exactas, Universidad de Buenos Aires, Ciudad Universitaria, Pab 1, 1428 Buenos Aires, Argentina 
593 |a CONICET, Argentina 
651 4 |a SOUTH AMERICA, ANDES 
690 1 0 |a CENTRAL ANDES 
690 1 0 |a ELECTRICAL ANOMALY 
690 1 0 |a THERMAL ANOMALY 
690 1 0 |a ELECTRICAL CONDUCTIVITY 
690 1 0 |a HEAT FLOW 
690 1 0 |a SUBDUCTION ZONE 
690 1 0 |a THERMAL ANOMALY 
700 1 |a Martinelli, P. 
700 1 |a Osella, A. 
773 0 |d Birkhauser Verlag AG, 1997  |g v. 149  |h pp. 391-404  |k n. 2  |p Pure Appl. Geophys.  |x 00334553  |w (AR-BaUEN)CENRE-86  |t Pure and Applied Geophysics 
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856 4 0 |u https://hdl.handle.net/20.500.12110/paper_00334553_v149_n2_p391_Favetto  |x handle  |y Handle 
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