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Density and Thermal Structure of the Southern Andes and Adjacent Foreland from 32° to 55°S Using Earth Gravity Field Models

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Growth of the Southern Andes

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Abstract

GOCE satellite data and EGM2008 model are used to calculate the gravity anomaly and the vertical gravity gradient, both corrected by the topographic effect, in order to delineate main tectonic features related to density variations. In particular, using the Bouguer anomaly from GOCE, we calculated the crust–mantle discontinuity obtaining elastic thicknesses in the frame of the isostatic lithospheric flexure model applying the convolution method approach. Results show substantial variations in the density, compositional and thermal structure, and isostatic and flexural behavior of the continental lithosphere along the Southern Andes and adjacent foreland region.

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Acknowledgements

Authors acknowledge the use of the GMT mapping software of Wessel and Smith (1998) and to Dr. L. Uieda, Dr. J. Janak, Dr. M. Sprlak, and Dr. Prof. C. Braitenberg for their usefull softwares. The authors would like to thank to CONICET and the Ministerio de Ciencia y Técnica–Agencia de Promoción Científica y Tecnológica, PICT07-1903 for financial support.

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Authors and Affiliations

  1. Instituto Geofísico y Sismológico Ing. Volponi, Universidad Nacional de San Juan, Ruta 12-Km17, San Juan, Argentina

    Orlando Álvarez, Federico Lince Klinger, Mario Gimenez, Francisco Ruiz & Patricia Martinez

  2. CONICET, Consejo Nacional de Investigaciones Cientifícas y Técnicas, Buenos Aires, Argentina

    Orlando Álvarez, Federico Lince Klinger, Mario Gimenez & Patricia Martinez

Authors
  1. Orlando Álvarez
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  2. Federico Lince Klinger
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  3. Mario Gimenez
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  4. Francisco Ruiz
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  5. Patricia Martinez
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Corresponding author

Correspondence to Orlando Álvarez .

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Editors and Affiliations

  1. Estudios Andinos “Don Pablo, Groeber”, Departamento de Ciencias Geológicas, Estudios Andinos “Don Pablo, Groeber”, Buenos Aires, Argentina

    Andrés Folguera

  2. Departamento de Ciencias Geológicas, FCEN - Universidad de Buenos Aires, Instituto de Estudios Andinos “Don Pablo Groeber” and CONICET, Buenos Aires, Argentina

    Maximiliano Naipauer

  3. Departamento de Ciencias Geológicas, FCEN - Universidad de Buenos Aires, Instituto de Estudios Andinos “Don Pablo Groeber” and CONICET, Buenos Aires, Argentina

    Lucía Sagripanti

  4. Departamento de Ciencias Geológicas, FCEN - Universidad de Buenos Aires, Instituto de Estudios Andinos “Don Pablo Groeber” and CONICET, Buenos Aires, Argentina

    Matías C. Ghiglione

  5. Universidad Nacional de Río Negro - CONI, Instituto de Investigación en Paleobiolo Universidad Nacional de Río Negro - CONI, General Roca (Río Negro), Argentina

    Darío L. Orts

  6. Centro Regional de Investigaciones Científicas y Tecnológicas, IANIGLA, CCT Mendoza, Mendoza, Argentina

    Laura Giambiagi

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Álvarez, O., Lince Klinger, F., Gimenez, M., Ruiz, F., Martinez, P. (2016). Density and Thermal Structure of the Southern Andes and Adjacent Foreland from 32° to 55°S Using Earth Gravity Field Models. In: Folguera, A., Naipauer, M., Sagripanti, L., C. Ghiglione, M., Orts, D., Giambiagi, L. (eds) Growth of the Southern Andes. Springer Earth System Sciences. Springer, Cham. https://doi.org/10.1007/978-3-319-23060-3_2

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