Estimación de profundidades del Complejo Plutónico Navarrete mediante procesamiento gravimétrico

Authors

  • Flavia A. Croce CONICET. Instituto Geofísico Sismológico Ing. F. Volponi. Facultad de Ciencias Exactas, Físicas yNaturales. Universidad Nacional de San Juan
  • Federico Lince Klingerer ANPCYT. Instituto Geofísico Sismológico Ing. F. Volponi. Facultad de Ciencias Exactas, Físicas yNaturales. Universidad Nacional de San Juan.
  • Mario E. Giménez CONICET. Instituto Geofísico Sismológico Ing. F. Volponi. Facultad de Ciencias Exactas, Físicas yNaturales. Universidad Nacional de San Juan
  • M. Patricia Martinez CONICET. Instituto Geofísico Sismológico Ing. F. Volponi. Facultad de Ciencias Exactas, Físicas yNaturales. Universidad Nacional de San Juan
  • Francisco Ruiz Instituto Geofísico Sismológico Ing. F. Volponi. Facultad de Ciencias Exactas, Físicas y Naturales. Universidad Nacional de San Juan

Keywords:

Gravimetry, Somuncurá, Granites, Structures, Depths

Abstract

A gravimetric study is presented in the northeast region of the Somuncurá massif, with the objective of analyzing the geometry and maximum depths of the Navarrete Plutonic Complex, located in the upper crust. A Bouguer anomaly map was filtered in order to separating these anomalies in regional anomaly (which should contain the effects of deep crustal features) and residual anomaly (which should contain the effects of local and near surface masses). The process used was the upward continuation method of the potential field. As a result, the west Navarrete granite formation shows a positive value of +5 mGal for gravity anomalies. On the contrary, the east Navarrete granite formation presents negative values between -5 and -10 mGal. A two dimensional power spectrum was applied to the Bouguer residual anomaly to estimate the igneous bodies’ maximum depths, with 8 km depth for east Navarrete granite and 6.5 km for west Navarrete granite.

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References

Basei, M. et al., 2002. 15° Cong. Geol. Arg., Actas, 3: 117-122.

Caminos, R., 1983. Descripción Geológica de las Hojas 39g, Cerro Tapiluke y 39h, Chipauquil, Provincia de Río Negro. Servicio Geológico Nacional, 41p (inédito).

Gupta, V.K. and N. Ramani, 1980. Some aspects regional-residual separation of gravity anomalies in a Precambrian terrain. Geophysics, v. 45, nro. 9 ,1412-1426.

Hinze, W.J., 2003. Bouguer reduction density, why 2.67. Geophysics, v. 68, 5, 1559-1560.

Hinze, W.J. et al., 2005. New standards for reducing gravity data: The North American Gravity database. Geophysics, v. 70, 4 J25-J32.

Kane, M.F., 1962. A Comprehensive System of Terrain Corrections Using a Digital Computer. Geophysics, v. 27, 4 455-462.

LaFehr, T.R., 1991. Standardization in gravity reduction. Geophysics, 56 1170-1178.

Morelli, C. et al.,1974. The International Gravity Standardization Net 1971. International Association of Geodesy, Special Publication 4.

Nagy, D., 1966. The Gravitacional Attraction of a Right Rectangular Prism. Geophysics, v. 31, nro. 2 362-371.

Pankhurst, R.J, C.W. Rapela, C.M. Fanning, M. Márquez, 2006. Gonwanide continental collision and the origin of Patagonia. Earth-Science Reviews, v.76, issues 3-4, 235-257.

Pankhurst, R.J, R. Caminos y C.W. Rapela, 1999. Problemas Geocronológicos de los Granitoides Gondwánicos de Nahuel Niyeu, Macizo Norpatagónico. XII Congreso Geológico Argentino y II Congreso de Exploración de Hidrocarburos. Actas IV 99-104.

Rapela, C.W. y E.J. Llambías, 1984. Evolución magmática y relaciones regionales de los Complejos Eruptivos de La Esperanza. Provincia de Río Negro. Asociación Geológica Argentina, Revista 40 (1): 4-25. Buenos Aires

Spector, A. and Grant, F.S., 1970. Statistical models for interpreting aeromagnetic data. Geophysics, 35:293-302

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Published

2009-06-05

How to Cite

Croce, F. A. ., Lince Klingerer, F. ., Giménez, M. E. ., Martinez, M. P. ., & Ruiz, F. (2009). Estimación de profundidades del Complejo Plutónico Navarrete mediante procesamiento gravimétrico. Geoacta, 34(1). Retrieved from https://revistas.unlp.edu.ar/geoacta/article/view/13384

Issue

Vol. 34 No. 1 (2009)

Section

Scientific work

License

Copyright (c) 2009 Flavia A. Croce, Federico Lince Klingerer, Mario E. Giménez, M. Patricia Martinez, Francisco Ruiz

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