Artículo

El editor solo permite decargar el artículo en su versión post-print desde el repositorio. Por favor, si usted posee dicha versión, enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

The Plio-Pleistocene Llancanelo volcanic field is located in the south-eastern region of the province of Mendoza, Argentina. This wide back-arc lava plateau, with hundreds of monogenetic pyroclastic cones, covers a large area behind the active Andean volcanic arc. Here we focus on the northern Llancanelo volcanic field, particularly in Las Bombas volcano. Las Bombas volcano is an eroded, but still recognizable, scoria cone located in a circular depression surrounded by a basaltic lava flow, suggesting that Las Bombas volcano was there when the lava flow field formed and, therefore, the lava flow engulfed it completely. While this explanation seems reasonable, the common presence of similar landforms in this part of the field justifies the need to establish correctly the stratigraphic relationship between lava flow fields and these circular depressions. The main purpose of this research is to investigate Las Bombas volcano 3D subsurface architecture by means of geophysical methods. We carried out a paleomagnetic study and detailed topographic, magnetic and gravimetric land surveys. Magnetic anomalies of normal and reverse polarity and paleomagnetic results point to the occurrence of two different volcanic episodes. A circular low Bouguer anomaly was detected beneath Las Bombas scoria cone indicating the existence of a mass deficit. A 3D forward gravity model was constructed, which suggests that the mass deficit would be related to the presence of fracture zones below Las Bombas volcano cone, due to sudden degassing of younger magma beneath it, or to a single phreatomagmatic explosion. Our results provide new and detailed information about Las Bombas volcano subsurface architecture. © 2017 Elsevier Ltd

Registro:

Documento: Artículo
Título:Subsurface architecture of Las Bombas volcano circular structure (Southern Mendoza, Argentina) from geophysical studies
Autor:Prezzi, C.; Risso, C.; Orgeira, M.J.; Nullo, F.; Sigismondi, M.E.; Margonari, L.
Filiación:UBA – CONICET. IGEBA-Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II, Buenos Aires, C1428EG, Argentina
UBA. IGEBA-Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II, Buenos Aires, C1428EG, Argentina
Newphoenix SRL, Argentina
YPF, Macacha Güemes 515, Buenos Aires, Argentina
Palabras clave:Gravity modeling; Llancanelo volcanic field, Argentina; Magnetic anomaly; Sub-surface structure; Bouguer anomaly; cinder cone; flow field; geophysical method; island arc; lava flow; paleomagnetism; pyroclastic flow; Argentina; Mendoza
Año:2017
Volumen:77
Página de inicio:247
Página de fin:260
DOI: http://dx.doi.org/10.1016/j.jsames.2017.05.011
Título revista:Journal of South American Earth Sciences
Título revista abreviado:J. South Am. Earth Sci.
ISSN:08959811
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v77_n_p247_Prezzi

Referencias:

  • Anci, S., Ruiz, F., Lince Klinger, F., Leiva, F., Sanchez, M., Álvarez, O., García, H., Acosta, G., Interpretación de las principales estructuras de La Payenia aplicando el método potencial gravimétrico (2014) Geoacta, 39 (1), pp. 11-19
  • Bermúdez, A., Delpino, D., (1989) La Provincia Basáltica Andino Cuyana (35-37°), Revista de la Asociación Geológica Argentina, 44, pp. 35-55
  • Bermúdez, A., Delpino, D., Frey, F., Saal, A., Los basaltos de retroarco extraandinos (1993) Geología y Recursos Naturales de Mendoza - 12º Congreso Geológico Argentino. Relatorio, 1, pp. 161-172. , V. Ramos (13)
  • Breunig, M., Cremers, A., Göotze, H.-J., Seidemann, R., Schmidt, S., Shumilov, S., Siehl, A., Geologic mapping based on 3-D models using an interoperable GIS (2000) J. Spat. Inf. Decis. Mak., 13, pp. 12-18
  • Briggs, I.C., Machine contouring using minimum curvature (1974) Geophysics, 39 (1), pp. 39-48
  • Espanon, V.R., Cosmogenic 21Ne and 3He Dating and Geochemistry of Young Basaltic Lavas from Southern Mendoza (2010), Unpublished, Master thesis University of Wollongong Australia; Fisher, R., Dispersion on a sphere (1953) Proc. R. Soc. Lond. A, 217, pp. 295-305
  • Götze, H.-J., Ein numerisches Verfahren zur Berechnung der gravimetrischen Feldgrößen dreidimensionaler Modellkörper (1978) Arch. Met. Geoph. Biokl. A, 25, pp. 195-215
  • Götze, H.-J., Uber den Einsatz interaktiver Computergraphik im Rahmen 3-dimensionaler Interpretationstechniken in Gravimetrie und Magnetik (1984), Habilitationsschrift Technische Universität Clausthal Clausthal; Götze, H.-J., Lahmeyer, B., Application of three-dimensional interactive modelling in gravity and magnetics (1988) Geophysics, 53 (8), pp. 1096-1108
  • Gudnason, J., Holm, P.M., Søager, N., Llambías, E., Geochronology of the late Pliocene to recent volcanic activity in the Payenia back-arc volcanic province, Mendoza Argentina (2012) J. S. Am. Earth Sci., 37, pp. 191-201
  • Gunn, P., Linear transformations of gravity and magnetic fields (1975) Geophys. Prospect., 23 (2), pp. 300-312
  • Hahn, A., Kind, E.G., Mishra, D.C., Depth estimates of magnetic sources by means of fourier amplitude spectra (1976) Geophys. Prospect., 24, pp. 278-308
  • Hinze, W.J., Aiken, C., Brozena, J., Coakley, B., Dater, D., Flanagan, G., Forsberg, R., Web, M., New standards for reducing gravity data: the North American gravity database (2005) Geophysics, 70, pp. J25-J32
  • Holom, D., Oldow, D., Gravity reduction spreadsheet to calculate the Bouguer anomaly using standardized methods and constants (2007) Geosphere, 3 (2), pp. 86-90
  • Kay, S., Magmatic sources, tectonic setting and causes of tertiary to recent Patagonian plateau magmatism (36º S to 52º S latitude) (2002) Actas del XV Congreso Geológico Argentino, Calafate. Actas, vol. III, pp. 95-100
  • Kereszturi, G., Németh, K., Cronin, S., Flores, J., Smith, I., Lindsay, J., A model for calculating eruptive volumes for monogenetic volcanoes – implication for the Quaternary Auckland volcanic field, New Zealand (2013) J. Volcanol. Geotherm. Res.
  • Kirschvink, J.L., The least-squares line and plane and the analysis of palaeomagnetic data (1980) Geophys. J. R. Astronomical Soc., 62, pp. 699-718
  • Legarreta, L., Uliana, M.A., The Jurassic succession in west-central Argentina: stratal patterns, sequences and paleogeographic evolution (1996) Palaeogeogr. Palaeoclimatol. Palaeoecol., 120, pp. 303-330
  • Lemoine, F.G., Kenyon, S.C., Factor, J.K., Trimmer, R.G., Pavlis, N.K., Chinn, D.S., Cox, C.M., Olson, T.R., The Development of the Joint NASA GSFC and the National Imagery and Mapping Agency (NIMA) Geopotential Model EGM96 (1998), NASA/TP-1998–206861, July 1998; Long, L., Kaufmann, R., Acquisition and Analysis of Terrestrial Gravity Data (2013), Cambridge University Press Cambridge; Mazzarini, F., Fornaciai, A., Bistacchi, A., Pasquarè, F., Fissural volcanism, polygenetic volcanic fields, and crustal thickness in the Payen volcanic complex on the central AndesAndes foreland (Mendoza, Argentina) (2008) G3, 9 (9)
  • McFadden, P.L., A new fold test for palaeomagnetic studies (1990) Geophys. J. Int., 103 (1), pp. 163-169
  • Németh, K., The morphology and origin of wide craters at Al Haruj al Abyad, Libya: maars and phreatomagmatism in a large intracontinental flood lava field? (2004) Z. für Geomorphol., 48 (4), pp. 417-439
  • Németh, K., Haller, M., Martin, U., Risso, C., Massaferro, G., Morphology of lava tumuli from Patagonia (Argentina), mendoza (Argentina) and Al-Haruj (Libya) (2008) Ztg. fur Geomorphol., 52 (2), pp. 181-194
  • Németh, K., Moufti, M.R., El-Masry, N., (2015), The role of phreatomagmatism in the Cenozoic intracontinental volcanic fields of the Kingdom of Saudi Arabia. 26th IUGG General Assembly, Abstract: IUGG-1321. Prague, Czech Republic, 22 June-July 2; Nullo, F.E., Stephens, G., Combina, A., Dimieri, L., Baldauf, P., Bouza, P., Hoja geológica 3569-III/3572-IV Malargüe, Provincia de Mendoza. Servicio Geológico Minero Argentino (2005), p. 90. , Instituto de Geología y Recursos Minerales Buenos Aires ISSN 0328e2333; Radivojevic, M., Toljic, M., Turki, S., Bojic, Z., Saric, K., Cvetkovic, V., Neogene to Quaternary basalts of the Jabal Eghei (Nuqay) area (south Libya): two distinct volcanic events or continuous volcanism with gradual shift in magma composition? (2015) J. Volcanol. Geotherm. Res., 293, pp. 57-74
  • Ramos, V.A., Kay, S.M., Overview of the tectonic evolution of southern Central Andes of Mendoza and Neuquén (35°-39°S lat) (2006) Evolution of an Andean Margin: a Tectonic And Magmatic View from the Andes to the Neuquén Basin (35°-39°S Lat), 407, pp. 1-17. , S.M. Kay V.A. Ramos Geological Society of America Geological Society of America Special Paper
  • Reid, A.B., Allsop, J., Granser, H., Millett, A., Somerton, I., Magnetic interpretation in three dimensions using Euler deconvolution (1990) Geophysics, 55 (1), pp. 80-91
  • Reid, A.B., FitzGerald, D., McInerney, P., Euler deconvolution of gravity data (2003) Proceedings of the Society of Exploration Geophysicists (SEG) Annual Meeting, pp. 580-583
  • Risso, C., Németh, K., Nullo, F., (2009), pp. 14-17. , Field Guide to Payún Matru and Llancanelo volcanic fields, Malargüe, Mendoza. 3rd. International Maar Conference, Malargüe, April; Risso, C., Prezzi, C., Orgeira, M.J., Nullo, F., Margonari, L., Németh, K., Inverse steptoes in Las Bombas volcano, as an evidence of explosive volcanism in a solidified lava flow field. Southern Mendoza-Argentina (2015) J. S. Am. Earth Sci., 63, pp. 360-374
  • Salem, A., Smith, R., Depth and structural index from normalized local wavenumber of 2D magnetic anomalies (2005) Geophys. Prospect., 53 (1), pp. 83-89
  • Schmidt, S., Götze, H.-J., Integration of data constraints and potential field modelling—an example from Southern Lower Saxony, Germany (1999) Phys. Chem. Earth (A), 24, pp. 191-196
  • (1991), Servicio Meteorológico Nacional. Estación Malargüe, Mendoza; Sigismondi, M.E., Estudio de la deformación litosférica de la cuenca Neuquina: estructura termal, datos de gravedad y sísmica de reflexión (2012), p. 367. , http://digital.bl.fcen.uba.ar/Download/Tesis/Tesis_5361_Sigismondi.pdf, PhD Thesis, Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires; Smith, W.H.F., Wessel, P., Gridding with continuous curvature splines in tension (1990) Geophysics, 55 (3), pp. 293-305
  • Spector, A., Grant, F.S., Statistical Models for interpreting aeromagnetic data (1970) Geophysics, 35, pp. 293-302
  • Zijderveld, J.A.A., AC demagnetization of rocks: analysis of results (1967) Methods in Paleomagnetism, pp. 254-286. , D.W. Collinson K.M. Creer S.K. Runcorn Elsevier

Citas:

---------- APA ----------
Prezzi, C., Risso, C., Orgeira, M.J., Nullo, F., Sigismondi, M.E. & Margonari, L. (2017) . Subsurface architecture of Las Bombas volcano circular structure (Southern Mendoza, Argentina) from geophysical studies. Journal of South American Earth Sciences, 77, 247-260.
http://dx.doi.org/10.1016/j.jsames.2017.05.011
---------- CHICAGO ----------
Prezzi, C., Risso, C., Orgeira, M.J., Nullo, F., Sigismondi, M.E., Margonari, L. "Subsurface architecture of Las Bombas volcano circular structure (Southern Mendoza, Argentina) from geophysical studies" . Journal of South American Earth Sciences 77 (2017) : 247-260.
http://dx.doi.org/10.1016/j.jsames.2017.05.011
---------- MLA ----------
Prezzi, C., Risso, C., Orgeira, M.J., Nullo, F., Sigismondi, M.E., Margonari, L. "Subsurface architecture of Las Bombas volcano circular structure (Southern Mendoza, Argentina) from geophysical studies" . Journal of South American Earth Sciences, vol. 77, 2017, pp. 247-260.
http://dx.doi.org/10.1016/j.jsames.2017.05.011
---------- VANCOUVER ----------
Prezzi, C., Risso, C., Orgeira, M.J., Nullo, F., Sigismondi, M.E., Margonari, L. Subsurface architecture of Las Bombas volcano circular structure (Southern Mendoza, Argentina) from geophysical studies. J. South Am. Earth Sci. 2017;77:247-260.
http://dx.doi.org/10.1016/j.jsames.2017.05.011