Origin and geological significance of the Melipilla Anomaly, Central Chile;Origen y significado geolögico de la Anomalfa Melipilla, Chile central

Revista Geologica de Chile

Volumn 25, Issue 2, 1998, Pages 175-198

  Yariez, Gonzalo A ^a   Gana, Paulina ^b   Fernândez, Ricardo ^a  

^a GEODATOS SAIC   (Chile)

^b SERVICIO NACIONAL DE GEOLOGÍA Y MINERÍA   (Chile)

Author keywords

Chile; Geophysics; Gravity; Magnetism; Magnetote iurics; Melipilla; Regional geology; Tectonics

Indexed keywords

GRAVITY ANOMALY; GRAVITY SURVEY; MAGNETIC ANOMALY; MAGNETOTELLURIC METHOD;

CHILE;

EID: 0032232716     PISSN: 07160208     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (49)

1. Aberg, G.; Aguirre, L; Levi, B.; Nyström, J. 1984. Spreading subsidence and generation of ensialic marginal basin: An example from the Early Cretaceous of Central Chile. In Marginal basin geology (Kokelaar, B.P.; Howells, M.; editors). Geological Society of London, Special Publication, No. 16, p. 185-193.
2. Aguirre, L; Levi, B.; Nyström, J.O.; 1989. the link between metamorphism, volcanism and geotectonic setting during the evolution of the Andes. In Evolution of metamorphic belts (Daily, J.S.; Cliff, R:A.; Yardley, B:W.D.; editors). Geological Society of London, Special Publication, No. 43, p. 223-232.
3. Blakely, R. 1995. Potential theory in gravity and magnetic applications. Cambridge University Press, 441 p. Stanford.
4. Charrier, R.; Munoz, N. 1994. Jurassic Cretaceous Palaeogeographic evolution of the Chilean Andes at 23°-24°S Latitude and 34°-35°S Latitude: A comparative analysis. In Tectonics of the Southern Central Andes (Reutter, K.J.; Scheuber, E.; Wigger, P.; editors). Springer-Verlag, p. 233-242.
5. Cordani, U.; Munizaga, F.; Hervé, F.; Hervé, M. 1976. Edades radiométricas provenientes del basamento cristalino de la Cordillera de la Costa de las provincias de Valparaîso y Santiago, Chile. In Congreso Geolôgico Chileno, No. 1, Adas, Vol. 2, p. F213-F222. Santiago.
6. Darwin, C. 1846. Geological observations on South America. Smith Elder and Co., 279 p. London.
7. Gamble, T.D.; Gobou.W.M.; Clarke, J. 1978. Magnetotelluric with remote reference. Geophysics, Vol. 44, p. 53-68.
8. Gana, P. 1991. Magmatismo bimodal del Triâsico Superior-Jurâsico Inferior, en la Cordillera de la Costa, provincias de Elqui y Limarî, Chile. Revista Geologica de Chile, Vol. 18, No. 1, p.55-67.
9. Gana, P.; Variez, G.; Wall, R. 1994. Evoluciön geotectönica de la Cordillera de la Costa de Chile Central (33°34°S): control geolögico y geofîsico. In Congreso Geolögico Chileno, No. 7, Actas, Vol. 1, p. 38-42, Concepcion.
10. Gana, P.;Tosdal, R.M. 1996. GeocronologïaU-PbyK-Ar en intrusivos del Paleozoico y Mesozoico de la Cordillera de la Costa, Région de Valparaiso, Chile. Revista Geologica de Chile, Vol. 23, No. 2, p. 151-164.
11. Gana, P.; Wall, R.; Gutiérrez, A. 1996. Mapa geolögico del area Valparaîso-Curacavi, regiones de Valparaiso y Metropolitana. Servicio National de Geologia y Mineria, Mapas Geologicos, No. 1, escala 1: 100.000, anexo.
12. 39Ar y K-Ar de un Waroscretâcico superior-eoceno en Chile central (33-33°-30'S). Revista Geologica de Chile, Vol 24, No. 2, p. 145-163.
13. Godoy, E..; Loske, W. 1997. Tectonismo sinplutönicode dioritas juräsicas al sur de Valparaiso: datos U-Pb sobre la 'Fase Quintay'. Revista Geolôgica de Chile, Vol. 15, No. 2, p. 145-163.
14. Hervé, F.; Munizaga, F.; Parada, M.A.; Brook, M.; Pankhurst, R.J.; Snelling, N.J.; Drake, R.E. 1988. Granitoids of the Coast Range of central Chile: Geochronology and geologic setting. Journal of South American Earth Sciences, Vol. 1, No. 2, p. 185-194.
15. Hervé, F. 1988 Late Paleozoic subduction and accretion in Southern Chile. Episodes, Vol. 11, No. 3, p.183-188.
16. Jones A.G. 1992. Electrical properties of the lower continental crust. In Continental lower crust (Fountain, D.M.; Arculus, R.; Kay, R.W.; editors). Elsevier, p. 81144. Amsterdam.
17. Kaufman A.A.; Keller, G.V. 1981. The magnetotelluric method. Elsevier, 595 p. Amsterdam.
18. Kay, S.M.; Maksaev, V.; Moscoso, R.; Mpodozis, C.; Nasi, C. 1987. Probing the evolving Andean lithosphère; mid-late Tertiary magmatism in Chile (29°-30330') over the modern zone of subhorizontal subduction. Journal of Geophysical Research, Vol. 92, p. 6173-6189.
19. Kay, S.M.; Mpodozis, C.; Ramos, V.A.; Munizaga, F. 1991. Magma source variations for mid-late Tertiary magmatic rocks associated with a shallowing subduction zone and a thickening crust in the central Andes (28 to 33°S). Geological Society of America, Special Paper, No. 265, p. 113-137.
20. Kurtz, A.C. 1996. Geochemical evolution and uplift history of Miocene plutons near the El Teniente copper mine, Chile (34°S-35°S). M.Sc. Thesis (Unpublished), Cornell University, 140 p.
21. Levi, B. 1969. Burial metamorphism of a cretaceous volcanic sequence west from Santiago, Chile. Contributions to Mineralogy and Petrology, Vol. 24, No. 1, p. 30-49.
22. Levi, B.; Aguirre, L.; Nystrôm, J.O. 1982. Metamorphic gradients in burial metamorphosed vesicular lavas: comparison of basalt and spilite in Cretaceous basic flows from central Chile. Contributions to Mineralogy and Petrology, Vol. 80, p. 49-58.
23. Mpodozis, C.; Ramos, V. 1990. The Andes of Chile and Argentina. In Geology of the Andes and its relation to hydrocarbon and mineral resources (Ericksen, G.E.; Cahas, M.T.; Reinemund, J.A.; editors). Circum-Pacific Council for Energy and Mineral Resources Earth Science Series, Vol. 11, p. 59-90. Houston.
24. Mpodozis, C.; Kay, S.M. 1992. Late Paleozoic to Triassic evolution of the Gondwana margin: evidence from Chilean Frontal Cordilleran batholiths (28°S to 31 °S). Geological Society of America, Bulletin, Vol. 104, p. 999-1014.
25. Nagel, K.R.; Saff, E.B.. 1989. Fundamentals of Differentials Equations. Seco:id edition. The Benjamin/Cummings Publishing Company, Inc., 682 p.
26. Naranjo J.A.; Hervé, F.; Prieto, X.; Munizaga, F. 1984. Acitividad mecänica de la falla Atacama al este de Chanaral: milonitizaciön y plutonismo. Ediciön especial Primer Coloquio Chileno del Proyecto PICG No. 202, Megafallas de Sudamérica. Universidadde Chile, Departamento de Geologia y Geofisica, Comunicaciones, No. 34, p. 57-66. Santiago.
27. Nasi, C.; Thiele, R. 1982. Estratigrafîa del Jurâsico y Cretâcico de la Cordillera de la Costa, al sur de Rïo Maipo, entre Melipilla y Laguna de Aculeo (Chile Central). Revista Geolôgica de Chile, No. 16, p. 8199.
28. Parada, M.A. 1990. Granitoid plutonism in Central Chile and its geodynamic implications; a review. Geological Society of America, Special Paper, No. 241, p. 51-65.
29. Parada, M.A. 1991. Geochemistry of theTriassicto Jurassic Plutonism of central Chile (30 to 33\S); petrogenetic implications and a tectonic discussion. Geological Society of America, Special Paper, No. 265. p. 99112.
30. Parada, M.A.; Nystrom, J.O.; Levi, B. 1997. The role of lithospheric delamination during the evolution of the Coastal Batholith of Central Chile (31°-34°S). In Congreso Geologico Chileno, No. 8, Actas, Vol 3, p. 1699-1703.
31. Parada, M.A.; Rivano, S.; Sepulveda, P.; Hervé, M.; Hervé, F.; Puig, A.; Munizaga, F.; Brook, M.; Pankhurst, R.; Snelling, N. 1988. Mesozoic and Cenozoic plutonic development in the Andes of central Chile (30°30É32°30'S). Journal of South American Earth Science, Vol. 1,No. 3, p. 249-260.
32. Parada, M.A.; Levi, B.; Nyström, J. 1991. Geochemistry of the Triassic to Jurassic plutonism of central Chile (30°-33°S); petrogenetic implications and a tectonic discussion. In Andean Magmatism and its tectonic setting (Harmon, R.S.; Rapela, C.; editors). Geological Society of America, Special Paper, No. 265, p. 99112. Boulder, Colorado.
33. Parra, J.C.; Yânez, G. 1988. Provincias magnéticas de Chile Central. Revista Geolôgica de Chile, Vol. 15, No. 2, p. 101-117.
34. Piracés, R. 1977. Geologia de la Cordillera de la Costa entre Catapilco y Limache, Region de Aconcagua. Memoria de Ti'tulo (Inédito), Universidad de Chile, Departamento de Geologia, 118 p.
35. Scharwz, G.; Haak, E.; Martinez, J.; Bannister, J. 1984. The electrical conductivity of the andean crust in the northern Chile and southern bolivia as inferred from magnetotelluric measurements. Journal of Geophysics, Vol. 55, p. 169-178.
36. Spector, A.; Grant, F.S. 1970, Statistical models for interpreting aeromagnetic data. Geophysics, Vol. 35, No. 2, p. 293-302.
37. Stern, C.R.; Amini, H.; Charrier, R.; Godoy, E.; Hervé, F.; Varela, J. 1984. Petrochemistry and age of rhyolitic pyroclastic flows which occur along the drainage valleys of the Rîo Maipo and Rio Cachapoal (Chile) and the Ri'o Yaucha and Rio Papagayos (Argentina). Revista Geolôgica de Chile, No. 23, p. 39-52.
38. Tassara A.; Yânez, G. 1996. Thermomechanic Segmentation of the Andes, 15-50°S: A flexural Analysis Approach. In Symposium of Andean Geodynamics, No. 3, p. 115-118. Saint Malo, Francia.
39. Tassara A.; Yânez, G.A. 1997. Segmentation de los Andes (12°-50°S): Un punto de vista reolögico aportado por un anâlisis flexural. In Congreso Geologico Chi/eno, No. 8, Actas, p. 271-275. Antofagasta.
40. Telford, W.M.; Geldart, L.P.; Sheriff, R.E. 1990. Applied geophysics, 2nd edition. Cambridge University Press, 770 p.
41. Thomas, H. 1958. Geologîa de la Cordillera de la Costa entre el valle de La Ligua y la Cuesta de Barriga. Instituto de Investigaciones Geologicas, Boletin, No. 2, 86 p., 2 mapas.
42. Torres-Verdin C.; Bostick, Jr., F.X. 1992. Principles of spatial surface electricfield filtering in magnetotellurics: Electromagnetic array profiling (EMAP). Geophysics, Vol. 57, No. 4, 603-622.
43. Vergara, M.; Levi, B.; Nyström, J.O.; Cancino, A. 1995. Jurassic and Early Cretaceous island arc volcanism, extension, and subsidence in the Coast Range of Central Chile. Geological Society of America, Bulletin, Vol. 107, No. 12, p. 1427-1440.
44. von Heune, R.; Corvalân, J.; Flueh, E.R.; Hina, K.; Korsgard, J.; Ranero, C.R.; Weinrebe, W.; and the CONDOR Scientist. 1997. Condor, a study of the Nazca Plate and adjacent Andean margin off Valparafso. Tectonics, Vol. 16, No. 3, p. 474-488.
45. Vozoff K. 1972. The magnetotelluric method in the exploration of sedimentary basins, Geophysics, 37, p. 98-141.
46. Wall, R.; Gana, P.; Gutiérrez, A. 1996. Geologfade la Hoja Santiago, area de San Antonio-Melipilla, regiones de Valparaiso, Metropolitana y del Libertador General Bernardo O'Higgins. Servicio National de Geologi'a y Miner/a, Mapas Geologicos, No. 2, 1 mapa escala 1:100.000.
47. Wanamaker, P.E. 1989. PWRDIS user documentation finite element program for solution of magnetotelluric responses and sensitivities for two dimensional earth resistivity structure. University of Utah Research Institute ESL-89043-TR.
48. Yänez, G.; Parra, J.C.; Alvarez, S. 1988. Intrusivos Jurâsicos al sur de los 33°S en el margen occidental de la Cordillera de la Costa, evidencias geofisicas. In Congreso Geologico Chileno, No. 5, Adas, Vol. 2, p. F267-F286. Santiago.
49. Variez, G. 1995. Some aspects of the long term lithospheric evolution: Rémanent magnetization of the ocean basins and deformation at convergent margins. Ph.D. Thesis (Unpublished), Columbia University, 269 p.