El salvador, chile porphyry copper deposit revisited: Geologic and geochronologic framework

International Geology Review

Volumn 39, Issue 1, 1997, Pages 22-54

  Cornejo, Paula ^a   Tosdal, Richard M ^b   Mpodozis, Constantino ^c   Tomlinson, Andrew J ^c   Rivera, Orlando ^c   Fanning, C Mark ^d  

^a Servicio National de Geologoia y Mineria   (Chile)

^b U S GEOLOGICAL SURVEY   (United States)

^c SERVICIO NACIONAL DE GEOLOGÍA Y MINERÍA   (Chile)

^d AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

COPPER; GEOCHRONOLOGY; PORPHYRY; TERTIARY;

CHILE, INDIO MUERTO;

EID: 0031454431     PISSN: 00206814     EISSN: 19382839     Source Type: Journal    
DOI: 10.1080/00206819709465258     Document Type: Article

References (74)

1. Andres, R. J., Rose, W. I., Kyle, P. R., deSilva, S., Francis, P., Gardeweg, M., and Moreno Roa, H., 1991. Excessive sulfur dioxide emissions from Chilean volcanoes. Jour. Volcanol. Geotherm. Res., 46:323–329.
2. Arévalo, C., 1995. Mapa geológico de la Hoja Copiapó:Región de Atacama:Documentos de Trabajo No. 8, Santiago:Servicio Nacional de Geología y Minería. l:100,000-scale map with extended legend
3. Arévalo, C., Rivera, O., Iriarte, S., and Mpodozis, C., 1994. Cuencas extensionales y campos de calderas del Cretácico Superior-Terciario Inferior en la Precordillera de Copiapó (27°–28° S), Chile. VII Congreso Geológico Chileno, Conceptión, Actas, 2:1288–1292.
4. Boric, R., Díaz, F., and V, Maksaev. 1990. Geología y yacimientos metalíferos de la región de Antofagasta. Santiago, Servicio Nacional de Geología y Minería, Boletín, 40 246 p
5. Brook, M., Pankhurst, R., Sheperd, T., and Shapiro, B., 1986. Andchron:Andean geochronology and metal-logenesis, London:Overseas Development Administration, Open-file Report. 83 p
6. Casselman, M. J., McMillan, W. J., and Newman, K. M., 1995. “ Highland Valley porphyry copper deposits near Kamloops, British Columbia:A review and update with emphasis on the Valley deposit ”. In Porphyry deposits of the north western Cordillera of North America, Edited by:Schroeter, T. G., Vol. 46, 161–191. Montreal:Can. Inst. Mining, Metall., Petrol.
7. Clark, A. H., 1993. “ Are outsize porphyry copper deposits either anatomically or environmentally distinctive? ”. In Giant ore deposits, Soc. Econ. Geol., Spec. Publ. No. 2 Edited by:Whiting, B. H., Mason, R., and Hodgson, C. J., 213–283. Boulder, CO
8. Clark, A. H., Farrar, E., and Zentilli, M., 1985. Discussion of “Relationships between mineralization and silicic volcanism in the Central Andes”. Jour. Volcanol. Geotherm. Res., 24:353–358.
9. Coira, B., Davidson, J., Mpodozis, C., and Ramos, V. A., 1982. Tectonic and magmatic evolution of the Andes of northern Argentina and Chile. Earth Sci. Rev., 18:303–332.
10. Cox, K. G., Bell, J. D., and Pankhurst, R. J., 1979. The interpretation of igneous rocks, London:George Allen and Unwin. 450 p
11. Cornejo, P., and Mpodozis, C., 1996. Geología de la región de Sierra Exploradora (Cordillera de Domeyko 25°-26° S), Santiago:Servicio Nacional de Geología y Minería-CODELCO, Registered report IR-96-09. 330 p
12. Cornejo, P., Mpodozis, C., Kay, S. M., and Tomlinson, A. J., 1994. Volcanismo bimodal potásico en regimen extensional del Cretácico superior-Eoceno en la región de El Salvador (26°-27° S), Chile. VII Congreso Geológico Chileno, Concepción, Actas, 2:1306–1310.
13. Cornejo, P., Mpodozis, C., Ramírez, C. F., and Tomlinson, A. J., 1993a. Estudio geológico de la región de Potrerillos y El Salvador (26°-27° Lat. S), Santiago:Servicio Nacional de Geología y Minería-CODELCO, Registered report IR-93-01. 258 p
14. Cornejo, P., Mpodozis, C., Kay, S. M., Tomlinson, A. J., and Ramirez, C. F., 1993b. Upper Cretaceous-Lower Eocene potassic volcanism in an extensional regime in the Precordillera of Copiapo, Chile:Second Symp. Int. Géodynamique Andine, Oxford (UK), 347–350. Paris:Éditions de l'ORSTROM, Collection Colloques et Séminaires.
15. Dilles, J. H., 1987. Petrology of the Yerington batholith, Nevada:Evidence for evolution of porphyry copper ore fluids. Econ. Geol., 82:1750–1789.
16. Frances, P. W., Halls, C., and Baker, M. C. W., 1983. Relationships between mineralization and silicic volcanism in the Central Andes. Jour. Volcanol. Geotherm. Res., 18:165–190.
17. Gradstein, F. M., and Ogg, J., 1996. A Phanerozoic time scale. Episodes, 19:3–5.
18. Gustafson, L. B., 1979. “ Porphyry copper deposits and calc-alkaline volcanism ”. In The Earth:Its origin, structure and evolution, Edited by:McElhinny, M. W., 427–468. London:Academic Press.
19. Gustafson, L. B., and Hunt, J. P., 1975. The porphyry copper deposit at El Salvador, Chile. Econ. Geol., 70:857–912.
20. Harland, W. B., Armstrong, R. L., Cox, A. V., Craig, L. E., Smith, A. G., and Smith, D. G., 1990. A geologic time scale 1989, Cambridge, UK:Cambridge Univ. Press. 263 p
21. Hedenquist, J. W., and Lowenstern, J. B., 1994. The role of magmas in the formation of hydrothermal ore deposits. Nature, 370:519–527.
22. Kay, R. W., and Kay, S. M., 1989. Delamination and delamination magmatism. Tectonophysics, 219:177–189.
23. Kay, S. M., and Abbruzzi, J. M., 1996. Magmatic evidence for Neogene lithospheric evolution of the central Andean “flat-slab” between 30° S and 32° S. Tectonophysics, 259:15–28.
24. Kay, S. M., Mpodozis, C., Tittler, A., and Cornejo, P., 1994. Tertiary magmatic evolution of the Maricunga mineral belt in Chile. INT. GEOL. REV., 36:1079–1112.
25. Le Bas, M. J., Le Maitre, R. W., Streckeisen, A., and Zanettin, B., 1986. A chemical classification of volcanic rocks based on the total alkali-silica diagram. Jour. Petrol., 27:745–750.
26. Lindsay, D. D., Zentilli, M., and Rojas de la Rivera, J., 1995. Evolution of an active ductile to brittle shear system controlling mineralization at the Chuquicamata porphyry copper deposit, northern Chile. INT. GEOL. REV., 37:945–958.
27. López-Escobar, L., 1982. Características geoquímicas de rocas ígneas asociadas con pórfidos cupríferos chilenos. Revista Geológica de Chile, 17:3–19.
28. Lowenstern, J. B., 1994. Dissolved volatile concentrations in ore-forming magma. Geology, 22:893–896.
29. Maksaev, V., 1990. Metallogeny, geological evolution, and thermochronology of the Chilean Andes between latitudes 21° and 26° South, and the origin of major porphyry copper deposits, Canada:Dalhousie Univ., Halifax, Nova Scotia. Unpubl. PhD thesis, 554 p
30. Maksaev, V., and Zentilli, M., 1988. Marco metalogénico de los megadepósitos de tipo pórfido cuprífero del Norte Grande de Chile. V Congreso Geológico Chileno, Santiago, Actas, 1:B181–B218.
31. Marinovic, N., Cortés, J., and Garcia, M., 1996. Estudio Geológico Regional de la zona comprendida entre Sierra del Buitre y Pampa San Roman, Santiago:Servicio Nacional de Geología y Minería-CODELCO, Registered Report IR-96-08. 156 p
32. Marinovic, N., Smoje, I., Maksaev, V., Hervé, M., and Mpodozis, C., 1995. Hoja Aguas Blancas:Región de Antofagasta, Carta Geológica de Chile No. 70 Santiago:Servicio Nacional de Geología y Minería. (l:250,000-scale map with text), 150 p
33. Marsh, T. M., Einaudi, M. T., and McWilliams, M. O., 1995. Ar/Ar geochronology of gold and copper mineralization in the Potrerillos district, Atacama region, Chile [abs.]. Geol. Soc. Amer., Abs. Prog., 27 (6):A-329
34. Matthews, S. J., Jones, A. P., and Beard, A. D., 1994a. Buffering of melt oxygen fugacity by sulphur redox reactions in calc-alkaline magmas. Jour. Geol. Soc. London, 151:815–823.
35. Matthews, S. J., Jones, A. P., and Gardeweg, M. C., 1994b. Lascar Volcano, northern Chile; evidence for steady-state disequilibrium. Jour. Petrol., 35:401–432.
36. Matthews, S. J., Sparks, R. S. J., and Gardeweg, M. C., 1995. “ The relationships between magma mixing and volatile behaviour at Lascar volcano (23° 22′ S, 67° 44′ W), northern Chile:Significance for the formation of copper sulphide and magnetite-apatite orebodies ”. In Giant ore deposits-II, Controls on the scale of orogenic magmatic-hydrothermal mineralization, Edited by:Clark, A. H., 146–181. Kingston, Ontario:QminEx Associates and Queen's University.
37. Mattinson, J. M., 1994. A study of complex discordance in zircons using stepwise dissolution techniques. Contrib. Mineral. Petrol., 116:117–129.
38. Mattinson, J. M., Graubard, C. M., Parkinson, D. L., and McClelland, W. C., 1996. “ U-Pb reverse discordance in zircons:The role of fine-scale oscillatory zoning and submicron transport of Pb ”. In Earth processes:Reading the isotopic code, Edited by:Basu, A. R., and Hart, S. R., 355–370. Washington, DC:Amer. Geophys. Union Mono. 95.
39. McCandless, T. E., and Ruiz, J., 1993. Rhenium-osmium evidence for regional mineralization in southwestern North America. Science, 261:1282–1286.
40. McKee, E. H., and Noble, D. C., 1990. Cenozoic tectonic events, magmatic pulses, and base-and precious-metal mineralization in the Central Andes. Circum-Pacific Council for Energy and Mineral Resources, Earth Sci. Series, 11:189–194.
41. 39Ar results from CODELCO El Salvador Samples, Phase 1, Santiago:CODELCO. Unpubl. report, 28 p
42. 39Ar results from CODELCO El Salvador Samples, Phase 2, Santiago:CODELCO. Unpubl. report, 11 p
43. Mégard, F., Noble, D. C., McKee, E. H., and Bellon, H., 1984. Multiple pulses of Neogene compressive deformation in the Ayacucho intermontane basin, Andes of central Peru. Geol. Soc. Amer. Bull., 95:1108–1117.
44. Mortimer, C., 1973. The Cenozoic history of the southern Atacama Desert, Chile. Jour. Geol. Soc. London, 129:505–526.
45. Mpodozis, C., and Cornejo, P., 1994. Segmentación Andina en el Paleozoico superior:Evidencias en los Batolitos Pérmicos Sierra del Castillo y Pedernales. VII Congreso Geológico Chileno, Conceptión, Actas, 2:1399–1403.
46. Mpodozis, C., Cornejo, P., Kay, S. M., and Titler, A., 1995. La Franja de Maricunga:Síntesis de la evolutión del frente volcánico Oligoceno-Mioceno de la zona sur de los Andes Centrales. Revista Geológico de Chile, 22:273–313.
47. Mpodozis, C., Marinovic, N., Smoje, I., and Cuitiño, L., 1993. Estudio Geológico-Estructural de la Cordillera de Domeyko entre Sierra Limón Verde y Sierra Mariposas Región de Antofagasta, Santiago:Servicio Nacional de Geologia y Mineria-CODELCO, Registered report IR-93-04. 282 p
48. Mpodozis, C., and Ramos, V. A., 1989. The Andes of Chile and Argentina. Circum-Pacific Council for Energy and Mineral Resources, Earth Sci. Series, 11:59–90.
49. Mpodozis, C., Tomlinson, A., and Cornejo, P., 1994. Acerca del control estructural de intrusivos eocenos y pórfidos cupríferos de la Región de Potrerillos-El Salvador. VII Congreso Geológico Chileno, Concepción, Actas, 2:1596–1600.
50. Naney, M. T., 1983. Phase equilibria of rock-forming ferromagnesian silicates in granitic system. Amer. Jour. Sci., 276:546–557.
51. Olson, S. F., 1989. The stratigraphic and structural setting of the Potrerillos porphyry copper district, Northern Chile. Revista Geológico de Chile, 16:3–29.
52. Quirt, G. S., 1972. A potassium-argon geochronological investigation of the Andean mobile belt of north-central Chile, Kingston, Ontario:Queen's Univ. Unpubl. Ph.D. thesis, 240 p
53. Rivera, O., 1995. Proyecto estudio geológico sector Kilómetro Catorce, escala 1:25,000, El Salvador, Chile:CODELCO. Unpubl. report, 50 p
54. Reutter, K. -J., Scheuber, E., and Chong, G., 1996. The Precordilleran fault system of Chuquicamata, northern Chile:Evidence for reversals along arc-parallel strike-slip faults. Tectonophysics, 259:213–228.
55. Ruiz, J., Freydier, C., McCandless, T., Chesley, J., and Munizaga, F., 1996. Re-Os systematics of porphyry copper mineralization in Chile. Anais, XXXIX Cong. Brasil. Geol., 7:281–283.
56. Ruiz, J., Freydier, C., McCandless, T., Chesley, J., and Munizaga, F., 1997. Re-Os isotope systematics of sulfides from base metal porphyry and manto-type mineralization in Chile. INT. GEOL. REV., forthcoming
57. Sanderson, D. J., and Marchini, R. D., 1981. Transpression. Jour. Struct. Geol., 6:449–458.
58. Sébrier, M., Lavenu, A., Fornari, M., and Soulas, J. P., 1988. Tectonics and uplift in Central Andes (Peru, Bolivia, and Northern Chile) from Eocene to present. Geodynamique, 3:85–106.
59. Skewes, M. A., and Stern, C. R., 1995. Genesis of the giant late Miocene to Pliocene copper deposits of Central Chile in the context of Andean magmatic and tectonic evolution. INT. GEOL. REV., 37:893–909.
60. Sillitoe, R. H., 1973. The tops and bottoms of porphyry copper deposits. Econ. Geol., 68:799–815.
61. Sillitoe, R. H., 1988. Epochs of intrusion-related copper mineralization in the Andes. Jour. South Amer. Earth Sci., 1:89–108.
62. Sparks, R. S. J., Sigurdsson, H., and Wilson, L., 1977. Magma mixing:A mechanism for triggering acid explosive eruptions. Nature, 267:315–318.
63. Steiger, R. H., and Jager, E., 1977. Subcommission on geochronology:Convention on the use of decay constants in geo- and cosmochronology. Earth Planet. Sci. Lett., 36:359–362.
64. Tera, F., and Wasserburg, G. J., 1972. U-Th-Pb systematics in three Apollo 14 basalts and the problem of initial Pb in lunar rocks. Earth Planet. Sci. Lett., 14:281–304.
65. Titley, S. R., 1982. “ Geologic setting of porphyry copper deposits:Southeastern Arizona ”. In Advances in geology of the porphyry copper deposits:Southwestern North America, Edited by:Titley, S. R., 37–58. Tucson:Univ. of Arizona Press.
66. Titley, S. R., and Beane, R. E., 1981. “ Porphyry copper deposits:Part I, geologic settings, petrology, and tectogenesis ”. In Econ. Geol., 75th Anniv. vol. Edited by:Skinner, B. J., 214–235.
67. Tobar, A., 1977. Stratigraphy and structure of the El Salvador-Potrerillos region, Atacama, Chile, Berkeley:Univ. of California. Unpubl. Ph.D. thesis, 153 p
68. Tomlinson, A. J., 1994. Relaciones entre el porfido cupífero y la falla inversa de la Mina de Potrerillos:Un caso de intrusión sintectónica. VII Congreso Geológico Chileno, Conceptión, Actas, 2:1629–1633.
69. Tomlinson, A. J., Mpodozis, C., Cornejo, P., and Ramirez, C. F., 1993. Structural geology of the Sierra Castillo-Agua Amarga fault system, Precordillera of Chile, El Salvador-Potrerillos:Second Symp. Int. Géodynamique Andine, Oxford (UK), 259–262. Paris:Éditions de l'ORSTROM, Collection Colloques et Sémi-naires.
70. Tosdal, R. M., 1995. “ Metal source differences in Cenozoic porphyry Cu-Mo-Au deposits in the central Andes between 26° and 28°:An influence on the size of porphyry deposits? ”. In Giant ore deposits-II, Controls on the scale of orogenic magmatic-hydrothermal mineralization, Edited by:Clark, A. H., 124–138. Kingston, Ontario:QminEx Associates and Queen's University.
71. Williams, W. C., 1995. The crustal heritage of ore deposits [abs.]. Geol. Soc. Amer., Abs. Prog., 27 (6):A-410
72. Zentilli, M., 1974. Geological evolution and metal-logenic relationships in the Andes of northern Chile between 26° and 29° South, Kingston, Ontario:Queen's Univ. Unpubl. Ph.D. thesis, 446 p
73. Zentilli, M., Doe, B., Hedge, C. E., Alvarez, O., Tidy, E., and Daroca, J. A., 1988. Isotopos de plomo en yacimientos de tipopórfido cuprífero comparados con otros depósitos metaliferos en los Andes del norte de Chile y Argentina. V Congreso Geológico Chileno, Santiago, Actas, 1:B331–B369.
74. Zentilli, M., Krogh, T. E., Maksaev, V., and Alpers, C. N., 1994. Uranium-lead dating of zircons from the Chuquicamata and La Escondida porphyry copper deposits, Chile. Inherited zircon cores of Paleozoic age with Tertiary overgrowths:Comunicaciones, 45:101–110.