Abstract
Massive polymetallic sulfide deposits occur throughout the Iberian Pyrite Belt. The mineralization is related to submarine felsic volcanism that took place during the Upper Devonian-Lower Carboniferous evolution of the South Portuguese Zone. The geotectonic setting of the IPB is reexamined taking into account the results from active margin drilling under Deep Sea Drilling Program/IPOD. Changes of the mode of subduction from M-type to C-type, appears to be a reasonable model for the geological conditions prevailing at the IPB. It is suggested that the link between field geology and geochemical studies carried in ancient subduction complexes coupled with the studies of modern analogs, allows a better understanding of convergent margins and their ore deposits.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Alvarez, 1974, Los yacimientos de sulfuros polimetálicos del SO ibérico y sus métodos de prospección; unpubl. Ph.D thesis, Univ. Salamanca.
Bard, J.P., 1971, Sur l’alternance des zones métamorphiques dans le segment hercynien sud-ibérique; comparaison de la variabilité des caractères géotectoniques de ces zones avec les orogènes “orthotectoniques”.Bull. Geol. y Min., v. 82, no. 3–4, pp.324–345.
Bard, J.P., Capdevilla, R., Matte, P., and Ribeiro, A., 1973, Geotectonic model for the Iberian Variscan Orogen; Nature, v. 241, 107, pp., 50–52.
Barriga, F.J.A.S., 1983, Hydrothermal metamorphism and ore genesis at Aljustrel, Iberian Pyrite Belt; unpubl. Ph.D thesis, Univ. Western Ontario, p. 388
Barriga, F.J.A.S. and Kerrich, R., 1981, High O fluids, circulation regimes and mineralization at Aljustrel, Iberian Pyrite Belt; Geol. Soc. Amer., Abstr. Pap. (Boulder, Colo.), v.13, no. 7, pp. 403–404.
Barriga, F.J.A.S., and Carvalho, D., 1983, Carboniferous volcanogenic sulfide mineralizations in South Portugal Iberian Pyrite Belt; Serv. Geol. Portugal, Mem., no. 29, pp. 99–113.
Carvalho, D., 1972, The metallogenetic consequences of plate tectonics and the Upper Paleozoic evolution of Southern Portugal; Estudos Notas e Trabalhos do Servico Fomento Mineiro, v.20, pp. 297–320.
Carvalho, D., 1976, Consideracoes sobre o vulcanismo da regiao de Cercal-Odemira. Suas relacoes com a faixa piritosa; Comunic. Serv. Geol. Portugal, v.60, pp. 215–238.
Carvalho, D., 1979, Geologia, metalogenia e metodologia da investigaço de sulfuretos polimetalicos do Sul de Portugal; Comunic.Serv. Geol. Portugal, v.65, pp. 169–191.
Carvalho, D., Conde, L., Enrille, J., Oliveira, V.,Schermerhorn, L.J.G., 1976, Livro-guia das excursoes geologicas na faixa piritosa iberica; Comunic.Serv.Geol.Portugal, v.60, pp. 271–315.
Carvalho, D., Correia, H., Inverno, C, 1976, Contribuiçao para o conhecimento geologico do Grupo Ferreira-Ficalho. Suas relaçoes com a Faixa Piritosa e Grupo do Pulo do Lobo; Mem. e Noticias Univ. Coimbra, v.22, pp.145–169.
Dewey, J.F., 1973, Tibetan, Variscan, and Precambrian basement reactivation: products of continental collision. Journ.Geology, v. 81 , pp. 683–692.
Dewey, J.F., 1980, Epidosites, sequence and style at convergent plate boundaries. In: Strongway, D W (ed), The Continental crust and its mineral deposits; Geol. Assoc. Canada, special Paper no. 20, pp. 553–573.
Hilde, T.W.C., 1983, Sediment subduction versus accretion around the Pacific; Tectonophysics, v.99, pp. 381–397.
Hilde, T.W.C., and Sharman, G.F., 1978, Fault structure of the descending plate and its influence of the subduction process; EOS, v. 59, pp. 1182.
Hurley, P.M., Boudda, A., Kanes, W.H., and Nairn, A.E.M., 1974, A plate-tectonic origin for Late Precambrian- Paleozoic orogenic belt in Morocco; Geology, v.2, no. 7, pp. 343–344.
Hussong, D.M., Edwards, P.B,, Johnson, S.H., Campbell, J.F., Sutton, G.H., 1976, Crustal structure of the Peru-Chile Trench; 8–12 S latitude, In: Sutton, G.H., Manghnani, M.H., Moberly, R.; and McAfee, E.U. (eds.), The Geophysics of the Pacific Ocean Basin and Its Margin; Geophys. Monogr., Am. Geophys. Union 19, pp. 17–85.
Hussong, D.M., and Uyeda, S., 1981, Tectonic processes and the history of the Mariana arc: A synthesis of the results of deep sea drilling project leg no.60; In: Initial Reports of the Deep Sea Drilling Project, v. 60, National Science Foundation, Washington, D.C., pp. 909–929.
Lowell and Rona, 1984, Hydrothermal models for the generation of massive sulfide ore deposits; Journ. Geophys. Research, B, Paper 4B5005.
MacGillavry, H.J., 1961, The Upper Paleozoic of Baixo Alentejo, Southern Portugal; Econ. Geol., v. 72, pp. 527–548.
Meijer, A., Anthony, E., and Reagan, M., 1981, Petrology of volcanic rocks from the fore-arc sites. In: Initial Reports of the Deep Sea Drilling Project; v. 60, National Science Foundation, Washington, D.C., pp. 709–729
Munha, J. 1981, Igneous and metamorphic petrology of the Iberian Pyrite Belt volcanic rocks; unpubl. Ph. D. Thesis, Univ. of Western Ontario, p.711.
Munha, J., 1983, Hercynian magmatism in the Iberian Pyrite Belt; Serv. Geol. Portugal, Mem., no. 29, pp. 39–81.
Munha, J., Fyfe, W.S., and Kerrich, R., 1980, Adularia, the characteristic mineral of felsic spilites; Berlin, v. 75, no. 1, pp. 15–19.
Munha, J., and Kerrich, R., 1980, Seawater-basalt interaction in spilites from the Iberian Pyrite Belt; Berlin, v. 73, no. 2, pp. 191–200.
Oliveira, J.T., Horn, M., Paproth, E., 1979, Preliminary note on the stratigraphy of the Baixo Alentejo Flysch Group, Carboniferous of Portugal and on the paleo-geographic development compared to corresponding units in Northwest Germany; Comunic. Serv. Geol. Portugal, v.65, pp.151–168.
Oliveira, J.T., 1983, The Marine Carboniferous of South Portugal: A stratigraphic and sedimentological approach; Serv. Geol. Portugal, Mem. no.29, pp.3–37.
Ribeiro, A., 1974, Contribution a l’etude tectonique de Tras-os-Montes oriental; Serv.Geol.Portugal.Mem. no. 24, p. 168.
Ribeiro, A., and Silva, J.B., 1983, Structure of the South Portuguese zone. Serv.Geol.Portugal, Mem. n.29, pp. 83–89.
Sawkins, F.J., 1984, Metal deposits in relation to plate tectonics, Springer-Verlag, Berlin, 325 p.
Schermerhorn, L.J.G., 1975, Spilites, regional metamorphism and subduction in the Iberian Pyrite Belt: Some Comments; Geologie en Mijnbouw, v. 54, no. 1, pp. 23–35.
Soler, E., 1973, L’association spilites-quartz keratophyres du Sud-Ouest de la peninsule iberique. Geologie en Mijnbouw, v. 52, pp. 277–287.
Uyeda, S., 1982, Subduction zones: an introduction to comparative subductology; Tectonophysics, v. 81, pp. 133–150.
Uyeda, S., 1984, Subduction zones: their diversity, mechanism and human impacts; Geo Journal, v.8, no. 4, pp. 381–406.
Uyeda, S., and Kanamori, H., 1979, Back-arc opening and the mode of subduction; Jour. Geophys. Res., v. 84, pp. 1049–1061.
von Huene, R., Langseth, M., Nasu, N., Okada, H., 1980, Summary, Japan Trench Transect. Init. Rep. DSDP LVI-LVII, pt.1, U.S. Govern. Print off, Washington, D.C., pp. 473–488.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1987 D. Reidel Publishing Company
About this chapter
Cite this chapter
Monteiro, J.H., Carvalho, D. (1987). Seafloor Volcanism and Polymetallic Sulfide Deposits in Ancient Active Margins: The Case of the Iberian Pyrite Belt. In: Teleki, P.G., Dobson, M.R., Moore, J.R., von Stackelberg, U. (eds) Marine Minerals. NATO ASI Series, vol 194. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3803-8_26
Download citation
DOI: https://doi.org/10.1007/978-94-009-3803-8_26
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8192-4
Online ISBN: 978-94-009-3803-8
eBook Packages: Springer Book Archive