Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-08T05:27:35.778Z Has data issue: false hasContentIssue false

The La Tolita—Tumaco Culture: Master Metalsmiths in Gold and Platinum

Published online by Cambridge University Press:  20 January 2017

David A. Scott*
Affiliation:
Department of Art History, Interdepartmental Program in Archaeological and Ethnographic Conservation, Room A410, the Cotsen Institute of Archaeology, University of California-Los Angeles, 405 Hilgard Ave., Los Angeles, CA 90095 ([email protected])

Abstract

The archaeological setting of the La Tolita—Tumaco culture is briefly discussed as a framework for the examination of the metallurgy of the area, in particular the gold—platinum alloys used to make platinum-coated gold objects, platinum—gold sintered alloys, and platinum—gold foil—plated objects. The sophisticated approach to the manipulation of metallic materials resulted in several notable advances being made by the La Tolita—Tumaco culture: the production of extremely fine rectangular wire, bimetallic tumbaga alloys, small lead spheres inlaid with platinum, soldering, granulation, and a degree of sophistication to metalworking that is very impressive and, in some cases, unique in the world. Some selected examples are discussed, and the microstructure of a representative selection of the La Tolita material, bimetallic tumbaga construction, the initial sintered gold—platinum product, platinum-plated gold, and heavily worked gold—platinum composite artifacts are presented.

Resumen

Resumen

Se discute brevemente el panorama arqueológico de la cultura La Tolita-Tumaco como una introducción para el examen de la metalurgia del área, en particular, las aleaciones de oro-platino usadas para hacer revestimientos de platino en objetos de oro, las mezclas para aleaciones de oro-platino, y objetos de oro-platino laminados. La sofisticada manipulación de materiales metálicos resultó en varios avances notables hechos por la cultura La Tolita-Tumaco: la producción de alambre rectangular muy fino, las aleaciones bimétalicas de tumbaga, las pequeñas esferas de plomo incrustadas con platino; el soldado; la granulación y el grado de sofisticación del trabajo en metal es muy impresionante y algunas veces representan casos únicos en el mundo. Se discuten algunos ejemplos seleccionados, y se presenta aquí una muestra representativa de la microestructura del material de La Tolita, la estructura bimetálica de tumbaga, las mezclas iniciales producidas en oro-platino, el platino-enchapado en oro, y artefactos sumamente elaborados compuestos en oro-platino.

Type
Articles
Copyright
Copyright ©2011 by the Society for American Archaeology

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References Cited

Alcina Franch, José 1979 La arqueología de Esmeraldas (Ecuador): Introductión general. Memorias de la misión Española en el Ecuador: I. Ministerio de Asuntos Exteriores, Madrid.Google Scholar
Alva, Walter 1992 Orfebreria del Formativo en Oro del antiguo Peru 17–118. Banco de Crédito del Peru, Lima.Google Scholar
Anawalt, Patricia Rieff 1992 Ancient Cultural Contacts between Ecuador, West Mexico, and the American Southwest: Clothing Similarities. Latin American Antiquity 3:114129.CrossRefGoogle Scholar
Asaro, Frank, Salazar, Ernesto, Michel, Helen V., Burger, Richard L., and Strous, Fred H. 1994 Ecuadorian Obsidian Sources Used for Artifact Production and Methods for Provenience Assignments. Latin American Antiquity 5:257227.CrossRefGoogle Scholar
Augé, Thierry, and Legendre, Oliver 1992 Pt–Fe Nuggets from Alluvial Deposits in Eastern Madagascar. Canadian Mineralogist 30:9831004.Google Scholar
Balboa, Vasco Núñez de 1951 [1513] Cartas. In La gobernación de Urabá y provincias del Darién, by Horacio Rodríguez Plata, pp. 213227. Curso superior de historia Vol. 4. Academia Colombiana de Historia. Editorial ABC, Bogotá.Google Scholar
Bergsøe, Paul 1937 The Metallurgy and Technology of Gold and Platinum Among the Pre-Columbian Indians. Translated by F. C. Reynolds. Ingeniørvidenskabelige Skrifter No. A 44. Naturvidenskabelige Samfund i Komisssion hos G.E.C., Gad, Copenhagen.Google Scholar
Bergsøe, Paul 1938 The Gilding Process and the Metallurgy of Copper and Lead Among the Pre-Columbian Indians. Translated by F. C. Reynolds. Ingeniørvidenskabelige Skrifter No. A 46. Naturvidenskabelige Samfund i Komisssion hos G.E.C., Copenhagen.Google Scholar
Bernal, John E., and Briceno, Ian 2006 Genetic and Other Diseases in the Pottery of Tumaco–La Tolita Culture in Colombia–Ecuador. Clinical Genetics 70:188191.CrossRefGoogle ScholarPubMed
Bouchard, Jean-François 1977–1978 Investigaciones arqueológicas en la costa Pacífica Meridional de Colombia. El Proyecto Tumaco. Revista Colombiana de Antropología 21:283314.Google Scholar
Bouchard, Jean-François 1979 Hilos de oro martillado hallados en la costa Pacífica del Sur de Colombia. Boletín, Museo del Oro 2:2024.Google Scholar
Bouchard, Jean-François 1984 Recherches Archéologiques dans la Région de Tumaco (Colombie). Mémoire No. 34. Institut Français d’Études Andines, Éditions Recherches sur les Civilisations, Paris.Google Scholar
Bouchard, Jean-François 1995 Arqueología de la costa del Pacifico Nor-Equatorial. Evaluación preliminar de los cambios ocurridos en los últimos decenios. In Primer Encuentro de Investigadores de la Costa Ecuatoriana en Europa, edited by A. Alvarez, S. G. Alvarez, and C. Fauría, pp. 6795. Ediciones Abya-Yala, Quito.Google Scholar
Bouchard, Jean-François, and Usselmann, Pierre 2003 Trois millénaires de civilisation entre Colombie et Equateur. La région de Tumaco La Tolita. CNRS Editions, Paris.Google Scholar
Bray, Warwick 1971 Ancient American Metalsmiths. Proceedings of the Royal Anthropological Institute of Great Britain and Ireland, No. 1971:2543.CrossRefGoogle Scholar
Bray, Warwick 1978 The Gold of El Dorado. Catalog of the London Exhibition of Colombian Goldwork, Royal Academy 1978–1979. Time Books, London.Google Scholar
Bray, Warwick 1979 Goldverarbeitung im Alten Amerika I. Gold-schmiedezeitung 4:149151.Google Scholar
Bray, Warwick 1993 The Techniques of Gilding and Surface-Enrichment in Pre-Hispanic American Metallurgy. In Metal Plating and Patination, edited by Susan La Niece and Paul T. Craddock, pp. 182192. Butterworth-Heinemann, London.CrossRefGoogle Scholar
Bray, Warwick, de Schrimpff, Marianne Cardale, Herrera, Leonor, Legast, Anne, Patino, Diogenes, and Rodriguez, Carlos Armando 2000 Lords of the Marshes: The Malagana People. In Calima and Malagana: Art and Archaeology in Southwestern Colombia, pp. 140197. Pro Calima Foundation, Geneva.Google Scholar
Bruhns, Karen Olsen 1994 Ancient South America. Cambridge University Press, Cambridge.Google Scholar
Bushnell, Geoffrey H.S. 1951 The Archaeology of the Santa Elena Peninsula in South-West Ecuador. Cambridge University Press, Cambridge.Google Scholar
Cabri, Louis J., and Feather, Clive E. 1975 Platinum–Iron Alloys: A Nomenclature Based on a Study of Natural and Synthetic Alloys. Canadian Mineralogist 13:117126.Google Scholar
Cabri, Louis J., Harris, David C., and Weiser, Tom W. 1996 Mineralogy and Distribution of Platinum Mineral (PGM) Placer Deposits of the World. Exploration and Mining Geology 5:73167.Google Scholar
Calvopina, Manuel, Armijos, Rodrigo X., and Hashiguchi, Yoshihisa 2004 Epidemiology of Leishmaniasis in Ecuador: Current Status of Knowledge—A Review. Memórias do Institute Oswaldo Cruz 99:663672.CrossRefGoogle ScholarPubMed
Cardale de Schrimpff, Marianne 2000 The People of the llama Period. In Calima and Malagana: Art and Archaeology in Southwestern Colombia, pp. 3693. Pro Calima Foundation, Geneva.Google Scholar
Castillo, J. Ciceron 1909 Geology of the Platinum Deposits of Colombia. Mining and Science Press 98:826828.Google Scholar
Chaparro, Francisco Guillén 1889 [1583] Memoria de los pueblos de la gobernacián de Popaydn ycosasy constelaciones que hay en ellos. Anales de instrucción pública de la República de Colombia Vol. 15. Imprenta La Luz, Bogotá.Google Scholar
Cubillos, Julio César 1955 Tumaco (notas arqueólogicas). Editorial Minerva, Bogotá.Google Scholar
Darken, Leonard S., and Gurry, Richard W. 1953 The Physical Chemistry of Metals. Metallurgy and Metallurgical Engineering Series, R. F. Mehl, editor, McGraw-Hill, London.Google Scholar
d’Harcourt, Raoul 1948 Archéologie d’Esmeraldas et de Manabí, Équateur. Journal de la Société des Américanistes de Paris (N.S.) 37:319325.Google Scholar
Emmerich, André 1965 Sweat of the Sun and Tears of the Moon. Washington University Press, Seattle.Google Scholar
Emmons, Guy 1937 Gold Deposits of the World. McGraw-Hill, New York.Google Scholar
Enciso, Martín Fernández de 1895 [1519] La suma de geografía de Bachiller Martin Fernández de Enciso, Alguacil Mayor de Castilla de Oro. J. Croberger, Seville.Google Scholar
Estévez de Romero, P. 1995 Mascarilla zoomorfa, la descripción y análisis del objecto fue publicado en el Catálogo de la Sala del Oro del Museo Nacional del Banco Central del Ecuador. 3135. Banco Central del Ecuador, Quito.Google Scholar
Estévez de Romero, P. 1998 Platino en el Ecuador precolombino. Boletín, Museo del Oro 44-45:158181.Google Scholar
Estrada, Emilio 1962 Arqueología de Manabí Central. Publicaciones del Museo E. Estrada No. 7. Guayaquil.Google Scholar
Farabee, William Curtis 1921 A Golden Hoard from Ecuador. Museum Journal Philadelphia 12:4352.Google Scholar
Ferdon, Edwin N. 1940 Reconnaissance in Esmeraldas. El Palacio 42:257272.Google Scholar
Francisco, Alice E. 1969 An Archaeological Sequence from Carchi, Ecuador. Unpublished Ph.D. dissertation, Department of Anthropology, University of California, Berkeley.Google Scholar
Guinea, Mercedes 1995 Diferentes mecanismos de articulación hombre-entorno en la costa norte del Ecuador: La desembocadura del Esmeraldas del principio de nuestra era al año 1527. In: Primer Encuentro de Investigadores de la Costa Ecuatoriana en Europa. (Ed. Aurelio Alvarez, Silvia G. Alvarez, Carmen Fauría and Jorge G. Marcos) 4766. Ediciones Abya-Yala, Quito.Google Scholar
Grosse, Edvard 1932 Zur Kenntnis derGold-Silberlagerstätten von Titiribi. Zeitschrift für Praktische Geologie 40:4445.Google Scholar
Handvverker, Carol A., Lechtman, Heather N., Marineko, Ryna B., Bright, David S., and Newbury, Dale E. 1991 Fabrication of Platinum–Gold Alloys in Pre-Hispanic South America: Issues of Temperature and Microstructure Control. In Materials Issues in Art and Archaeology 11, edited by Pamela B. Vandiver, James Druzik, and George Segan Wheeler, pp. 649664. Materials Research Society, Pittsburgh.Google Scholar
Harris, David C, and Cabri, Louis J. 1973 The Nomenclature of Natural Alloys of Os/Ir/Ru. Canadian Mineralogist 12:104112.Google Scholar
Harris, David C, and Cabri, Louis J. 1991 Nomenclature of Platinum Group Element Alloys: Review and Revision. Canadian Mineralogy 29:231237.Google Scholar
Heuland, Henri 1818 On a Mass of Platinum at Madrid. Annals of Philosophy 12:200201.Google Scholar
Johan, Z., Ohnenstetter, M., Fischer, W., and Amossè, J. 1990 Platinum-Group Minerals from the Durance River Alluvium, France. Mineralogie et Petrologie 42:287306.CrossRefGoogle Scholar
Juleff, Jill 1981 X-Ray Diffraction Studies of Gold. Unpublished B .Sc. thesis, Institute of Archaeology, London.Google Scholar
Krstic, Stefan, and Tarkian, Mark 1997 Platinum Group Minerals in Gold Bearing Placers Associated with the Velnice Ophiolite Complex, Yugoslavia. Canadian Mineralogist 35:121.Google Scholar
Lane, Kris 2002 Quito 1599: City and Colony in Transition. University of New Mexico Press, Albuquerque.Google Scholar
La Niece, Susan, and Meeks, Nigel 2000 Diversity of Goldsmithing Traditions in the Americas and the Old World. In Precolumbian Gold, Technology, Style and Iconography, edited by Colin McEwan, pp. 220239. British Museum Press, London.Google Scholar
Lathrap, Donald W., Collier, Donald, and Chandra, Helen 1975 Ancient Ecuador: Culture, Clay and Creativity 3000 B.C.–300 B.C. Field Museum of Natural History, Chicago.Google Scholar
Lechtman, Heather N. 1973 The Gilding of Metals in Pre-Columbian Peru. In Application of Science in Examination of Works of Art, edited by William J. Young, pp. 3852. Museum of Fine Arts, Boston.Google Scholar
Lechtman, Heather N. 1979 A Pre-Columbian Technique for Electrochemical Replacement Plating of Gold and Silver on Copper Objects. Journal of Metals 31:154160.Google Scholar
López de Gómara, Francisco 1852 [1553] Hispania Victrix: Primera y segunda parte de la Historia General de las Indias. In Historiadores Primitivos de Indian, edited by E. de Vedia, Vol. 1:155445. Biblioteca de Autores Españoles 22. Madrid.Google Scholar
Masucci, Maria A. 2008 Early Regional Polities of Coastal Ecuador. In Handbook of South American Archaeology, edited by Helaine Silverman and William H. Isbell, pp. 489503. Springer, New York.CrossRefGoogle Scholar
Matano, Christopher 1933 Variation of Interdiffusion Coefficients in Au–Ni, Au–Pd and Pt–Au. Japanese Journal of Physics 8:109111.Google Scholar
McDonald, Donald 1959 The Platinum of New Granada: Mining and Metallurgy in the Spanish Colonial Empire. Platinum Metals Review 3:140145.CrossRefGoogle Scholar
McDonald, Donald 1960 A History of Platinum from the Earliest Times to the IS80’s. Johnson Matthey, London.Google Scholar
McDonald, Donald, and Hunt, Leslie B. 1982 A History of Platinum and Its Allied Metals. Johnson Matthey, London.Google Scholar
Meeks, Nigel D., Niece, Susan La, and Estévez, P. 2002 The Technology of Early Platinum Plating: A Gold Mask of the La Tolita Culture, Ecuador. Archaeometry 44:273284.CrossRefGoogle Scholar
Meggers, Betty J. 1966 Ecuador. Ancient Peoples and Places Series. Thames and Hudson, London.Google Scholar
Mertie, John B. Jr. 1969 Economic Geology of the Platinum Metals. U.S. Geological Survey Professional Paper 630:120. Washington, D.C.CrossRefGoogle Scholar
Monroy, H. Guillermo 1978 Platina. In Recursos minerales de Colombia, edited by Raúl Angulo Carmona, Vol. 1: 429440. Publicaciones Geológicas Especiales del Ingeominas, Ministero de Minas y Energia, Bogotá.Google Scholar
Munizaga, José R. 1976 Intentional Cranial Deformation in the PreColumbian Populations of Ecuador. American Journal of Physical Anthropology 45:687694.CrossRefGoogle Scholar
del Oro, Museo 2009 Goldworking Areas of Colombia. Museo del Oro, Banco de la República, Bogotá. Electronic document, http://www.banrep.gov.co, accessed March 2009.Google Scholar
Nickel, E. Henry 1992 Nomenclature for Mineral Solid-Solutions. American Mineralogy 77:660662.Google Scholar
Noble, John A. 1976 Metallogenic Provinces of the Cordillera of Western North and South America. Mineralium Deposita 11:219233.CrossRefGoogle Scholar
Noguez, Miguel, García, Roberto, Salas, George, Robert, Tony, and Ramírez, José 2006 About the Pre-Hispanic Au–Pt Sintering Technique for Making Alloys. Journal of the Minerals, Metals and Materials Society 58:3843.CrossRefGoogle Scholar
Oddy, W. Andrew 1977 The Production of Gold Wire in Antiquity: Hand-Making Methods before the Introduction of the Draw-Plate. Gold Bulletin 10:7987.CrossRefGoogle Scholar
Oddy, W. Andrew 1981 Gold Wire in Antiquity. Aurum 5:812.Google Scholar
Oddy, W. Andrew 1983 Ancient Jewellery as a Source of Technological Information: A Study of Techniques for Making Wire. In 4th International Restorer Seminar, pp. 123125. Veszprém, Hungary.Google Scholar
Ogden, Jack M. 1982 Jewellery of the Ancient World. Trefoil Books, London.Google Scholar
Orchard, William C. 1925 Minute Gold Beads from La Tolita, Ecuador. Indian Notes 2:4856. Museum of the American Indian, Heye Foundation, New York.Google Scholar
Orchard, William C. 1927 Nose Ornaments of Gold. Indian Notes 4:118124. Museum of the American Indian, Heye Foundation, New York.Google Scholar
Orchard, William C. 1929 Beads and Beadwork of the American Indians: A Study Based on the Specimens in the Museum of the American Indian. Heye Foundation, New York.CrossRefGoogle Scholar
Oviedo y Valdés, Gonzalo Fernández de 1959 [1535–1548] Historia general y natural de las Indias, islasy tierra-firme del Mar Océano. Biblioteca de Autores Españoles. Vols. 117121. Editorial Atlas, Madrid.Google Scholar
Pachajoa, Henri, Rodríquez, Carlos A., and Waza, Carl 2009 Possible Case of Morquio Syndrome in the Pottery of Tumaco–La Tolita Culture. Revista de Neurología 48:5253.CrossRefGoogle Scholar
Plazas, Clemencia 2007 La Metalurgia del Área Intermedia Sur dentro del Panorama Americano. International Journal of South American Archaeology 1:3338.Google Scholar
Plazas de Nieto, Clemencia, and de Saénz, Ana Maria Falchetti 1978 El Dorado: Colombian Gold. Australian Art Exhibitions, Sydney.Google Scholar
Reichel-Dolmatoff, Gerardo 1965 Colombia. Ancient Peoples and Places Vol. 44. Thames and Hudson, London.Google Scholar
Reichel-Dolmatoff, Gerardo 1978 Colombia indígena: Periodo prehispánico. In Manual de historia de Colombia, Vol. 1:31114. Colcultura, Bogotá.Google Scholar
Reichlen, Henri 1941 La Procédé de la Dourure et la Métallurgie du Cuivre et du Plomb à Esmeraldas, Équateur. Journal de la Société des Américanistes de Paris (N.S.) 33:177180.Google Scholar
Reichlen, Henri 1942 Contribution à I’Étude de la Métallurgie Précolombienne de la province d’Esmeraldas (Équateur). Journal de la Société des Américanistes de Paris (N.S.) 34:201228.Google Scholar
Salazar, Nohora, Bonilla, Lisette, Romero, Armando, and Rodríguez, Carlos 2006 Tecnología del platino en la fabricatión de piezas de orfebrería precolombina. Boletín, Museo del Oro 54:2645.Google Scholar
Santa Gertrudis, Fray Juan 1756 Maravillas del la naturaleza. Archivo de Indias, Seville.Google Scholar
Saville, Marshall H. 1907–1910 The Antiquities of Manabí, Ecuador: Contributions to South American Archaeology. George G. Heye Expedition, New York.CrossRefGoogle Scholar
Saville, Marshall H. 1908 Archaeological Researches on the Coast of Esmeraldas, Ecuador. In Verhandlungen des XVI Internalionalen Amerikanisten-Kongresses Sechszehnte Tagung Wien, Vol. 2:331345. Vienna.Google Scholar
Schuler-Schömig, Immina Von 1975 The Gold Treasures of the Americas. Apollo 102(166):2327.Google Scholar
Scott, David A. 1982 Pre-Hispanic Colombian Metallurgy: Studies of Some Gold and Platinum Alloys, Vol. I. Institute of Archaeology, University College, London.Google Scholar
Scott, David A. 1984 Analyses of Goldwork. In Recherches Archéologiques dans la Région de Tumaco (Colombie), by Jean-François Bouchard, 81:48. Mémoire No. 34. Institut Français d’É-tudes Andines, Éditions Recherches sur les Civilisations, Paris.Google Scholar
Scott, David A. 1986 Gold and Silver Alloy Coatings over Copper: An Examination of Some Artefacts from Ecuador and Colombia. Archaeometry 28:3350.CrossRefGoogle Scholar
Scott, David A. 1987 Fusion Gilding and Foil Gilding in Pre-Hispanic Colombia and Ecuador. In 45th Congreso International de Americanistas, edited by Clemencia Plazas de Nieto, pp. 283325. Museo del Oro, Bogotá.Google Scholar
Scott, David A. 1991 Technical Examination of Some Gold Wire from Prehispanic South America. Studies in Conservation 36:6575.CrossRefGoogle Scholar
Scott, David A. 1992 Spanish Colonial and Indigenous Platinum: An Historical Account of Technology and Fabrication. In Conservation of the Iberian and Latin American Cultural Heritage, edited by Henry W. M. Hodges, John S. Mills, and Perry Smith, pp. 148153. Madrid IIC Conference, September 1992. IIC, London.Google Scholar
Scott, David A. 1998 Technical Examination of Ancient South American Metals: Some Examples from Colombia, Peru and Argentina. Boletín, Museo del Oro 44–45:79115.Google Scholar
Scott, David A. 2004 Gold and Platinum Metallurgy of La Tolita: A Metalworking Center of the Pacific Lowlands of Ecuador. In Tecnología del oro antiguo: Europa y América Proceedings of the 1st International Gold Conference, Madrid 2002, edited by Alicia Perea, Ignacio Montero Ruiz, and Óscar Garcéa-Vuelta, pp. 6382. Consejo Superior de Investigaciones Cientificas, Anejos de Archivo Español de Arqueología 32. Ministry of Culture, Madrid.Google Scholar
Scott, David A., and Bouchard, Jean-François 1988 Orfebrería Prehispánica de las llanuras del Pacífico de Ecuador y Colombia. Boletín, Museo del Oro 22:316.Google Scholar
Scott, David A., and Bray, Warwick 1980 Ancient Platinum Technology in South America. Platinum Metals Review 24:147157.Google Scholar
Scott, David A., and Bray, Warwick 1994 Platinum Technology in Ancient South America. In Precolumbian Archaeometry: Papers Presented at the 1992 Archaeometry Conference: UCLA: March 1992, edited by David A. Scott and Pieter Meyers, pp. 285322. Getty Conservation Institute, Los Angeles.Google Scholar
Scott, David A., and Bray, Warwick 1999 Prehispanic PlatinumAlloys: Their Composition and Utilization in Ecuador and Colombia. In La Tecnologia en el Mundo Andino II, edited by Heather N. Lechtman and Ana María Soldi. Autónoma de México, Mexico City.Google Scholar
Scott, David A., and Doehne, Eric 1990 Soldering with Gold Alloys in Ancient South America: Examination of Two Small Gold Studs from Ecuador. Archaeometry 32:183190.CrossRefGoogle Scholar
Stirling, Matthew W. 1972 Archaeologícal Work in Western Ecuador. National Geographic Society Research Reports 1955–1960, Projects 63-177. Washington, D.C. Google Scholar
Texori dell’Ecuador 1973 Exhibition catalog. Institute Italo-Latino Americana, Rome.Google Scholar
Uhle, Max 1924 Cronología y relaciones de las antiquas civilizaciones suramericas. Boletín de la Academica Nacional de Historíu 6:8792.Google Scholar
Uribe, Marie Victoria 1976 Relaciones prehispánicas entre la costa pacífica y el altiplano nariñense. Revista Colombiana de Antropología 20:1324.Google Scholar
Uribe, Marie Victoria 1977–1978 Asentamientos prehispanicas en el altiplano de Ipiales, Colombía. Revista Colombiana de Antropología 21:57195.Google Scholar
Vadillo, Johan 1872 [1537] Carta del Licenciado Johan de Vadillo a su Magestad dandole cuenta de su vista a la Gobernacíon de Cartagena, Octubre 13 de 1537. In Coleccíon de documents iniditos relativos a descrubrimento conquista y organiiacíon de las Antiguas posesiones españolas de América y Oceanía, Sacados de los Archivos del Reino y muy especialmente del de Indias, Vol. 41, edited by Luis Torres de Mendoza, 4548. Imprenta del Hospioio, Madrid.Google Scholar
Valdez, Francisco 1986 Investigaciones arqueológicas en La Tolita (Esmeraldas, Ecuador). Miscelánea Antropológica Ecuatoriana 6:81107.Google Scholar
Valdez, Francisco 1992 Symbols, Ideology and the Expression of Power in La Tolita, Ecuador. In The Ancient Americas: Art from Sacred Landscapes, edited by Richard Townsend, pp. 229243. Art Institute of Chicago, Chicago.Google Scholar
Valdez, Francisco, Gratuze, Bernard, Yépez, Alexandra, and Huitado, Julio 2005 Evidencia temprana de metalurgia en la Costa Pacífica ecuatorial. Boletín, Museo del Oro 53:19.Google Scholar
Verneau, Raymond, and Rivet, Paul 1912–1922 Ethnographie Ancienne de l’Equateur. Vol. 6 of Mission du Service Géographique de d’Armée pour la mésure d’un arc de méridien equatorial en Amérique du Sud, 1899–1906. Gauthier-Villars, Paris.Google Scholar
Vignes, Anthony V., and Badia, Maurice 1971 Interdiffusion and Kirkendaal Shift in Binary Alloys. In Diffusion Processes (Proceedings of the Thomas Graham Memorial Symposium. University of Strathclyde), edited by J. N. Sherwood, A. V. Chadwick, W. M. Muir, and F. L. Swinton, pp. 6775. Gordon and Breach, London.Google Scholar
Weast, Robert C. (editor) 1978 The CRC Handbook of Chemistry and Physics. 59th ed. CRC Press, Baton Rouge.Google Scholar
Weiser, Thoroif, and Schmidt-Thomé, Michael 1993 Platinum-Group Minerals from the Santiago River, Esmeraldas Province, Ecuador. Canadian Mineralogist 31:6173.Google Scholar
Wolf, Theodore 1879 Viajes cientéfécas por la República del Ecuador III. Memoria sobre la geografía y geología de la Provincia de Esmeraldes, con una carta geográfica Guayaquil Imprenta del Comercio. Guayaquil.Google Scholar
Wolf, Theodore 1892 Geografía y geología del Ecuador. Tipografía de F. A. Brockhau, Leipzig.Google Scholar
Zevallos, Menéndez C. 1965–1966 Estudio regional de la orfebrería precolombina de Ecuador. Revista del Museo Nacional de Lima 34:6881.Google Scholar