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Termoluminiscencia vs. arqueomagnetismo: datación absoluta de fragmentos cerámicos prehispánicos de los Andes noroccidentales (Piedras Blancas, Medellín, Colombia)

Authors: Obregón, Mauricio; Ramírez Luna, Ángel; Goguitchaichvili, Avto; Cejudo, Ruben; Morales, Juan; Cervantes Solano, Miguel; Greco Mainero, Mariano Catriel;

Termoluminiscencia vs. arqueomagnetismo: datación absoluta de fragmentos cerámicos prehispánicos de los Andes noroccidentales (Piedras Blancas, Medellín, Colombia)

Abstract

Las dataciones absolutas realizadas tanto mediante arqueomagnetismo como por termoluminiscencia ofrecen aportaciones cronológicas importantes debido a que la datación se hace directamente sobre el objeto quemado. Esto no sucede así con la datación por radiocarbono, que es el método más utilizado en arqueología. En este trabajo hemos determinado la arqueointensidad absoluta geomagnética registrada en fragmentos cerámicos provenientes de los Andes noroccidentales (Colombia), los cuales habían sido previamente datados mediante el método de termoluminiscencia. Las muestras estudiadas consisten en un fragmento cerámico de olla asociado a un contexto doméstico y otro fragmento de volante de uso troncocónico, con decoración incisa fina rellena de pasta blanca, hallados en el sitio arqueológico Piedras Blancas (Medellín, Colombia). Los intervalos de edades obtenidos mediante el método arqueomagnético son relativamente amplios debido a la escasa precisión de la curva de referencia de variación secular para el intervalo de edad considerado. En cambio, la termoluminiscencia aporta edades absolutas mejor definidas y de mayor precisión.

Absolute dating by means of archaeomagnetism and thermoluminescence offer important chronological contributions because burned objects are dated directly. This is not true for the most common absolute dating method used in archaeology today, radiocarbon dating. In this survey we have determined the absolute geomagnetic archaeointensity recorded in ceramic fragments from the northwestern Andes (Colombia) which had previously been dated using thermoluminescence. The samples studied consist of a ceramic pot fragment associated with a domestic context and a truncated-cone shaped spindle whorl fragment with thin incised decoration and filled with white paste found at the Piedras Blancas archaeological site (Medellin, Colombia). The age ranges obtained by the archaeomagnetic method are relatively high due to the insufficient precision of the secular variation reference curve for the age interval considered, while thermoluminescence provides better defined and more accurate absolute ages.

Fil: Greco Mainero, Mariano Catriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina

Fil: Cervantes Solano, Miguel. Universidad Nacional Autónoma de México; México

Fil: Goguitchaichvili, Avto. Universidad Nacional Autónoma de México; México

Fil: Ramírez Luna, Ángel. Universidad Nacional Autónoma de México; México

Fil: Obregón, Mauricio. Universidad Nacional Autónoma de México; México

Fil: Cejudo, Ruben. Universidad Nacional Autónoma de México; México

Fil: Morales, Juan. Universidad Nacional Autónoma de México; México

Country
Argentina
Keywords

Medellin, Medellín, archaeomagnetism, Termoluminiscencia, Absolute dating methods, Colombia, Métodos de datación absoluta, https://purl.org/becyt/ford/1.5, https://purl.org/becyt/ford/6.1, https://purl.org/becyt/ford/6, northwestern Andes, https://purl.org/becyt/ford/1, Arqueomagnetismo, thermoluminescence

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