Dataciones de contextos aborígenes y coloniales de la isla de Gran Canaria: una propuesta de protocolo de higiene radiocarbónica

Abstract

El radiocarbono puede presentar problemas relacionados con la naturaleza de la muestra fechada, los propios del método y la fiabilidad estratigráfica del contexto fechado. Por ello, el principal objetivo de este trabajo consiste en efectuar una exploración sistemática de cada uno de ellos. Para ello ha sido realizada una revisión crítica de las fechas radiocarbónicas efectuadas en materiales procedentes de contextos arqueológicos de la isla de Gran Canaria. Este análisis ha permitido elaborar un sistema de rangos de fiabilidad radiométrica al tiempo que ha pretendido establecer, sobre la base de criterios objetivos de análisis, la fiabilidad de las fechas radiométricas obtenidas en contextos arqueológicos del archipiélago canario y, en particular, de la isla de Gran Canaria

Who, Why, When, and Where From? The Peopling of the Canary Islands and the Challenges of Archaeometry

“…Chronologies, both radiocarbon and dated aDNA data, are contested in Canarian archaeology (for a comprehensive list of radiocarbon measurements published in the Canaries, see the bibliography cited in this section and sources therein). Some researchers dispute the validity of key dates obtained from long-lived materials such as wood or charcoal (Pardo-Gordó et al, 2022) et al, 2022). Other issues affecting human collagen radiocarbon dating include a lack of consideration for the calibration of chronometric measurements such as the marine carbon reservoir effect (MCRE) and the establishment of a local regional (ΔR) offset (Pardo-Gordó et al, 2022).…”

“…Chronologies, both radiocarbon and dated aDNA data, are contested in Canarian archaeology (for a comprehensive list of radiocarbon measurements published in the Canaries, see the bibliography cited in this section and sources therein). Some researchers dispute the validity of key dates obtained from long-lived materials such as wood or charcoal (Pardo-Gordó et al, 2022). Insufficient stratigraphic context or doubtful laboratory practices contribute to the scepticism (Velasco-Vázquez et al, 2020) surrounding the utilization of chronologies proposing a Late Bronze and Early Iron Age human settlement (Atoche-Peña & del-Arco-Aguilar, 2023).…”

The 14Canarias web application. An interactive radiocarbon database for the Canary Islands

“…Also, if a 14 C has contradictory information in several references, the original publication prevails if there is no evidence to the contrary. Likewise, the database has a specific file 14CanariasHIG.csv corresponding to the quality of the radiocarbon data according to the recently designed radiocarbon hygiene proposal for the Canary Islands [18]. Some dates have the reference out which means that those dates do not meet some of the current acceptance standards (Carbon-Nitrogen correlation and/ or laboratory consistency).…”

“…In this table, radiocarbon dates are identified according to the radiometric hygiene protocol [18]. Each record has its Id_date, the radiocarbon laboratory code (IdMuestra), and the value of feasibility (Rango fiabilidad).…”

“…", it is correct. The reason for this is that the selected site only has dates from the Gakushuin laboratory (GaK) and, due to its problems [18,19], this function does not consider them.…”