RT info:eu-repo/semantics/article
T1 New high precision full-vector archaeomagnetic data from a roman kiln in Mérida (Spain)
A1 García Redondo, Natalia
A1 Calvo Rathert, Manuel
A1 Carrancho Alonso, Ángel
A1 Bustamante Álvarez, Macarena
K1 Archaeomagnetism
K1 Archaeointensity
K1 Paleoecular variation curve
K1 Magnetic properties
K1 Roman period
K1 Iberian Peninsula
K1 Magnetismo
K1 Magnetism
K1 Arqueología
K1 Archaeology
AB This study presents new high precision age and full-vector archaeomagnetic data from a kiln excavated in the Roman archaeological site of Mitreo's house (Mérida, Badajoz, Spain). The age of the kiln was obtained by the stratigraphic method and by the ceramological study of the italic and sigillata pottery found with a very precise age date of 55 ± 15 years AD. Rock-magnetic experiments pointed towards magnetite as the main carrier of remanence and highly reversible thermomagnetic curves suggested that the studied samples were suitable for archaeoeointensity determinations.Paleomagnetic experiments including thermal and stepwise alternating field demagnetization yielded the following mean direction for the kiln: declination D = 0.6°; inclination I = 54.0°; (k = 481; α95 = 2.5°). Archaeointensityexperiments with the Thellier – Coe protocol on 28 samples yielded successful determinations in 27 cases. Anisotropy factors between 0.90 and 1.04 were obtained from anisotropy of thermoremanent magnetization (ATRM) experiments. A mean anisotropy-corrected archaeointensity value F = 56.3 ± 5.5 μT was obtained.The geomagnetic model SHA.DIF.14 k was used for an archaeomagnetic dating yielding a chronological interval between 40 BCE and 150 CE. This low age resolution when compared with the pottery-based age data is related to the behavior of the geomagnetic field in the Iberian Peninsula during the Roman period, which does not allow to differentiate well between results corresponding to those centuries. However, it is also related to the fact that the Iberian archaeomagnetic dataset in the analysed time range is highly scattered. A high quality full-vector data with a very precise age have been obtained which contribute to improve the Iberian secular variation curve and geomagnetic databases.
PB Elsevier
SN 0031-9201
YR 2020
FD 2020-12
LK http://hdl.handle.net/10259/6102
UL http://hdl.handle.net/10259/6102
LA eng
NO Project BU235P18 (Junta de Castilla y Leon, Spain) and the European Regional Development Fund (ERDF) and the PID2019-105796GB-I00 of the Agencia Estatal de Investigación (AEI / 10.13039/501100011033). N-G.R acknowledges the financial support given by the Junta de Castilla y León and the European Union (ERDF funding). MCR acknowledges funding from the Fulbright Commission and the Spanish Ministry of Science, Innovation and Universities for a research stay at Hawaii University at Manoa. Thanks to the archaeological team who worked at the site. MBA acknowledges the following project: “Corpus Vasorum Hispanorum. Analisis tipológico, cronológico y prosopográfico de los sigilla en terra sigillata hispanica a partir de los centros consumidores. Parte I: Lusitania” (PGC2018-093478-A-I00 – Convocatoria Proyectos de Excelencia – Plan Estatal de Generación de Conocimiento – Ministerio de Ciencia, Innovación y Universidades – España).
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024