TY - JOUR
T1 - Further Evidence of High Intensity During the Levantine Iron Age Anomaly in Southwestern Europe
T2 - Full Vector Archeomagnetic Dating of an Early Iron Age Dwelling From Western Spain
AU - García-Redondo, N.
AU - Calvo-Rathert, M.
AU - Carrancho,
AU - Goguitchaichvili, A.
AU - Iriarte, E.
AU - Blanco-González, A.
AU - Dekkers, M. J.
AU - Morales-Contreras, J.
AU - Alario-García, C.
AU - Macarro-Alcalde, C.
N1 - Funding Information:
N.G.R. acknowledges the financial support given by the Junta de Castilla y Le?n and the European Research and Development Fund (ERDF). Financial support for this work was obtained from Junta de Castilla y Le?n (project BU235P18) and the European Regional Development Fund (ERDF) and the PID2019-105796GB-I00 of the Agencia Estatal de Investigaci?n (AEI/10.13039/501100011033). Special thanks are also due to the ?Fort Hoofddijk? paleomagnetic group in Utrecht University for their support and help during a short internship carried out by one of us (N.G.R). A.B.G. acknowledges the Council of Salamanca and the research project PID2019-104349GA-I00 funded by the Spanish Ministry of Science and Innovation. Huapei Wang and an anonymous reviewer as well as editor Isabelle Manighetti are acknowledged for their constructive and helpful review and comments, which helped to improve the manuscript.
Funding Information:
N.G.R. acknowledges the financial support given by the Junta de Castilla y León and the European Research and Development Fund (ERDF). Financial support for this work was obtained from Junta de Castilla y León (project BU235P18) and the European Regional Development Fund (ERDF) and the PID2019‐105796GB‐I00 of the Agencia Estatal de Investigación (AEI/10.13039/501100011033). Special thanks are also due to the “Fort Hoofddijk” paleomagnetic group in Utrecht University for their support and help during a short internship carried out by one of us (N.G.R). A.B.G. acknowledges the Council of Salamanca and the research project PID2019‐104349GA‐I00 funded by the Spanish Ministry of Science and Innovation. Huapei Wang and an anonymous reviewer as well as editor Isabelle Manighetti are acknowledged for their constructive and helpful review and comments, which helped to improve the manuscript.
Publisher Copyright:
© 2021. The Authors.
PY - 2021/9
Y1 - 2021/9
N2 - We report an archeomagnetic study from the Early Iron Age archeological site of Cerro de San Vicente (Salamanca, Spain). The studied materials were sampled from one roundhouse and its central fireplace, a surrounding burnt floor, and slags with a twofold objective. First, to archeomagnetically determine the last use of the central fireplace, because dating with other methods was imprecise. Second, to retrieve information about the Earth's magnetic field in Western Europe from a period when the Levantine Iron Age Anomaly (LIAA) has been occasionally reported. This study includes mineralogical, archeomagnetic directional analyses, and multimethod archeointensity determinations. Paleomagnetic analyses of the central fireplace yield a mean direction: declination D = 15.1°, inclination I = 52.5°; k = 477.1, and α95 = 5.6°. Archeointensity determinations yield a mean anisotropy-corrected archeointensity of 72.4 ± 2.0 μT (74.7 ± 4.3 μT if a pTRM-check correction is applied) on the central fireplace and 48.2 ± 2.0 μT on slags. A full-vector archeomagnetic dating was performed with the SHA.DIF.4k geomagnetic field model which yielded an age interval of last use of the central fireplace between 644 and 575 BCE (654–575 BCE with the pTRM-check corrected data) at 95% confidence level. This date agrees with the archeological context. Results allows to place the high paleointensity obtained near the maximum observed in Iberia at this age, confirming the existence of this peak related to the LIAA in Western Europe where records of this feature are still scarce.
AB - We report an archeomagnetic study from the Early Iron Age archeological site of Cerro de San Vicente (Salamanca, Spain). The studied materials were sampled from one roundhouse and its central fireplace, a surrounding burnt floor, and slags with a twofold objective. First, to archeomagnetically determine the last use of the central fireplace, because dating with other methods was imprecise. Second, to retrieve information about the Earth's magnetic field in Western Europe from a period when the Levantine Iron Age Anomaly (LIAA) has been occasionally reported. This study includes mineralogical, archeomagnetic directional analyses, and multimethod archeointensity determinations. Paleomagnetic analyses of the central fireplace yield a mean direction: declination D = 15.1°, inclination I = 52.5°; k = 477.1, and α95 = 5.6°. Archeointensity determinations yield a mean anisotropy-corrected archeointensity of 72.4 ± 2.0 μT (74.7 ± 4.3 μT if a pTRM-check correction is applied) on the central fireplace and 48.2 ± 2.0 μT on slags. A full-vector archeomagnetic dating was performed with the SHA.DIF.4k geomagnetic field model which yielded an age interval of last use of the central fireplace between 644 and 575 BCE (654–575 BCE with the pTRM-check corrected data) at 95% confidence level. This date agrees with the archeological context. Results allows to place the high paleointensity obtained near the maximum observed in Iberia at this age, confirming the existence of this peak related to the LIAA in Western Europe where records of this feature are still scarce.
KW - archeointensity
KW - archeomagnetism
KW - geomagnetic field changes
KW - Iberian Peninsula
KW - Levantine Iron Age Anomaly
UR - http://www.scopus.com/inward/record.url?scp=85115736176&partnerID=8YFLogxK
U2 - 10.1029/2021JB022614
DO - 10.1029/2021JB022614
M3 - Article
AN - SCOPUS:85115736176
SN - 2169-9313
VL - 126
SP - 1
EP - 19
JO - Journal of Geophysical Research: Solid Earth
JF - Journal of Geophysical Research: Solid Earth
IS - 9
M1 - e2021JB022614
ER -