 |
| Titel |
Multi-disciplinary dating of a baked clay kiln excavated at Chieri, Northern Italy |
| VerfasserIn |
Evdokia Tema, Fulvio Fantino, Enzo Ferrara, Alessandro Lo Giudice, Alessandro Re, Federico Barello, Silvia Vella, Luigi Cirillo, Monica Gulmini |
| Konferenz |
EGU General Assembly 2014
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250093141
|
| Publikation (Nr.) |
 EGU/EGU2014-7600.pdf |
|
|
|
|
|
| Zusammenfassung |
| A combined archaeological, archaeomagnetic and thermoluminescence study has been
carried out on a rescue excavation kiln, discovered at Chieri, Northern Italy. Rock magnetic
experiments indicate the dominance of a low coercivity magnetic phase, such as magnetite
and/or Ti-magnetite as the main carrier of the remanent magnetization. Stepwise thermal
demagnetization experiments generally show a stable characteristic remanent magnetization
(ChRM). The mean archaeomagnetic direction, calculated from 17 independently oriented
samples, is D=18.2o, I=66.8o with α95=2.6o and k=184. Archaeomagnetic dating of the
kiln has been obtained after comparison of the kiln’s ChRM direction with the
reference curves produced by the SHA.DIF.3K European regional geomagnetic field
model.
Independent dating of the kiln has also been obtained from thermoluminescence (TL)
study of two baked clay samples coming from the kiln’s walls. The environmental dose has
been measured in situ using field dosimeters. Accurate TL procedures have been followed for
the calculation of annual dose and eventually the TL age.
The combination of the archaeological evidence, archaeomagnetic and TL datings suggest
that the last usage of the kiln occurred around the 17th century AD. Comparison of the
results obtained from the different methods shows the relevant potential of these
techniques on dating of baked clay artefacts; yet it also highlights the range of
uncertainty sources affecting measurements, related to the samples and/or to the
environment, and the utility of dating cross-checking for obtaining reliable dates. |
|
|
|
|
|
|