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Developing Archaeomagnetic Dating in Britain in the First Millennium AD
Wilkinson, Ann
Wilkinson, Ann
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The University of Bradford theses are licenced under a Creative Commons Licence.
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University of Bradford
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School of Archaeological and Forensic Sciences. Faculty of Life Sciences
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2023
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PhD Thesis
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Abstract
Archaeomagnetic dating involves the measurement of the remanent magnetisation in archaeological materials acquired through thermoremanent or depositional remanent magnetisation; and comparison with a record of changes in the Earth’s magnetic field through time, known as a secular variation curve. The current British curve has been constructed from a dataset consisting of 908 magnetic directions which have been collated from over 60 years of archaeomagnetic studies.
Inspection of the current British directional dataset has indicated an uneven distribution of directions through time and geographical location. Whilst there is good representation of directions spanning the Roman period of the first millennium AD; the Early Medieval period has a significant paucity of directions in the range from AD400 to AD700. This research has focused on the acquisition of new directional data relating to the first millennium AD acquired from a programme of fieldwork and desk based study.
The research has identified 50 new directions which could be incorporated with the 908 directions in the current dataset and could potentially be used in a revision of the British secular variation curve.
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Thesis
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PhD