Developments in archaeomagnetic dating in britain
In 2009 the Ness was recognised by the American Institute of Archaeology; in 2011 it won the Current Archaeology Research Project of the Year; and in 2012 was awarded the international Andante Travel Archaeology Award, having been runner up in 2008.Nick has lectured widely in the UK and abroad at all levels on the Ness excavations, the WHS and Orcadian archaeology in general.
The date ranges for 232 magnetic directions from 98 Iron Age sites were reviewed and a programme of fieldwork produced 25 new magnetic directions from 11 Iron Age sites across Britain.
Water-lain sediments may acquire a datable detrital remanent magnetization from the alignment of their magnetic grains by the ambient field during deposition (Fig.
The magnetized grains then settle and become immobilized, retaining a record of the direction of the geomagnetic field at their deposition.
This effect allows deposits in wells, ditches, and streams to be dated.
This contribution to the discipline focused on the first millennium BC, as there is evidence that during this time the Earth’s magnetic field experienced rapid changes in direction.