The use of tree-ring widths as a means of dating timbers from historical sites
Techniques for the extraction of cores from dry historical timbers have been developed. A microcomputerbased ring-width measuring and recording system has been successfully designed and operated. Historical oak structures from the south of England have yielded site chronologies from various historical periods, which cross-match with reference material from throughout the British Isles. These show that, in some circumstances, it is possible to date structures from only a few samples. The historical chronologies did not provide sufficient evidence to be able to either accept or reject the oak-growth model proposed by Fletcher (1978), but they indicate that it is not likely to be valid. Studies on living trees from three sites in East Anglia show that cross-matching between sites from several parts of the British Isles is possible. They suggest that there is no association between the distance apart and the level of agreement either between sites, or between individual trees within a wood. An association between the level of agreement between two sites, and the site conditions in respect of soils, re1 ief and annual precipitation levels is however, indicated. The Fritts model for the production of ~complacent
Bridge, M. C.
Archaeology
The use of tree-ring widths as a means of dating timbers from historical sites. Techniques for the extraction of cores from dry historical timbers have been developed. A microcomputerbased ring-width measuring and recording system has been successfully designed and operated. Historical oak structures from the south of England have yielded site chronologies from various historical periods, which cross-match with reference material from throughout the British Isles. These show that, in some circumstances, it is possible to date structures from only a few samples. The historical chronologies did not provide sufficient evidence to be able to either accept or reject the oak-growth model proposed by Fletcher (1978), but they indicate that it is not likely to be valid. Studies on living trees from three sites in East Anglia show that cross-matching between sites from several parts of the British Isles is possible. They suggest that there is no association between the distance apart and the level of agreement either between sites, or between individual trees within a wood. An association between the level of agreement between two sites, and the site conditions in respect of soils, re1 ief and annual precipitation levels is however, indicated. The Fritts model for the production of ~complacent
use tree ring width mean date timber historical site techniques extraction core dry historical timber develop ring width measure record system successfully design operate historical oak structure south england yield site chronology various historical_period cross match reference material throughout british_isles show circumstance possible date structure sample historical chronology provide_sufficient evidence able either accept_reject oak growth model_propose indicate likely valid studies live tree three_site east_anglia show cross matching site several part british_isles possible suggest association distance apart level agreement either sit individual tree within wood association level agreement two_site site condition respect soil annual level however indicate model production