TREE-RING DATE LISTS 2018

Abstract

Dates of outermost measured complete rings and sapwood ring number are given in brackets. Complete sapwood is indicated by ‘C’ and where the character of the final ring has been identified, some laboratories signify seasonal felling dates as winter (C), spring (1=4C) and summer (1=2C), referring approximately to October to February, March to May and June to September respectively; ‘c’ indicates the presence of complete sapwood but not on the sample; ‘h/s’ indicates the presence of the heartwood-sapwood boundary; ‘NM’ indicates rings counted but not measured. Superscript numbers, e.g. ‘’, denote two or more samples with the same end date and sapwood complement. Unless otherwise stated, sapwood estimates are those of Miles, “The Interpretation, Presentation and Use of Tree-ring Dates.” Felling date ranges for which the sapwood estimate has been refined using the Dendro function of OxCal (Miles, “Refinements in the Interpretation of Tree-ring Dates”) are given in italics to indicate that they are ‘interpretative’, with the unrefined date in brackets. Site Master gives the years spanned and three highest or representative t-values. All timbers dated are of oak, Quercus spp., unless otherwise stated. References to the master sequences are not printed but are available from the editor on request. RRS [Historic England Research Report Series] reports may be downloaded or obtained as hard copy from Historic England; their address and the list of available reports published in 2017 are printed below, p. 151. Images of selected buildings are included on pages 146–150.