Wiggle-Matching Using Known-Age Pine from Jermyn Street, London

Tyers, Cathy; Sidell, Jane; Plicht, Johannes van der; Marshall, P.; Ramsey, Christopher Bronk; Bayliss, Alex

doi:10.1017/s0033822200055788

Cited by 12 publications

(12 citation statements)

References 34 publications

(44 reference statements)

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“…These sample spans mean that 65-100% of the information on the short-term variability driven by the Schwabe cycle, with its 9-14-yr periodicity, becomes attenuated (Beer et al 2012) and so the calibration data contain insufficient short-term variability to allow for good wiggle-matches. This is further supported by the study of Tyers et al (2009), who showed that on the parts of the calibration curve based upon single-ring data, single-ring wiggle-matches appear to have a good chance of success. Therefore, the need to avoid single rings is specific to the parts of the calibration curve underpinned by An intuitive answer can be attained from the basic principles of the wiggle-match dating technique.…”

Section: Discussion 1: Sample Spansmentioning

confidence: 61%

Refining the Hallstatt Plateau: Short-Term¹⁴C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

et al. 2017

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ABSTRACT. Radiocarbon ( 14 C) wiggle-match dating is a technique with a substantial potential to improve the precision of dating timbers in situations where dendrochronology is not tenable. However, one of the key reasons why obtaining a dendrochronological determination might be difficult is the short-lived nature of timbers on a range of archaeological sites, something that also affects the efficiency of the wiggle-match dating technique. Combined with the potential for high expense that the technique presents, it is paramount that wiggle-match dating research design has a good empirical basis. To this end we dated 50 consecutive, individual rings from a timber that grew during the Hallstatt radiocarbon calibration plateau (ca. 750-400 cal BC) in southwest Scotland. The results indicate that (1) the precision and accuracy of wiggle-match dates carried out on short-lived sequences during the Hallstatt plateau may suffer due to insufficient resolution of the calibration data, (2) sampling time-frames roughly equivalent to the underpinning calibration data are recommended (for the period in question this means decadal blocks), and (3) short-lived sequences are at risk of losing accuracy if the actual past trend of radiocarbon diverges from the mean of the radiocarbon calibration curve.

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Section: Discussion 1: Sample Spansmentioning

confidence: 61%

Refining the Hallstatt Plateau: Short-Term¹⁴C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

et al. 2017

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“…Radiocarbon wiggle-matching has previously been undertaken on part of a 303-ring pine series dated by dendrochronology to AD 1367-1670 from Jermyn Street, London (Tyers et al 2009). In this study, measurements from three participating AMS laboratories all provided accurate wiggle-matches from ring series covering a century or more.…”

Section: Methodsmentioning

confidence: 99%

14C wiggle-matching of short tree-ring sequences from post-medieval buildings in England

Marshall

Bayliss

Farid

et al. 2019

Nuclear Instruments and Methods in Physics Research Section B:

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This study tests whether accurate dating by AMS radiocarbon wigglematching short tree-ring series (c. 30 annual rings) in the period after AD 1510 can be achieved routinely. Such an approach has proved problematic for some intervals in the period AD 1160-1541 (Bayliss et al. 2017), which are before single-year calibration data are available (Stuiver 1993). We suggest that such calibration data are essential if this approach is to be employed for the informed conservation of standing buildings.

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“…A previous study, in which we had successfully wiggle-matched part of a 303-ring pine series dating to AD 1367-1670 from Jermyn Street, London (Tyers et al 2009), suggested that AMS laboratories could now provide the level of precision and accuracy required for such applications. We therefore determined to test whether we can provide accurate dating by wiggle-matching short tree-ring series (c. 30 annual rings) in the medieval period.…”

Section: The Datasetmentioning

confidence: 99%

Informing Conservation: Towards ¹⁴C Wiggle-Matching of Short Tree-Ring Sequences from Medieval Buildings in England

Bayliss¹,

Marshall²,

Tyers³

et al. 2016

Radiocarbon

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This study tested whether accurate dating by AMS radiocarbon wiggle-matching short tree-ring series (c. 30 annual rings) in the medieval period could be achieved., Scientific dating plays a central role in the conservation of historic buildings in England. Precise dating helps assess the significance of particular buildings or elements of their fabric, thus allowing us to make informed decisions about their repair and protection. Consequently considerable weight, both financial and legal, can be attached to the precision and accuracy of this dating. Dendrochronology is the method of choice, but in a proportion of cases this is unable to provide calendar dates. Hence we would like to be able to use radiocarbon wiggle-matching to provide a comparable level of precision and reliability, particularly on shorter tree-ring sequences (c. 30 annual growth rings) that up until now would not routinely be sampled. We present the results of AMS wiggle-matching five oak tree-ring sequences, spanning the period covered by the vast majority of surviving medieval buildings in England (c. AD 1180-1540) when currently we have only decadal and bidecadal calibration data BackgroundOver the past 25 years scientific dating has become an integral part of the processes for conservation and repair of historic buildings in England. Precise dating informs decisions about the preservation of buildings, allows us to identify significant fabric, and aids in the specification of appropriate repair strategies. Small differences in date can lead to great differences in the significance of the extant building, and thus to great differences in the costs of the agreed solution for a particular case.Outcomes of this sort clearly demonstrate the value of precise dating in informing repair and conservation decisions for historic buildings, and have led to dendrochronology becoming widely applied as part of these processes. In consequence, Historic England (and its predecessor, English Heritage) alone has funded tree-ring dating on more than 1500 buildings over the past 20 years to inform such decisions. The ProblemIn providing the required precise dating for historic buildings in England, the scientific dating method of choice is dendrochronology. The vast majority of medieval buildings in England are constructed of oak, which is widely and successfully dated (English Heritage 1998). There are three situations, however, in which tree-ring analysis may fail to produce calendar dating. 1) When a building produces oak tree-ring sequences which simply do not match against the available reference chronologies, 2) When a building is constructed from a species other than oak, 3) When the timbers in a building contain less than the 50 rings which is normally required for successful dendrochronology.Of these three situations, the length of the available oak tree-ring sequences is by far the most common limitation. It is clear that the probability that an oak sequence will remain undated is inversely related to the number of tree-rings in the sequence ...

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Wiggle-Matching Using Known-Age Pine from Jermyn Street, London

Cited by 12 publications

References 34 publications

Refining the Hallstatt Plateau: Short-Term¹⁴C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

Refining the Hallstatt Plateau: Short-Term¹⁴C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

14C wiggle-matching of short tree-ring sequences from post-medieval buildings in England

Informing Conservation: Towards ¹⁴C Wiggle-Matching of Short Tree-Ring Sequences from Medieval Buildings in England

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Wiggle-Matching Using Known-Age Pine from Jermyn Street, London

Cited by 12 publications

References 34 publications

Refining the Hallstatt Plateau: Short-Term14C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

Refining the Hallstatt Plateau: Short-Term14C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

14C wiggle-matching of short tree-ring sequences from post-medieval buildings in England

Informing Conservation: Towards 14C Wiggle-Matching of Short Tree-Ring Sequences from Medieval Buildings in England

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Resources

About

Refining the Hallstatt Plateau: Short-Term¹⁴C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

Refining the Hallstatt Plateau: Short-Term¹⁴C Variability and Small Scale Offsets in 50 Consecutive Single Tree-Rings from Southwest Scotland Dendro-Dated to 510–460 BC

Informing Conservation: Towards ¹⁴C Wiggle-Matching of Short Tree-Ring Sequences from Medieval Buildings in England