High-precision radiocarbon dating of the construction phase of Oakbank Crannog, Loch Tay, Perthshire
Open accessAbstract
Many of the Loch Tay crannogs were built in the Early Iron Age and so calibration of the radiocarbon ages produces very broad calendar age ranges due to the well-documented Hallstatt plateau in the calibration curve. However, the large oak timbers that were used in the construction of some of the crannogs potentially provide a means of improving the precision of the dating through subdividing them into decadal or subdecadal increments, dating them to high precision and wiggle-matching the resulting data to the master 14C calibration curve. We obtained a sample from 1 oak timber from Oakbank Crannog comprising 70 rings (Sample OB06 WMS 1, T103) including sapwood that was complete to the bark edge. The timber is situated on the northeast edge of the main living area of the crannog and as a large and strong oak pile would have been a useful support in more than 1 phase of occupation and may be related to the earliest construction phase of the site. This was sectioned into 5-yr increments and dated to a precision of approximately ±8–16 14C yr (1 σ). The wiggle-match predicts that the last ring dated was formed around 500 BC (maximum range of 520–465 BC) and should be taken as indicative of the likely time of construction of Oakbank Crannog. This is a considerable improvement on the estimates based on single 14C ages made on oak samples, which typically encompassed the period from around 800–400 BC.
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When radiocarbon ages between 2650 and 2350 BP are calibrated, they typically incorporate the same 250-300 year time range.
“When radiocarbon ages between 2650 and 2350 BP are calibrated, they typically incorporate the same 250–300 year time range.”
From Bayesian Modeling and Chronological Precision for Polynesian Settlement of Tonga (2015) · cites this paper as [29]
All of the Polynesian Plainware phase dates in Tonga fall within a segment of the radiocarbon calibration curve that is substantially flattened, referred to as the "Early Iron Age" or "Hallstatt Plateau".
“Second, all of the Polynesian Plainware phase dates in Tonga fall within a segment of the radiocarbon calibration curve that is substantially flattened. This is referred to as the “Early Iron Age” or “Hallstatt Plateau” [29].”
From Bayesian Modeling and Chronological Precision for Polynesian Settlement of Tonga (2015) · cites this paper as [29]
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Cites
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Research works printed but not linked: 1
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Bayesian Modeling and Chronological Precision for Polynesian Settlement of Tonga
Burley, D., Edinborough, K., Weisler, M., & Zhao, J.-X. (2015) · PLOS ONE · doi:10.1371/journal.pone.0120795 · Cited by 78 · see citing works
- Authors
- Cook, G. T., Dixon, T. N., Russell, N., Naysmith, P., Xu, S., & Andrian, B.
- Affiliations
- Scottish Universities Environmental Research Centre (GB)
- Corresponding author
- Cook, G T
- Venue
- Radiocarbon
- Publisher
- Cambridge University Press (CUP)
- Published
- 2010
- Volume
- 52
- Issue
- 2
- Pages
- 346-355
- ISSN
- 0033-8222 (ISSN-L)
- 1945-5755
- OpenAlex
- W2109581029
- Cited by
- 12
- References
- 10
- Citations by year
- 2024: 1 · 2021: 1 · 2018: 1 · 2017: 3 · 2015: 2 · 2014: 2 · 2013: 1 · 2012: 1
- FWCI
- 0.45
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Radiocarbon (publishedVersion)
- ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion)
- UA Campus Repository (The University of Arizona) (acceptedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Archaeology and ancient environmental studies
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Tree-ring climate responses
- Social Sciences › Arts and Humanities › Archeology › Ancient and Medieval Archaeology Studies
- Keywords
- crannogs, radiocarbon wiggle-matching, oak timber, Early Iron Age, radiocarbon calibration, sapwood
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