scholarly journals Radiocarbon Calibration Data for the 6th to the 8th Millennia BC

Radiocarbon ◽  
1986 ◽  
Vol 28 (2B) ◽  
pp. 954-960 ◽  
Author(s):  
Bernd Kromer ◽  
Monika Rhein ◽  
Michael Bruns ◽  
Hildegard Schoch-Fischer ◽  
Karl Otto Münnich ◽  
...  
Keyword(s):  
Tree Ring ◽  
Data Sets ◽  
Calibration Data ◽  
Calibration Curves ◽  
Oak Tree ◽  
Existing Data ◽  
Radiocarbon Calibration

14C calibration curves derived from South German oak tree-ring series are presented. They cover the interval between 4400 and 7200 BC complementing existing data sets and extending them to older periods. The atmospheric 14C level before 6200 BC no longer follows the long-term sinusoidal trend fitted to the bristlecone data. This observation is supported by a tentative match of the Main 9 series.

scholarly journals Tree-Ring Dating and Radiocarbon Calibration in South-Central Europe

Radiocarbon ◽  
1980 ◽  
Vol 22 (2) ◽  
pp. 219-226 ◽  
Author(s):  
Bernd Becker
Keyword(s):  
Central Europe ◽  
Tree Ring ◽  
South Central ◽  
Growth Variation ◽  
Bristlecone Pine ◽  
Climatic Regime ◽  
Oak Tree ◽  
La Jolla ◽  
Radiocarbon Calibration

Radiocarbon variations between 3900 and 2800 bc have been established in La Jolla and Groningen using oak tree rings from a 2350-year floating oak series. Comparison of these variations with the bristlecone pine 14C variations provides precise ages for tree-ring dates of Neolithic settlements of Switzerland and Germany over a period of 1400 years. 14C variations measured in Heidelberg in absolutely dated oak-ring series from ad 250 to 720 show trends similar to those of long-term growth variation of oaks during the same period of time. The influence of the climatic regime on oak growth of this period is discussed.

scholarly journals Revision and Tentative Extension of the Tree-Ring Based 14C Calibration, 9200–11,855 cal BP

Radiocarbon ◽  
1998 ◽  
Vol 40 (3) ◽  
pp. 1117-1125 ◽  
Author(s):  
Bernd Kromer ◽  
Marco Spurk
Keyword(s):  
Tree Ring ◽  
Time Scale ◽  
Close Agreement ◽  
Data Sets ◽  
Calibration Data ◽  
Data Set ◽  
Calibration Data Set ◽  
Age Range ◽  
Radiocarbon Calibration

We report radiocarbon calibration data based on the revised German oak and pine series. The age range of the absolutely dated German oak series has been extended to 10,430 cal bp. The German pine series is tentatively linked to the oak series by 14C, and now reaches back to 11,871 cal bp (±20 yr). The revisions of the tree-ring time scale of the German oak chronology solved long-standing apparent discrepancies in the mid-Holocene 14C calibration data sets. The calibration data set based on the floating German pine is now in close agreement with the Preboreal part of 14C calibration series obtained from most varve chronologies and corals.

scholarly journals Cariaco Basin Calibration Update: Revisions to Calendar and 14C Chronologies for Core Pl07-58Pc

Radiocarbon ◽  
2004 ◽  
Vol 46 (3) ◽  
pp. 1161-1187 ◽  
Author(s):  
Konrad A Hughen ◽  
John R Southon ◽  
Chanda J H Bertrand ◽  
Brian Frantz ◽  
Paula Zermeño
Keyword(s):  
Tree Ring ◽  
Cariaco Basin ◽  
Calibration Data ◽  
Data Set ◽  
Varve Chronology ◽  
Pine Tree ◽  
Tree Ring Data ◽  
Calibration Data Set ◽  
Recent Version ◽  
Radiocarbon Calibration

This paper describes the methods used to develop the Cariaco Basin PL07-58PC marine radiocarbon calibration data set. Background measurements are provided for the period when Cariaco samples were run, as well as revisions leading to the most recent version of the floating varve chronology. The floating Cariaco chronology has been anchored to an updated and expanded Preboreal pine tree-ring data set, with better estimates of uncertainty in the wiggle-match. Pending any further changes to the dendrochronology, these results represent the final Cariaco 58PC calibration data set.

scholarly journals Selection and Treatment of Data for Radiocarbon Calibration: An Update to the International Calibration (IntCal) Criteria

Radiocarbon ◽  
2013 ◽  
Vol 55 (4) ◽  
pp. 1923-1945 ◽  
Author(s):  
Paula J Reimer ◽  
Edouard Bard ◽  
Alex Bayliss ◽  
J Warren Beck ◽  
Paul G Blackwell ◽  
...  
Keyword(s):  
Calibration Curve ◽  
Quality Data ◽  
Calibration Data ◽  
High Quality ◽  
High Quality Data ◽  
Surface Ocean ◽  
Basic Assumptions ◽  
Calibration Curves ◽  
Curve Model ◽  
Radiocarbon Calibration

High-quality data from appropriate archives are needed for the continuing improvement of radiocarbon calibration curves. We discuss here the basic assumptions behind 14C dating that necessitate calibration and the relative strengths and weaknesses of archives from which calibration data are obtained. We also highlight the procedures, problems, and uncertainties involved in determining atmospheric and surface ocean 14C/12C in these archives, including a discussion of the various methods used to derive an independent absolute timescale and uncertainty. The types of data required for the current IntCal database and calibration curve model are tabulated with examples.

Rapid human response to Late Glacial climate change: a reply to Housley et al. (2000)

Antiquity ◽  
2000 ◽  
Vol 74 (284) ◽  
pp. 427-428 ◽  
Author(s):  
S. P. E. Blockley ◽  
R. E. Donahue ◽  
A. M. Pollard
Keyword(s):  
Climate Change ◽  
Late Glacial ◽  
Calibration Data ◽  
Human Response ◽  
Weak Correlation ◽  
Two Stage ◽  
Calibration Curves ◽  
Colonization Model ◽  
Glacial Climate ◽  
Radiocarbon Calibration

In their reply to our recent paper (Blockley et al.2000), Housley et ~ l(2.0 00) make four substantialpoints. Firstly, they assert that our critique oftheir two-stage re-colonization model rests solelyupon radiocarbon calibration. Secondly, and consequently,they point to problems with Late Glacialcalibration curves. Thirdly, they argue thatradiocarbon calibration should be advanced onlyfor sound archaeological reasons. Finally, theystate that our approach is environmentally deterministicand that we have demonstrated onlya weak correlation between human demographicchange and rapid climatic amelioration.Housley et al. (2000) argue against the use ofLate Glacial calibration curves, and in particularstate that 'it is because the calibration data are soheavily smoothed that Blockley et al. dispute ournotion of a northward movement of people'

scholarly journals German Oak and Pine 14C Calibration, 7200–9439 BC

Radiocarbon ◽  
1993 ◽  
Vol 35 (1) ◽  
pp. 125-135 ◽  
Author(s):  
Bernd Kromer ◽  
Bernd Becker
Keyword(s):  
Central Europe ◽  
Tree Ring ◽  
Calibration Data ◽  
Age Range ◽  
Radiocarbon Calibration

Radiocarbon calibration data derived from German oak chronologies, ranging back to 7200 BC, have been published in the previous Calibration Issue (Stuiver & Kra 1986). In recent years, the German oak chronology has been extended to 7938 BC (Becker, this issue). For earlier intervals, tree-ring chronologies must be based on pine, because oak re-emigrated to central Europe at the Preboreal/Boreal transition, at about 8000 BC. We have established a 1784-yr pine chronology centered in the Preboreal, and have linked it tentatively to the absolutely dated oak master. We present here calibration data based on this link, for the age range, 7145–9439 BC.

A New Annual 14C Dataset for Calibrating the Thera Eruption

Radiocarbon ◽  
2020 ◽  
Vol 62 (4) ◽  
pp. 953-961 ◽  
Author(s):  
Ronny Friedrich ◽  
Bernd Kromer ◽  
Lukas Wacker ◽  
Jesper Olsen ◽  
Sabine Remmele ◽  
...  
Keyword(s):  
Quality Control ◽  
Tree Ring ◽  
Tree Rings ◽  
Annual Data ◽  
Calibration Data ◽  
Tree Ring Chronology ◽  
Time Period ◽  
Oak Tree ◽  
Thera Eruption

ABSTRACTAnnually resolved tree-ring samples of the time period 1625–1510 BCE were analyzed from the German oak tree-ring chronology. Blocks of the same tree rings were previously used to generate IntCal calibration data. The new dataset shows an offset to the calibration data IntCal13 of 24 years and resembles annual data for the same time period derived from tree-ring records in other growth locations. A subset of samples of the period 1625–1585 BCE was additionally measured in three other laboratories (ETH, AAR, AA) for quality control.

scholarly journals A Bayesian Approach to the Estimation of Radiocarbon Calibration Curves: The IntCal09 Methodology

Radiocarbon ◽  
2009 ◽  
Vol 51 (4) ◽  
pp. 1151-1164 ◽  
Author(s):  
T J Heaton ◽  
P G Blackwell ◽  
C E Buck
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Sampling ◽  
Calibration Data ◽  
New Approach ◽  
Curve Estimation ◽  
Calendar Date ◽  
The Past ◽  
Calibration Curves ◽  
Varve Counting ◽  
Radiocarbon Calibration

This article presents a new approach to the construction of radiocarbon calibration curves. The Bayesian methodology was developed specifically to facilitate construction of the 2009 updates to the internationally agreed 14C calibration curves known as IntCal09 and Marine09. The curve estimation approach taken uses Markov chain Monte Carlo sampling, specifically a Metropolis-within-Gibbs sampler, which offers improved flexibility and reliability over the approaches used in the past. In particular, the method allows accurate modeling of calibration data with 14C determinations that arise from material deposited over several consecutive calendar years and that exhibit complex uncertainty structures on their calendar date estimates (arising from methods such as wiggle-matching and varve counting).

On the need for further isotopic measurements from tree rings

1990 ◽  
Vol 330 (1615) ◽  
pp. 441-443 ◽  
Keyword(s):  
Tree Ring ◽  
Time Resolution ◽  
Scientific Community ◽  
Ice Core ◽  
Climatic Data ◽  
Calibration Curves ◽  
Volcanic Events ◽  
Proxy Measure ◽  
Isotopic Measurements ◽  
Radiocarbon Calibration

Archaeological pressure for better chronology has provided the scientific community with long tree-ring chronologies and high-precision radiocarbon calibration curves. Physicists are now using the calibration curves as the only available proxy measure of past solar variation. The underlying tree-ring chronologies can, in theory, offer three lines of research potential: (1) the analysis of other isotopes on a scale of years, (2) the possibility of climatic data on a time resolution compatible with the calibration and (3) possible refinement of the ice-core timescales, by linking related (volcanic) events in both records.

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

Radiocarbon ◽  
2016 ◽  
Vol 59 (3) ◽  
pp. 985-1007 ◽  
Author(s):  
A Bayliss ◽  
P Marshall ◽  
C Tyers ◽  
C Bronk Ramsey ◽  
G Cook ◽  
...  
Keyword(s):  
Tree Ring ◽  
Historic Buildings ◽  
Calibration Data ◽  
Medieval Period ◽  
Growth Rings ◽  
Comparable Level ◽  
Annual Growth Rings ◽  
Short Tree ◽  
Oak Tree ◽  
Calendar Dates

AbstractThis study tested whether accurate dating by accelerator mass spectrometry (AMS) radiocarbon wiggle-matching of short tree-ring series (~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 14C wiggle-matching to provide a comparable level of precision and reliability, particularly on shorter tree-ring sequences (~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 (about AD 1180–1540) when currently we have only decadal and bidecadal calibration data.

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