scholarly journals The Comparison of 14C Wiggle-Matching Results for the ‘Floating’ Tree-Ring Chronology of the Ulandryk-4 Burial Ground (Altai Mountains, Siberia)

Radiocarbon ◽  
2004 ◽  
Vol 46 (2) ◽  
pp. 943-948 ◽  
Author(s):  
Yaroslav V Kuzmin ◽  
Igor Y Slusarenko ◽  
Irka Hajdas ◽  
Georges Bonani ◽  
J Andres Christen
Keyword(s):  
Tree Ring ◽  
Data Sets ◽  
Burial Ground ◽  
Altai Mountains ◽  
Tree Ring Chronology ◽  
Cultural Complex ◽  
The Absolute ◽  
Good Agreement

Two independent 14C data sets of 10 tree-ring samples from the longest master chronology of the Pazyryk cultural complex were obtained and wiggle-matched to the absolute timescale. The results show very good agreement, within 10–15 calendar yr. The Ulandryk-4 burial ground (mound 1) was dated to about 320–310 cal BC, and this is consistent with wiggle-matching of the Pazyryk burial ground date series.

Revised ‘absolute’ dating of the early Mesolithic site of Star Carr, North Yorkshire, in the light of changes in the early Holocene tree-ring chronology

Antiquity ◽  
2000 ◽  
Vol 74 (284) ◽  
pp. 304-307 ◽  
Author(s):  
Petra Dark
Keyword(s):  
Environmental Change ◽  
Tree Ring ◽  
Calibration Curve ◽  
Early Holocene ◽  
Tree Ring Chronology ◽  
Absolute Dating ◽  
The Absolute ◽  
Holocene Environmental Change ◽  
Radiocarbon Calibration

Recent revision of the radiocarbon calibration curve for the early Holocene has implications for the ‘absolute’ date of Mesolithic sites such as Star Carr, and for their relationship to the timescale of early Holocene environmental change.

scholarly journals Fossile Föhren – präzises Werkzeug der Paläoklimaforschung: Stand der Jahrringforschung an fossilen Bäumen und Vernetzung hochauflösender Archive | Fossil pine trees – accurate tool in paleoclimatic research

2004 ◽  
Vol 155 (6) ◽  
pp. 233-237
Author(s):  
Klaus Felix Kaiser ◽  
Matthias Schaub
Keyword(s):  
High Resolution ◽  
Tree Ring ◽  
Tree Rings ◽  
Younger Dryas ◽  
Ice Cores ◽  
Tree Ring Chronology ◽  
Pine Trees ◽  
The Absolute

A comparison of different high-resolution archives, such as tree rings, ice cores and marine varves show high degrees of similarity and reveal significant hemispheric climatic events (Older Dryas, Gerzensee Deviation, onset of Younger Dryas). Even the eruption of the Laachersee volcano (Eifel, Germany) 13 070 years ago is recorded synchronously in all of these archives. Trees from the Zurich area extend the absolute tree-ring chronology back to 12 449 years BP. This extension is relevant for quaternary research as well as for calibrating the 14C curve and other archives. The recent findings from the Uetliberg may provide further progress in filling the existing gaps in the Lateglacial tree-ring chronologies.

scholarly journals The Long-Term Radiocarbon Trend of the Absolute German Oak Tree-Ring Chronology, 2800 to 800 BC

Radiocarbon ◽  
1983 ◽  
Vol 25 (2) ◽  
pp. 197-203 ◽  
Author(s):  
Bernd Becker
Keyword(s):  
Central Europe ◽  
Tree Ring ◽  
Tree Ring Chronology ◽  
The Holocene ◽  
Oak Tree ◽  
The Absolute ◽  
Nearly Continuous ◽  
Continuous Source

The Hohenheim Tree-Ring Laboratory has extended the Holocene oak tree-ring chronology back to prehistoric times by analyses of subfossil tree trunks from gravel deposits along the rivers of central Europe. Hundreds of subfossil oaks can be collected each year because of widespread gravel quarrying. Despite this nearly continuous source of samples (at present, 2200 trees are analyzed), even within these deposits some limitations do exist in linking together a Holocene tree-ring sequence.

Radiocarbon Measurements of Paper: A Forensic Case Study to Determine the Absolute Age of Paper in Documents and Works of Art

Radiocarbon ◽  
2017 ◽  
Vol 59 (5) ◽  
pp. 1553-1560 ◽  
Author(s):  
C Matthias Huels ◽  
Sabine Pensold ◽  
Enrico Pigorsch
Keyword(s):  
Tree Ring ◽  
Forensic Investigation ◽  
Paper Production ◽  
Works Of Art ◽  
Forensic Case ◽  
The Absolute ◽  
Absolute Age ◽  
Ring Fibers ◽  
Good Agreement

ABSTRACTIn a case study to assess the possibilities and limitations of determining the exact age of paper, we measured radiocarbon (14C) concentrations in bulk-paper cellulose and starch extracts from 20 known-age paper samples of the last 65 yr. As expected, 14C concentrations in single-seasonal grown starch extracts are in reasonably good agreement with post-bomb atmospheric 14C. In contrast, 14C concentrations in bulk-paper cellulose indicate apparent admixtures of tree-ring fibers spanning up to >50 yr. In a forensic investigation, combining 14C results from single-seasonal components like starch with those from long-lived fibers, could potentially enhance the precision of paper production-date estimates for samples made after 1955.

scholarly journals 14C Wiggle Matching of the ‘Floating’ Tree-Ring Chronology from the Altai Mountains, Southern Siberia: the Ulandryk-4 Case Study

Radiocarbon ◽  
2001 ◽  
Vol 43 (2A) ◽  
pp. 425-431 ◽  
Author(s):  
I Y Slusarenko ◽  
J A Christen ◽  
L A Orlova ◽  
Y V Kuzmin ◽  
G S Burr
Keyword(s):  
Tree Ring ◽  
Altai Mountains ◽  
Tree Ring Chronology ◽  
Radiocarbon Dates ◽  
Southern Siberia ◽  
Pazyryk Culture ◽  
Type Complex ◽  
Mountain System ◽  
Burial Mounds

The Bayesian approach to calibration of radiocarbon dates was used to wiggle-match the “floating” tree-ring chronology from a Pazyryk culture (Scythian-type complex from Sayan-Altai Mountain system, southern Siberia) burial ground in order to estimate the calendar age of its construction. Seventeen bidecadal tree-ring samples were 14C dated with high precision (±20–30 yr). The results of wiggle-matching show that the Pazyryk-type burial mounds in the southern Altai Mountains were created in the first part of 3rd century BC.

scholarly journals Medium-Term Atmospheric 14C Variations

Radiocarbon ◽  
1980 ◽  
Vol 22 (2) ◽  
pp. 267-272 ◽  
Author(s):  
A F M De Jong ◽  
W G Mook
Keyword(s):  
Model Calculation ◽  
Production Rate ◽  
Tree Ring ◽  
Tree Rings ◽  
Input Function ◽  
Medium Term ◽  
Tree Ring Chronology ◽  
Geochemical Model ◽  
Single Tree ◽  
Good Agreement

High-precision 14C measurements are presented, carried out on single tree rings from a section of the floating South German Neolithic tree-ring chronology. They confirm the existence of pronounced medium-term variations in the order of 2 percent during the 33rd to 38th centuries BC.These variations turn out to be very regular while the precision of 1.5‰ allows a comparison with a geochemical model calculation. Good agreement is acquired for an input function with a periodicity of about 150 years and an amplitude of approximately 30 percent in the 14C production rate.

Systematic calculations of energy levels and transitions rates in Mo XXVIII

2020 ◽  
Vol 75 (8) ◽  
pp. 739-747
Author(s):  
Feng Hu ◽  
Yan Sun ◽  
Maofei Mei
Keyword(s):  
Energy Levels ◽  
Oscillator Strengths ◽  
Atomic Data ◽  
Data Sets ◽  
Electron Systems ◽  
Excitation Energies ◽  
Experimental Values ◽  
Qed Effects ◽  
Hyperfine Structures ◽  
Good Agreement

AbstractComplete and consistent atomic data, including excitation energies, lifetimes, wavelengths, hyperfine structures, Landé gJ-factors and E1, E2, M1, and M2 line strengths, oscillator strengths, transitions rates are reported for the low-lying 41 levels of Mo XXVIII, belonging to the n = 3 states (1s22s22p6)3s23p3, 3s3p4, and 3s23p23d. High-accuracy calculations have been performed as benchmarks in the request for accurate treatments of relativity, electron correlation, and quantum electrodynamic (QED) effects in multi-valence-electron systems. Comparisons are made between the present two data sets, as well as with the experimental results and the experimentally compiled energy values of the National Institute for Standards and Technology wherever available. The calculated values including core-valence correction are found to be in a good agreement with other theoretical and experimental values. The present results are accurate enough for identification and deblending of emission lines involving the n = 3 levels, and are also useful for modeling and diagnosing plasmas.

scholarly journals Quality Dating: A Well-Defined Protocol Implemented at ETH for High-Precision 14C-Dates Tested on Late Glacial Wood

Radiocarbon ◽  
2019 ◽  
Vol 62 (4) ◽  
pp. 891-899 ◽  
Author(s):  
Adam Sookdeo ◽  
Bernd Kromer ◽  
Ulf Büntgen ◽  
Michael Friedrich ◽  
Ronny Friedrich ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tree Ring ◽  
High Precision ◽  
Accelerator Mass Spectrometry ◽  
Late Glacial ◽  
Tree Ring Chronology ◽  
Continuous Measurements ◽  
Calibration Curves

ABSTRACTAdvances in accelerator mass spectrometry have resulted in an unprecedented amount of new high-precision radiocarbon (14C) -dates, some of which will redefine the international 14C calibration curves (IntCal and SHCal). Often these datasets are unaccompanied by detailed quality insurances in place at the laboratory, questioning whether the 14C structure is real, a result of a laboratory variation or measurement-scatter. A handful of intercomparison studies attempt to elucidate laboratory offsets but may fail to identify measurement-scatter and are often financially constrained. Here we introduce a protocol, called Quality Dating, implemented at ETH-Zürich to ensure reproducible and accurate high-precision 14C-dates. The protocol highlights the importance of the continuous measurements and evaluation of blanks, standards, references and replicates. This protocol is tested on an absolutely dated German Late Glacial tree-ring chronology, part of which is intercompared with the Curt Engelhorn-Center for Archaeometry, Mannheim, Germany (CEZA). The combined dataset contains 170 highly resolved, highly precise 14C-dates that supplement three decadal dates spanning 280 cal. years in IntCal, and provides detailed 14C structure for this interval.

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