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the claim
Archaeologists use calibration curves derived from tree rings and other data to correct radiocarbon dates.
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
4 sources for · 0 against

Archaeologists and geoscientists rely on calibration curves derived from tree rings (dendrochronology) and independent archives such as corals and laminated sediments to convert radiocarbon measurements into accurate calendar ages.

Evidence for · 4
An 11,000-Year German Oak and Pine Dendrochronology for Radiocarbon Calibration
1993 · cited by 110
Establishes that dendrodated tree-ring sequences provide ideal sources for radiocarbon calibration.
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The analysis

The retrieved papers consistently demonstrate that dendrochronology and other independent dating data are foundational for constructing and refining radiocarbon calibration curves. Multiple sources (e.g., [0], [5], [7], [11]) explicitly discuss how tree rings of known age are used to calibrate 14C timescales. No papers refute the claim.

More for · 3
Dendrochronology and Radiocarbon Dating: The Laboratory of Tree-Ring Research Connection
2009 · cited by 18
Details how tree-ring science and dated wood samples from the Laboratory of Tree-Ring Research established the calibration of the radiocarbon timescale.
DENDROCHRONOLOGY AND RADIOCARBON DATING
2021 · cited by 14
Confirms that absolutely dated tree rings have been key to the calibration of the Holocene portion of the radiocarbon timescale.
Radiocarbon Calibration Beyond the Dendrochronology Range
2000 · cited by 10
Explains how the radiocarbon timescale has been calibrated using dendrochronology alongside other data sources like marine sediments and corals.
Everything we examined (12)
We also searched for evidence AGAINST this claim, not only for it.
  1. An 11,000-Year German Oak and Pine Dendrochronology for Radiocarbon Calibrationpeer-reviewedsupports
  2. A RESPONSE TO COMMUNITY QUESTIONS ON THE MARINE20 RADIOCARBON AGE CALIBRATION CURVE: MARINE RESERVOIR AGES AND THE CALIBRATION OF <sup>14</sup>C SAMPLES FROM THE OCEANSpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Marine Radiocarbon Reservoir Effect in Southern Atlantic Iberian Coastpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. Pego do Diabo (Loures, Portugal): dating the emergence of anatomical modernity in westernmost Eurasia.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. Practical Guide to Measuring Wetland Carbon Pools and Fluxes.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. Dendrochronology and Radiocarbon Dating: The Laboratory of Tree-Ring Research Connectionpeer-reviewedsupports
  7. Reservoir Offset Models for Radiocarbon Calibrationpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. DENDROCHRONOLOGY AND RADIOCARBON DATINGpeer-reviewedsupports
  9. Radiocarbon offsets and old world chronology as relevant to Mesopotamia, Egypt, Anatolia and Thera (Santorini).peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Integrated Tree-Ring-Radiocarbon High-Resolution Timeframe to Resolve Earlier Second Millennium BCE Mesopotamian Chronology.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  11. THE NEKSELØ FISH WEIR AND MARINE RESERVOIR EFFECT IN NEOLITHIZATION PERIOD DENMARKpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. Radiocarbon Calibration Beyond the Dendrochronology Rangepeer-reviewedsupports
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → SUPPORTED · 8805 Aug 2026
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