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Development of the Intcal Database
UploadTree-rings reveal two strong solar proton events in 7176 and 5259 BCE
Download from www.nature.comCosmogenic radionuclides reveal an extreme solar particle storm near a solar minimum 9125 years BP
Download from www.nature.comResponse to Comment on “A global environmental crisis 42,000 years ago”
UploadA global environmental crisis 42,000 years ago
UploadThe INTCAL20 NORTHERN HEMISPHERE RADIOCARBON AGE CALIBRATION CURVE (0–55 CAL kBP)
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