Prospects for the Extension of the Bristlecone Pine Chronology: Radiocarbon Analysis of H-84-1

Mathematics – Logic

Scientific paper

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Isotopic Studies

Scientific paper

The bristlecone pine tree-ring chronology for Methuselah Walk in the White Mountains of east-central California extends to 6700 B.C. Three remnants, dated only by radiocarbon, exist beyond the present limit. The three have 500, 600, and 500 rings and raise the total number of rings to about 10,280. Correspondingly, the three gaps total perhaps 1300 to 1400 years. Two of the "floaters," each with 500 rings, are too small for decade samples to be prepared for conventional radiocarbon analysis. The third, about midway between the other two, has 600 rings and decade samples have been prepared. Three 14C dates, in the range of 9000 B.P. are reported. The constancy of the ever-lengthening time range covered by the dendrochronologically dated remnants, combined with the presence of even earlier wood, indicate a strong possibility for the extension of the year-to-year tree-ring chronology and for its use in the calibration program.

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