Precise Calendrical Dating of Known Growth-Period Samples Using a ‘Curve Fitting’ Technique
Precise Calendrical Dating of Known Growth-Period Samples Using a ‘Curve Fitting’ Technique
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使用“曲线拟合”技术对已知生长期样本进行精确的历法测定
DOI：
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发表时间：
1986
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影响因子：
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通讯作者：
G W Pearson
中科院分区：
文献类型：
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作者：
G W Pearson
绝对高精度的放射性碳时标校准现已可用，Stuiver和Pearson（1986年）以及Pearson和Stuiver（1986年）表明其在国际上有效。本文提出的曲线拟合技术表明，某些样品的年代可以在一个非常窄的带宽约± 20年，在时间段时，单样本分析将给出模糊的年代转换。覆盖时间跨度>50年的已知沉积速率的样品被细分以产生“浮动曲线”，然后该曲线与高精度校准“摆动匹配”以给出精确的岩石年龄。
Absolute high-precision radiocarbon time-scale calibration is now available and is shown by Stuiver and Pearson (1986) and Pearson and Stuiver (1986) to be internationally valid. The technique of curve fitting presented in this paper shows how certain samples may be dated calendrically to within a very narrow band width ca ± 20 years, at time periods when single sample analysis would give ambiguous calendrical conversion. Samples of known deposition rate covering a time span of >50 years are subdivided to produce a ‘floating curve’ and this curve is then ‘wiggle matched’ with the high-precision calibration to give a precise calendrical age.