First cross-matched floating chronology from the marine fossil record: data from growth lines of the long-lived bivalve mollusc Arctica islandica
First cross-matched floating chronology from the marine fossil record: data from growth lines of the long-lived bivalve mollusc Arctica islandica
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海洋化石记录中第一个交叉匹配的漂浮年表：来自长寿双壳类软体动物 Arctica islandica 生长线的数据
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
P. Jones
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文献类型：
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作者：
J. Scourse;C. Richardson;G. Forsythe;I. Harris;J. Heinemeier;N. Fraser;K. Briffa;P. Jones
由于目前海洋环境没有绝对的时间尺度，因此无法全面了解末次冰期周期内气候系统内的阶段变化以及更高频率的变化。这排除了识别的强迫和反馈，准确的时间校准海洋放射性碳水库的影响，和应用放射性碳作为短期尺度的海洋通风的代理。这促使人们寻找每年带状的海洋代用品，希望建立一个准确的海洋计时器。我们提出了每年的增长带系列从死收集的标本的长寿双壳类软体动物北极islandica从北海北方，并证明他们成功的交叉匹配，一般的时间尺度的背景下独立验证的放射性碳测年。虽然目前仅限于几个统计交叉匹配的系列，这已经产生了最长的北极年代，第一个“浮动”年代完全由海洋化石构建。记录涵盖了从C。公元1000年至1400年，并整合了一个267年的系列，从最长寿的北极标本尚未记录从北海。交叉匹配的这一突破表明，Arctica islandica可以实现其作为“海洋之树”的潜力，为海洋环境提供绝对的时间尺度。
Integrated understanding of phasings within the climate system over the last glacial cycle, and at higher frequencies, is inhibited because no absolute timescale for the marine environment currently exists. This precludes identification of forcings and feedbacks, accurate temporal calibration of the marine radiocarbon reservoir effect, and the application of radiocarbon as a proxy of short-timescale ocean ventilation. This has prompted a search for annually banded marine proxies in the hope of establishing an accurate marine chronometer. We present annual growth band series from dead-collected specimens of the long-lived bivalve mollusc Arctica islandica from the northern North Sea and demonstrate their successful cross-matching, with the general timescale context independently verified by radiocarbon dating. Though at present limited to only a few statistically cross-matched series, this has already generated the longest Arctica chronology, and the first ‘floating’ chronology constructed entirely from marine fossils. The record covers the period from c. AD 1000 to 1400 and integrates a 267-yr series from the longest-lived Arctica specimen yet recorded from the North Sea. This breakthrough in cross-matching demonstrates that Arctica islandica can fulfill its potential as the ‘tree of the sea’ to provide an absolute timescale for the marine environment.