Developing an Absolutely-Dated Holocene Tree-Ring Chronologyfrom Sub-Fossil Huon Pine in Tasmania for Paleoclimate and Isotopic Studies

这是一个为期2年的项目，旨在开发一个 连续的、绝对定年的全新世树木年轮年表， 活的和亚化石huon松位于塔斯马尼亚西部， 澳大利亚 根据已知的采样活树年龄（1000 年）和一系列重叠的放射性碳年代测定， 恢复亚化石日志，所有从斯坦利河在西部 塔斯马尼亚，树木年轮标本在手， 大约有3000年的时间。 此外，其他子 从斯坦利河的沉积物中发现的化石原木 放射性碳年代测定法， 来自北方树木的校准曲线。 因此，已经证明有潜力在9000 - 10000年内 塔斯马尼亚的年轮年表， 气候有趣的高温热期（约。7- 9，000 BP）， 现实的前景，它最终延伸回 新仙女木冷事件（Younger Dryas cold event）10- 11，000 BP）和冰川- 间冰期过渡（ca. 13- 14，000 BP）。 我们将尽可能充分利用斯坦利 河子化石木材现在在手，样品从该更多的日志 当地，并探索塔斯马尼亚州的其他huon松树网站在一个 努力找到9,000 BP前的木材， 校准曲线 在此过程中，我们还将开发一个网络， 塔斯马尼亚1000年之久的现代树木年轮年表， 如果可能的话，新西兰将被用来重建过去 这个行业的气候。 这种木材所产生的精确日期 项目将可用于其他科学研究，包括 稳定同位素和碳-14分析，以实现这一目标 尽可能科学地生产。

This is a 2 year project aimed towards developing a continuous, absolutely dated Holocene tree-ring chronology from live and sub-fossil huon pine located in western Tasmania, Australia. Based on the known ages of sampled living trees (1000 years old) and a series of overlapping radiocarbon dates from recovered sub-fossil logs, all from the Stanley River in western Tasmania, tree-ring specimens are in hand for developing a chronology almost 3000 years in length. In addition, other sub- fossil logs recovered from deposits at the Stanley River have radiocarbon dates that extend back beyond the present radiocarbon calibration curve derived from Northern Hemisphere trees. Consequently, there is the proven potential for a 9-10,000 year tree-ring chronology from Tasmania that would include the climatically interesting Hypsithermal warm period (ca. 7-9,000 BP), with the realistic prospect of it eventually extending back to the Younger Dryas cold event (ca. 10-11,000 BP) and the glacial- interglacial transition (ca. 13-14,000 BP). We will exploit to the fullest extent possible the Stanley River sub-fossil wood now in hand, sample additional logs from that locality, and explore Tasmania for other huon pine sites in an effort to locate pre-9,000 BP wood for extending the radiocarbon calibration curve. In the process, we will also develop a network of 1000 year long modern tree-ring chronologies for Tasmania and, if possible, New Zealand that will be used to reconstruct past climate in that sector. The precisely dated wood produced by this project will be available for other scientific studies, including stable isotope and carbon-14 analyses, in order to make this project as scientifically productive as possible.