Dating the "Undateable" - Quantitative Environmental Reconstruction and Precision Chronology Using Tree-ring Stable Isotopes

测定“不可测年”的年代——使用树木年轮稳定同位素进行定量环境重建和精确年代学

基本信息

批准号：
EP/X025098/1
负责人：
Neil Loader
金额：
$ 344.88万
依托单位：
Swansea University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FX025098%2F1
关键词：
Dating Undateable Quantitative Environmental Reconstruction

项目摘要

Dendrochronology, or tree-ring dating, is the most precise dating method in science-based archaeology. It allows the growth of an individual tree ring to be assigned to a single calendar year and, where wood samples retain the bark-edge, it is possible to determine the season and the year in which the tree died, or was felled. The method can provide absolute calendar dates and has revolutionised the dating of wooden structures and artefacts across Europe. Where the trees grew under strong environmental stress, typically at high altitude or latitude, it is also possible to extract information on the climate of the past.However, dendrochronology and dendroclimatology are constrained by the length and variability of the tree-ring sequence being dated, as well as by the tree species, age and provenance. This means that a large proportion of samples, particularly those from regions such as NW Europe where climate rarely limits growth, cannot be dated or used for historical climate reconstruction.Using stable isotopes rather than ring widths, for both dating and palaeoenvironmental reconstruction, the QUERCUS project will develop the first annually-resolved isotopic chronologies for NW Europe extending c. 4,500 years to the Bronze Age. QUERCUS will advance the technique for species and regions where chronology and palaeoclimate data are most needed, to permit short sequence, inter-genus and multi-method dating of archives and artefacts that have remained undateable since the development of scientific dendrochronology.The stable isotope chronologies carry strong climate signals, and can be used to reconstruct the climate of the past even when the trees were not growing under environmental stress. Using a multi-disciplinary approach, these records, calibrated using some of the longest instrumental series in the world, will deliver unrivalled quantified reconstructions of summer climate for culturally-rich, populous regions where climatic change has impacted upon society over millennia.

树突年代学或树环约会是基于科学的考古学中最精确的约会方法。它允许将单个树环的生长分配到一个日历年，而木材样品保留了树皮边缘，可以确定树木死亡的季节和一年死亡或被砍伐。该方法可以提供绝对的日历日期，并彻底改变了整个欧洲木制结构和人工制品的约会。如果树木在较大的环境压力下生长，通常在高海拔或纬度上，也可以提取有关过去气候的信息。但是，树突年代表学和树突状气候学受到树木环序列的长度和变化的约束，以及树种，年龄，年龄，年龄，年龄，年龄和出生。 This means that a large proportion of samples, particularly those from regions such as NW Europe where climate rarely limits growth, cannot be dated or used for historical climate reconstruction.Using stable isotopes rather than ring widths, for both dating and palaeoenvironmental reconstruction, the QUERCUS project will develop the first annually-resolved isotopic chronologies for NW Europe extending c.青铜时代4,500年。 Quercus将推进最需要年代和古气候数据的物种和区域的技术，以允许档案和档案的多方法和多方法约会，这些档案和人工制品的日期一直是不可能的，自从稳定的同位素学的稳定的同位素构成的稳定的同位素会带来了构成的稳定的同位素，甚至可以构成climative the of note note note note note note note note note note。使用多学科的方法，这些记录使用世界上一些最长的工具系列进行了校准，将为夏季气候的量化量化无与伦比，以供夏季气候的量化重建，用于文化丰富的人口富裕的地区，气候变化影响了数千年的社会。