TL-dating of vitrified material
TL-dating of vitrified material
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陶瓷材料的 TL 测年
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
A. Manzano
中科院分区：
文献类型：
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作者：
P. Kresten;C. Goedicke;A. Manzano
在试图用热释光（TL）方法测定中欧和西欧各种丘陵的玻璃化城墙材料的年代时，出现了明显的错误结果。为了寻找可能的原因，开始了对TL测年温度上限的调查。众所周知，加热不足会导致太老的错误TL年龄。不太为人所知，但尚未探索的是玻璃化开始的温度区域。从乌普萨拉附近的一座山堡，沿着沿着一条沟渠穿过玻璃化的城墙采集了样本。通过岩相学方法确定每个样品的烧制温度在±50°C内，并进行TL测量。结果表明，对于加热到900°C以上的样品，随着烧成温度的升高，测定的年龄逐渐变年轻。表观年龄越小，样品的玻璃含量越高。虽然我们的大部分数据来自玻璃化的城墙--对大多数考古学家来说有点异国情调--但我们的发现适用于所有强烈加热的材料。例如，考古遗迹（炉渣、熔炉、炉床）、回火陶瓷（石器、瓷器）或熔砖。该文件还提出了明确错误的TLdates为这些材料，沿着的现象的解释。
While attempting to date material from the vitrified ramparts of various hill-forts in central and western Europe by thermoluminescence (TL) methods, obviously erroneous results appeared. Searching for possible reasons, an investigation into the upper temperature limit of TL-dating was started. It is well known that insufficient heating causes far too old erroneous TL-ages. Less well known and yet unexplored is the temperature region where vitrification commences. From a hill-fort near Uppsala, samples were taken along a trench through the vitrified rampart. Firing temperatures were determined for each sample by petrographic methods within ±50°C, and TL-measurements were carried out. The results show that the ages determined become successively younger with increasing firing temperatures, for samples heated to temperatures exceeding 900°C. The younger the apparent age, the higher the glass content of the sample. Although most of our data are from vitrified ramparts – somewhat exotic to the majority of archaeologists – our findings apply to all strongly heated materials. Examples are archaeometallurgic remains (slags, furnaces, hearths), tempered ceramics (stoneware, porcelain), or molten bricks. The paper also presents clearly erroneous TLdates for several of these materials, along with an explanation of the phenomenon.