Luminescence chronologies of late Pleistocene settlements in the Romanian Carpathians

罗马尼亚喀尔巴阡山脉晚更新世定居点的发光年表

• 批准号: 242094834
• 负责人: Privatdozent Dr. Christoph Schmidt
• 金额: --
• 依托单位: Universitatea Babeş-Bolyai
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/242094834?language=en
• 关键词: Luminescence; chronologies; late; Pleistocene; settlements

Thermoluminescence (TL) dating of heated silex artifacts is the most direct means of determining the occupation of Paleolithic settlements in the absence of carbon-bearing material and beyond the range of the radiocarbon method. Especially with regard to late Pleistocene (Late Upper Paleolithic and Mesolithic) sites, however, the uncertainty levels of TL dates are often larger than needed for reasonable resolution of the archeological record. The project thus aims to contribute to enhancing both accuracy and precision of the TL method. Therefore, two approaches will be followed: 1) Improving methods of sample purification (magnetic separation and luminescence-based detection of radiation 'hot spots' within the sample) and 2) generating multiple ages per specimen by means of several TL (and OSL) emissions ('multi-emission' dating). The latter approach is expected to increase the reliability and precision of the artifact's age. After verification of these methods on geological silex material, they will be applied to heated artifacts from mainly Mesolithic sites in the Romanian Carpathians for which alternative dating techniques failed so far. An additional backup of TL ages will be provided by OSL dating of adjacent sediments. The expected Mesolithic ages will reduce measurement time and allow processing of a reasonable number of samples during project run time to establish chronologies for these sites. To evaluate the developed methods, their results will be compared to 'conventional' dates.

加热硅片人工制品的热释光(TL)测年是在没有含碳材料和超出放射性碳法范围的情况下确定旧石器时代聚落所占位置的最直接手段。然而，特别是对于晚更新世(旧石器时代晚期和中石器时代晚期)遗址，热释光年代的不确定程度往往大于考古记录合理解析所需的水平。因此，该项目旨在促进提高热释光方法的准确度和精密度。因此，将遵循两种方法：1)改进样品纯化方法(基于磁分离和发光检测样品中的辐射‘热点’)和2)通过几个TL(和OSL)发射的方法对每个样品产生多个年龄(‘多发射’测年)。后一种方法有望提高文物年代的可靠性和精确度。在对地质硅质岩材料验证了这些方法后，它们将应用于加热的文物，这些文物主要来自罗马尼亚喀尔巴底山脉的中石器时代遗址，而其他测年技术迄今无法对这些文物进行测年。通过对邻近沉积物的OSL测年，将提供TL年龄的额外支持。预计的中石器时代将减少测量时间，并允许在项目运行期间处理合理数量的样品，以建立这些遗址的年代学。为了评估开发的方法，他们的结果将与传统的数据进行比较。