Core Support for Archaeometric Service of a Radiocarbon Dating Facility

放射性碳测年设施考古服务的核心支持

• 批准号: 9111714
• 负责人: Herbert Haas
• 金额: $ 26.36万
• 依托单位: Southern Methodist University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-15 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9111714&HistoricalAwards=false
• 关键词: Core; Support; Archaeometric; Service; Radiocarbon

With three years of National Science Foundation support, Dr. Herbert Haas will continue the operation of the Southern Methodist University radiocarbon laboratory and increase its ability to date archaeologically significant samples. Through his widespread contacts with the anthropological community, Dr. Haas collaborates with archaeologists working in many parts of the world and provides absolute ages for organic samples which they submit. Currently, the laboratory supports projects involving over 89 archaeologists working in more than 31 states and countries. With NSF support, this collaboration will continue. Secondly, Dr. Haas will work to refine the radiocarbon dating technique itself and will concentrate in two areas. He will develop better procedures for dating the humic acids in soils. To achieve this, he will date samples from secure stratigraphic contexts where independent means for age evaluation are available. He will also analyze multiple samples from a single soil horizons which extend over large geographical areas. Secondly, Dr. Haas will focus on dates which lie near the limits of the radiocarbon technique. While in theory determinations up to 55,000 years old are possible, most laboratories are equipped to work accurately over only a ca. 35-40,000 time span. Dr. Haas will concentrate on the 35-55,000 interval. He will develop techniques for sample evaluation and for elimination of sources of potential contamination which may be introduced during the dating process. The goal of anthropological archaeology is to trace the process of cultural development over time. To accomplish this, it is essential that materials and excavated sites be chronologically accurately placed. The radiocarbon technique provides an important way to accomplish this and it is crucial to the discipline that laboratories sympathetic to these goal be supported. The SMU laboratory is well known both for the carefulness of its work and its willingness to analyze difficult samples. With NSF support, this important resource will be maintained. The research conducted will not only provide dates for archaeological use but also refine the dating technique itself.

在国家科学基金会三年的支持下，赫伯特·哈斯博士将继续运营南卫理公会大学放射性碳实验室，并提高其对具有考古意义的样本进行年代测定的能力。 通过与人类学界的广泛接触，哈斯博士与世界各地的考古学家合作，为他们提交的有机样本提供绝对年龄。 目前，该实验室支持的项目涉及超过 89 名考古学家，他们在超过 31 个州和国家工作。 在 NSF 的支持下，这种合作将继续下去。 其次，哈斯博士将致力于完善放射性碳测年技术本身，并将集中在两个领域。 他将开发更好的程序来测定土壤中腐殖酸的年代。 为了实现这一目标，他将从安全的地层环境中提取样本，在这些环境中可以使用独立的年龄评估方法。 他还将分析来自覆盖大片地理区域的单一土壤层的多个样本。 其次，哈斯博士将重点关注接近放射性碳技术极限的日期。 虽然理论上可以测定长达 55,000 年前的数据，但大多数实验室的设备只能在大约 15,000 年前进行准确工作。 35-40,000 时间跨度。 Haas 博士将专注于 35-55,000 区间。 他将开发用于样品评估和消除在约会过程中可能引入的潜在污染源的技术。 人类考古学的目标是追踪文化随时间发展的过程。 为了实现这一目标，材料和挖掘地点必须按时间顺序准确放置。 放射性碳技术提供了实现这一目标的重要方法，并且支持支持这些目标的实验室对于该学科至关重要。 SMU 实验室因其工作的细心和分析困难样品的意愿而闻名。在 NSF 的支持下，这一重要资源将得到维护。 所进行的研究不仅将为考古用途提供日期，还将完善测年技术本身。