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14C Dating of mortar from ruins of an early medieval church hohenrätien GR, Switzerland
Geochronometria ( IF 1.2 ) Pub Date : 2020-12-31 , DOI: 10.2478/geochr-2020-0027
Irka Hajdas 1 , Mantana Maurer 1 , Maria Belen Röttig 1
Affiliation  

Abstract Numerous ruins around the world lack the radiometric dating due to the scarcity of organic carbon. Here, we present results of radiocarbon dating of mortar samples from an early Medieval church Hohenrätien GR, Switzerland, which was dated to the early 6th century, based on typology. The method of dating mortars, which is currently applied at the ETH laboratory, involves sieving the crushed mortar, selection of grain size 45−63 μm and sequential dissolution resulting in four fractions of CO2 collected in a 3-second interval each. Two mortar samples, which were analyzed using sequential dissolution and one by dating a bulk of lime lump, resulted in a combined radiocarbon age of 1551±21 BP translating to the calendar age of 427−559 AD.

中文翻译:

来自瑞士 hohenrätien GR 中世纪早期教堂遗址的 14C 砂浆年代

摘要 由于有机碳的稀缺,世界各地的许多遗址都缺乏放射性测年。在这里,我们根据类型学展示了来自瑞士 Hohenrätien GR 中世纪早期教堂的砂浆样品的放射性碳测年结果,该教堂可追溯到 6 世纪早期。目前在 ETH 实验室应用的砂浆测年方法包括筛分粉碎的砂浆,选择 45-63 μm 的粒度和顺序溶解,从而以 3 秒的间隔收集四部分 CO2。两个砂浆样品,使用顺序溶解进行分析,一个通过对大量石灰块进行测年,得出综合放射性碳年龄为 1551±21 BP,转化为公元 427-559 年的日历年龄。
更新日期:2020-12-31
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