不同协议和年龄模型在土砂浆OSL定年中的应用

IF 1.2 4区地球科学 Q3 Earth and Planetary Sciences

Geochronometria Pub Date : 2017-12-29 DOI:10.1515/geochr-2015-0072

L. Panzeri, M. Cantù, M. Martini, E. Sibilia

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引用次数: 9

摘要

摘要在本研究中，OSL测年被应用于土砂浆，该砂浆由分散在粉质粘土基质中的富含石英的骨料组成。样本取自意大利北部克雷莫纳的两个独立年代的建筑（雷蒙迪宫，公元1495–1499年和索尔迪宫，1770–1790年）。使用150–250μm石英粒级，尝试使用多颗粒和单颗粒方案评估等效剂量（De）。测试了各种统计方法在识别良好漂白样品方面的可靠性和有效性。由于大量漂白不良的颗粒，多颗粒技术的使用给出了不可靠的结果。使用单颗粒技术，获得了更有希望的结果：特别是，在大多数情况下，即使精度仍然相对较低，非对数MAM3和IEU模型也可以准确评估砂浆的预期使用寿命。

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Application of different protocols and age-models in OSL dating of earthen mortars

Abstract In this study, OSL dating was applied to earthen mortars, consisting in a quartz-rich aggregate dispersed in silty-clayey matrix. The samples were taken from two independently dated structures in Cremona, Northern Italy (Palazzo Raimondi, 1495–1499 AD and Palazzo Soldi, 1770–1790 AD). The evaluation of the equivalent dose (De) was attempted with both the multigrain and the single grain protocols using the 150–250 μm quartz fraction. The reliability and effectiveness of the various statistical methods in identifying the well-bleached samples were tested. The use of the multi-grain technique gave unreliable results, due to the high amount of poorly bleached grains. With the single-grain technique, more promising results were obtained: in particular, the un-log MAM3 and IEU models allowed an accurate evaluation of the mortar expected age in most cases, even if the precision is still relatively low.

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来源期刊

Geochronometria 地学-地球科学综合

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Geochronometria is aimed at integrating scientists developing different methods of absolute chronology and using them in different fields of earth and other natural sciences and archaeology. The methods in use are e.g. radiocarbon, stable isotopes, isotopes of natural decay series, optically stimulated luminescence, thermoluminescence, EPR/ESR, dendrochronology, varve chronology. The journal publishes papers that are devoted to developing the dating methods as well as studies concentrating on their applications in geology, palaeoclimatology, palaeobiology, palaeohydrology, geocgraphy and archaeology etc.