Non-destructive in-situ classification of sandstones used in the Angkor monuments of Cambodia using a portable X-ray fluorescence analyzer and magnetic susceptibility meter
Non-destructive in-situ classification of sandstones used in the Angkor monuments of Cambodia using a portable X-ray fluorescence analyzer and magnetic susceptibility meter
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DOI：
10.1016/j.jasrep.2021.103137
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发表时间：
2021-08-04
影响因子：
1.6
通讯作者：
Takeyama, Toru
中科院分区：
文献类型：
--
作者：
Uchida, Etsuo;Watanabe, Ryota;Takeyama, Toru
吴哥古迹建于9世纪至15世纪之间，使用灰色至黄褐色砂岩，红色砂岩和灰砂岩，岩石学上分别分为长石砂质，石英砂质和长石到岩屑砂质。灰色到黄褐色的砂岩普遍用于所有吴哥纪念碑寺庙。红砂岩被用作Banteay Srei寺庙的主要建筑材料，但在巴戎晚期和之后建造的寺庙中，偶尔也会混入灰色到黄褐色的砂岩。灰瓦克是塔乔寺顶部五个圣殿的主要建筑材料，也用于雕像和林加yoni基座。为了使用无损和原位方法区分这些砂岩，使用便携式磁化率计和便携式x射线荧光分析仪进行了测量。利用获得的Rb、Sr、Y含量和磁化率值对上述三种岩石类型进行了有效分类。结果表明，大觉寺所用灰蜡、造像所用灰蜡和陵加yoni座所用灰蜡的磁化率、Rb和Y含量存在差异，说明灰蜡的来源位置不同。
The Angkor monuments were built between the 9th and 15th centuries using gray to yellowish brown sandstone, red sandstone, and greywacke, which are petrologically classified as feldspathic arenite, quartz arenite, and feldspathic to lithic wacke, respectively. Gray to yellowish brown sandstone was generally used in all of the Angkor monument temples. Red sandstone was used as the main building material in the Banteay Srei temple but was also occasionally mixed with gray to yellowish brown sandstone in temples built in and after the late Bayon period. Greywacke was the main building material in the five sanctuaries atop the Ta Keo temple and was also used for statues and Linga-Yoni pedestals. To distinguish these sandstones using a non-destructive and in-situ approach, measurements were performed using a portable magnetic susceptibility meter and portable X-ray fluorescence analyzer. The obtained Rb, Sr, and Y contents and magnetic susceptibility values were used to effectively classify the above three rock types. The results show differences in the magnetic susceptibility, Rb and Y contents between the greywacke used in the Ta Keo temple, that used in statues, and that used in Linga-Yoni pedestals, which demonstrates different source locations.