アンコール遺跡（カンボジア）のラテライト —— ラテライトに基づく遺跡のグループ化 ——
アンコール遺跡（カンボジア）のラテライト —— ラテライトに基づく遺跡のグループ化 ——
复制标题
吴哥遗址红土（柬埔寨）——以红土为基础的遗址分组——
DOI：
10.2465/ganko.94.162
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
武 中川
中科院分区：
文献类型：
--
作者：
悦生 内田;則行 前田;武 中川
测量了柬埔寨吴哥古迹中使用的红土的磁化率、孔径、层理面方向和化学成分。 25 个主要古迹的砌块红土根据质地可分为多孔红土和豆粒红土。两类红土的主要成分矿物相同，即针铁矿、赤铁矿、高岭石和石英。这些红土应该是由砂岩和砾岩风化形成的。 根据这些红土的平均孔径和磁化率，除了 Phnom Krom 和 Banteay Srei 两座纪念碑外，调查的纪念碑可分为 5 组（A 至 E 组）。红土中的 As、Sb、Sr 和 V 含量也支持这种分组。 A、C 和 E 组的红土富含 As、Sb 和 Sr，但与 B 和 D 组相比，V 含量较差。这些事实表明，开采红土的采石场随时间而变化。 对红土块层理面的调查发现，吴哥窟之前建造的古迹中，具有垂直层理面的红土块所占比例较高（约30%～75%），而吴哥窟及其后建造的古迹中，红土块所占比例较低（不足14%）。 从与 Prasat Suor Prat 和 Khleangs 相邻的两个池塘的堤坝所用红土的岩石学相似性来看，可以得出结论，这些池塘的建造时间与 Khleangs 相同。
The magnetic susceptibility, pore size, orientation of the bedding plane and chemical compositions of the laterites used in the Angkor momunents, Cambodia, were measured. The laterites used as building blocks of the 25 main monuments can be classified into porous laterites and pisolitic laterites based on the texture. Main constituent minerals of the both type laterites are the same, that is, goethite, hematite, kaolinite and quartz. These laterites are supposed to be formed by weathering of sandstone and conglomerate. Based on the average pore size and magnetic susceptibility of these laterites, the investigated monuments can be classified into 5 groups (Groups A to E) except for two monuments of Phnom Krom and Banteay Srei. This grouping is also supported by As, Sb, Sr and V contents of laterites. The laterites of the Groups A, C and E are rich in As, Sb and Sr, but poor in V compared with those of the Groups B and D. These facts suggest that the quarries from which the laterites were mined changed with the time. The investigation of the bedding plane of the laterite blocks revealed that the percentage of the laterite blocks with the vertical bedding plane is high (about 30 to 75%) in the monuments constructed prior to Angkor Wat, but low (less than 14%) in Angkor Wat and subsequently constructed monuments. Judging from the petrographic similarities of the laterites used for the embankments of the two ponds ajacent to Prasat Suor Prat and Khleangs, it is concluded that the ponds were constructed in the same age as Khleangs.