ELECTROMAGNETIC STUDY AND 14C DATING STUDY ON ARCHAEOLOGICAL RUINS AND OBJECTS OF MEDIEVAL PERIOD

对中古时期的器物进行了磁性、14C定年、地球物理勘探等方面的研究。(1)对北陆和北海道地区的考古遗址进行了考古磁测年。由于测年用的标准地磁长期变差是在日本西南部的资料中得到的，因此有必要考察该标准变差（SGV-NWJAPAN）是否适用于目标区域。对北海道几个遗址的考古磁资料研究表明，改良的SGV-NWJAPAN在测年方面是有用的。此外，在与北海道纬度几乎相同的俄罗斯符拉迪沃斯托克的几个遗址进行的研究表明，北海道的考古地磁对测年是有用的。在石川县北都镇的苏陶窑中，测定的古地磁年龄在13 ~ 14世纪之间，误差较小。这些年龄与考古学估计的年龄一致，也与从木炭中研究的14C年龄一致。在调查区进行了探地雷达测量。调查数据明确了地下未知窑的存在，并得到了挖掘的证实。这些结果有助于这些地区申请国家指定考古遗址。(2)通过14c测年研究，得到了以下显著结果：(1)北海道萨摩末年代确定为公元936年左右(2)阿富汗巴米扬遗址的壁画覆盖了5、6世纪至9世纪中期(3)对镰仓战争破坏的骨骼进行了14C年代的研究（特别是镰仓末年代左右）。此外，还获得了关于古代铁材料和火化骨骼的14C年龄的有价值的结果。

We conducted the studies on the objects at medieval period, by the magnetic properties of remains, the 14C dating, and the geophysical prospecting.(1) Archaeomagnetic dating was applied at the archaeological sites of Hokuriku and Hokkaido regions. As the standard geomagnetic secular variation for the dating is made from the data at the southwest Japan, it is necessary to examine whether this standard variation (SGV-NWJAPAN) is applicable to the object area.The archaeomagnetic data studied at several sites in Hokkaido shows that the modified SGV-NWJAPAN is useful for dating. Further, the study at several sites of Vladivostok in Russia whose latitude is almost same with that of Hokkaido shows that the archaeomagnetism at the Hokkaido is useful for the dating.At the kilns of Suzu-earthenware in Noto-town of Ishikawa Prefecture, the archaeomagnetic ages are determined with less error between 13^<th> and 14^<th> centuries. These ages coincide with the archaeologically estimated ages and also with the 14C ages studied from the charcoal. In the investigated area, the survey by the ground penetrating radar was done. The survey data clear the unknown kilns underground which are confirmed by the excavation. These results contribute in the application of these areas for the national designation archaeological site.(2) By the l4C dating study, the following remarkable results are obtained.(1)the age of the end in Satsumon period, Hokkaido is determined as ca. AD.936(2)the wall painting at the Bamyan site in Afghanistan covers the age from 5, 6th to the middle of 9^<th> century(3)the war damage at Kamakura is studied with the 14C age of the bones (especially, around the age of the end in Kamakura period).Further, the valuable results are obtained about the 14C ages of the ancient iron materials and those of the cremated bones.