@article{oai:rekihaku.repo.nii.ac.jp:00002438,
 author = {土生田, 純之 and Habuta, Yoshiyuki},
 journal = {国立歴史民俗博物館研究報告, Bulletin of the National Museum of Japanese History},
 month = {Jan},
 note = {application/pdf, 西毛地域の古墳出土品を鉛同位体比分析した。分析した古墳は一部に5世紀後半（井出二子山古墳・原材料は朝鮮半島産）や6世紀前半のものも含むが大半は6世紀後半～7世紀初頭に属する。さらにその中で角閃石安山岩削り石積み石室を内蔵する古墳が多い。この石室は綿貫観音山古墳や総社二子山古墳を代表とする西毛首長連合を象徴する墓制と考えられている。特に観音山古墳からは中国北朝の北斉製と考えられている銅製水瓶や中国系の鉄冑などをはじめ，新羅製品も多い。新羅製品は他の角閃石安山岩削り石積み石室出土品にも認められている。かつて倭は百済と良好な関係を結ぶ一方，新羅とは常に敵対関係にあったと考えられてきたため，学界ではこの一見矛盾する事実の解釈に苦しんできたが，筆者は「新羅調」「任那調」に由来するものと考えた。特に今回分析に供した小泉長塚1号墳の出土品中に中国華北産原料を用いた金銅製冠があったが，新羅は当該期の倭同様，銅の原料が少なく何度も遣使した北朝から何らかの形で入手した原材料を用いて制作したものを「新羅調」等として倭にもたらしたものと考えた。もちろん直接西毛の豪族連合にもたらしたのではなく，倭王権にもたらされたものが再分配されて西毛の地にもたらされたものと考えている。西毛は朝鮮半島での活動や対「蝦夷」戦に重要な役割を演じ，そのことを倭王権が高く評価していたことは『日本書紀』の記事からも窺える。こうして6世紀後半～7世紀初頭における西毛の角閃石安山岩削り石積み石室出土品から，当該期の国際情勢を窺うことができるのである。
なお，井出二子山古墳出土品に使用された銅が朝鮮半島産である可能性が高いことは，当該期の状況（加耶や百済との交流を中心とする）から見て矛盾しないものである。, Artifacts from multiple Japanese tumuli (kofun) in the Seimo region were subjected to lead isotope ratio analysis. The tumuli analyzed included some from the latter half of the 5th century (Ide Futagoyama Tumulus: raw materials originating in the Korean Peninsula) and from the first half of the 6th century, but the majority belong to the latter half of the 6th century to the early 7th century. Furthermore, most of those contain chambers of carved, piled stones of amphibole andesite. This stone chamber is considered iconic of the burial practices of the alliance of chiefs in the Seimo area, as represented by the Watanuki Kannonyama Tumulus and Soja Futagoyama Tumulus. Especially in the Kannonyama Tumulus, copper water jars and Chinese iron helmets thought to be made in Northern Qi, a Northern Dynasty of China, have been found, along with many items made in Silla. Silla products have been found among artifacts from other chambers of carved, piled stones of amphibole andesite. The academic world had struggled to interpret this apparently contradicting fact, as it had been thought that Wa had constantly been at odds with Silla while carrying on a good relationship with Baekje. However, the writer theorizes that these derive from "Sillaesque" and "Mimanaesque." In particular, there was a gilt bronze crown made of raw materials originating in North China among the artifacts from Koizumi Nagatsuka Tumulus No. 1 analyzed for this study. Like Wa of the time, Silla did not have much raw copper materials, and the writer theorizes that Silla used raw materials procured in some way from the Northern Dynasty, to which it had sent many envoys, crafted the articles, and conveyed "Sillaesque" and other styles to Wa. Of course, the articles are not assumed to have been brought directly to the alliance of clans in the Seimo area, but they are assumed to have been brought to the Wa government then redistributed and brought to the land of Seimo. Seimo played a vital role in activities on the Korean Peninsula and in battles against the Emishi, and entries in Nihon Shoki (Chronicles of Japan) show that this was highly valued by the Wa government. As has been related, we can peer into the international affairs of the time through artifacts from chambers of carved, piled stones of amphibole andesite in Seimo from the latter half of the 6th century to the early 7th century.
The fact that the copper used in artifacts from Ide Futagoyama Tumulus has a high probability of having originated in the Korean Peninsula is consistent with the circumstances of the time (mainly interaction with Gaya and Baekje).},
 pages = {15--29},
 title = {[論文] 古墳時代上毛野における青銅製品の系譜},
 volume = {213},
 year = {2019},
 yomi = {ハブタ, ヨシユキ}
}