Ecchuyama ruins - Ecchuyama ruins

Japanese: 越中山遺跡 - えっちゅうやまいせき
Ecchuyama ruins - Ecchuyama ruins
A collective name for a group of archaeological sites from the late Paleolithic to Mesolithic periods in Etchuyama, Tsuruoka City, Yamagata Prefecture. The site is located on two vast terrace surfaces, the Otori Naehata surface (GtII surface, 100m above sea level) at the low level of alluvial deposits, and the Etchuyama Reclamation Area (GtI surface, 130m above sea level) at the middle level, in the Tateiwa Terrace Group that developed on the right bank of the Aka River and Bonji River. The layers containing the stone tools are the top of the Tsuruoka Loam Formation that covers the terraces. Site A on the GtII surface was the first Paleolithic site excavated in the Tohoku region in 1958. A joint survey was subsequently conducted by the Chido Museum (Tsuruoka City), Yamagata University, and the Asahi Village Board of Education. At least four stages of stone tool culture have been identified: (1) one mainly composed of Kokufu-type knife-shaped stone tools (Site K), (2) one accompanied by semi-bilaterally processed stone points and knife-shaped stone tools (Site A'), (3) one mainly composed of microblades (Sites S, M, etc.), and (4) one mainly composed of bilaterally processed stone points (Site A).

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
山形県鶴岡市越中山にある,後期旧石器時代から中石器時代にかけての遺跡群の総称。赤川と梵字川の右岸に発達した立岩段丘群中,洪積低位の大鳥苗畑面 (GtII面,標高 100m) と中位の越中山開拓地面 (GtI面,標高 130m) の二つの広大な段丘面に立地している。石器群の包含層はいずれも段丘を覆う鶴岡ローム層の最上部である。 GtII面のA遺跡は,1958年東北地方で最初に発掘調査された旧石器時代遺跡である。その後,致道博物館 (鶴岡市) ,山形大学,朝日村教育委員会が協同調査を実施。少なくとも四つの階程の石器文化が明らかにされており,(1) 国府型ナイフ形石器を主体とするもの (K遺跡) ,(2) 半両面加工尖頭器,ナイフ形石器を伴うもの ( A' 遺跡) ,(3) 細石刃を主体とするもの (S,M遺跡など) ,(4) 両面加工尖頭器を主体とするもの (A遺跡) があることがわかった。

出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報

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