{"id":42390,"date":"2023-11-27T05:36:31","date_gmt":"2023-11-26T20:36:31","guid":{"rendered":"http:\/\/kochihen.replan.ne.jp\/?p=42390"},"modified":"2023-11-30T11:13:58","modified_gmt":"2023-11-30T02:13:58","slug":"%e3%80%90%e7%9f%b3%e5%99%a8%e6%99%82%e4%bb%a3%e3%81%ae%e6%8a%80%e8%a1%93%e4%bc%9d%e6%89%bf%e3%81%a8%e6%9c%89%e7%94%a8%e8%b3%87%e6%ba%90%e6%8e%a2%e7%a9%b6%e3%80%91","status":"publish","type":"post","link":"http:\/\/kochihen.replan.ne.jp\/?p=42390","title":{"rendered":"\u3010\u77f3\u5668\u6642\u4ee3\u306e\u6280\u8853\u4f1d\u627f\u3068\u6709\u7528\u8cc7\u6e90\u63a2\u7a76\u3011"},"content":{"rendered":"

\"\"<\/a>
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\n\"\"<\/a>
\n\"\"<\/a>
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\n\"\"<\/a>
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English version\u2b07<\/p>\n

The transmission of technology and the search for useful resources in the Stone Age.
\nDad, this stone broke when it was spun vertically. That’s funny! Well, I guess we should go get the obsidian together. A scene of technology transmission between father and son in the Stone Age. A scene from the transmission of technology between father and son in the Stone Age.<\/p>\n

The photo is from a diorama exhibit at the National Museum of Japanese History (Chiba Prefecture). It is a very clear and pleasing diorama that symbolically depicts a scene of life in the Stone Age. In the Stone Age, people lived a lifestyle of hunting and gathering while “playing” on the side of humans against mobile resources in the form of animals.
\nIn such a lifestyle, the pursuit of usefulness of stone tools by society as a whole would have been widely pursued. In this scene, a boy is looking closely at a chipped piece of stone tool, probably obsidian, and his father is looking at his child.
\nThe father looked at his son and said, “I wonder why it is chipped and broken like this.
\n“Oh, I wonder if he is interested in stone tools…” “Maybe it’s time for me to go with him to collect obsidian…”
\nIt seemed to me that the film depicted an opportunity for the father and son to pass on their skills to each other.<\/p>\n

Obsidian is considered to be the most symbolic “tool” of the Stone Age. Obsidian, also known as natural glass, was used as the main material for various tools throughout the Paleolithic and Jomon periods, until iron was introduced in the Yayoi period.
\nThe following is an abstract quotation from “General Introduction: Horizon of Research on the Obsidian Site of Origin – Hiroyuki Sato, Professor, Graduate School of Humanities and Sociology, Faculty of Letters, the University of Tokyo\/2016 (published in the August 2014 issue of the Archaeological Journal)”. The figure is from the “Shirataki Geopark” exhibit at Shirataki, Engaru Town, Hokkaido, which was introduced yesterday.
\n~Obsidian is a volcanic glass formed when magma ejected by volcanic eruptions cools rapidly, and its production areas are spread around the world, mainly in major volcanic belts. Since the composition of magma differs from one volcano to another, subtle differences in mineral and chemical compositions enable accurate identification of its production area. ~ (in Japanese)<\/p>\n

\u301cThe large source areas are located near large volcanic craters and are therefore located in mountainous regions. On the other hand, human activities in the archipelago from the Paleolithic to the Jomon period (38,000-11,700 years ago) were conducted on flat areas of plateaus and gentle slopes of hills, so the collection of obsidian had to be planned. In this period, hunting of medium to large-sized animals, which migrated repeatedly in response to the climate, was the main livelihood. Therefore, Paleolithic people maintained their livelihood by hunting, mainly on the plains, with systematic migration over large areas, while adopting a strategy of going to the mountains to collect obsidian, which was essential as a material for tools, when necessary. ~.
\nThe above father and son situation seems to convey this timing situation, doesn’t it? Dr. Sato’s text conveys a comprehensive analysis of climate change, vegetation distribution, and the behavioral principles of the animals at that time, and is truly easy to understand. I believe that the historical correlation between useful resources and human lifestyles can be captured in an active manner.
\nI feel as if I could see the close relationship between geology and history in this borderline area.<\/p>\n","protected":false},"excerpt":{"rendered":"

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