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西村 ジオサン
@NishimuraKoich2
大阪万博休憩所『石のパーゴラ』４.２億円　危険性 地質学の専門家の意見 写真の石は岡山の『万成石』に代表される『領家花崗岩』の一種で【中粒普通角閃石花崗岩】です 普通塊状硬質ですが黒雲母の配列などにより弱い片状構造（異方性）が認められます ①⇒②へ続く #大阪万博中止でええやん
The image shows a large stone, identified as a type of 'Ryoke Granite' known as 'Mansei Stone' from Okayama, being inspected by individuals wearing gloves. The stone is part of the 'Stone Pergola' rest area for the Osaka Expo, which reportedly cost 420 million yen. The image highlights a potential safety concern, as indicated by the text overlay in Japanese, which discusses the geological properties of the stone and its structural weaknesses. The stone is marked with arrows and a yellow circle to point out specific areas of concern, suggesting a focus on the structural integrity and safety of the construction. The context provided by the post text emphasizes the importance of geological expertise in evaluating the suitability of materials for public structures.
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