Leaf Stone - Konoishi

Japanese: 木の葉石 - このはいし
Leaf Stone - Konoishi

This refers to plant leaf fossils, or leaf-like fossils in hot spring deposits such as travertine and sinter. In general, it refers to plant fossils in which leaves have been buried and hardened in mud, sand, or volcanic ash. Leaf fossils are often found in strata that have accumulated in former lakes, lagoons, and bays, and serve as material for investigating the state of forests and paleoclimates at the time. Fossils from the Quaternary lake deposits in Nasushiobara City, Tochigi Prefecture, are famous.

[Kazuhiko Uemura]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

植物の葉化石、または、石灰華や珪華(けいか)のような温泉沈殿物中の葉化石様のものをいう。一般には、泥や砂あるいは火山灰に木の葉が埋もれて固まった植物化石のことをいう場合が多い。木の葉の化石は、かつての湖や潟、内湾に堆積(たいせき)した地層から発見されることが多く、当時の森林のようすや古気候を調べる資料となる。栃木県那須塩原(なすしおばら)市の第四紀の湖成層から産するものが有名。

[植村和彦]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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