| 名稱 木化石,硅化木 | Name Petrified wood fossil |
| 地質年代 / | Geological Age / |
| 描述 木化石是幾百萬年或更早以前(最少也要七，八百萬年)的樹木被迅速埋葬地下後，木質部分被地下水中的SiO₂(二氧化矽)交換而成的樹木化石。它保留了樹木的木質結構和紋理。顏色為土黃、淡黃、黃褐、紅褐、灰白、灰黑等，拋光面可具玻璃光澤，不透明或微透明，因部分木化石的質地呈現玉石質感，又稱為樹化玉或矽化木。矽化木是數億年前的樹木因種種原因被埋入地下，在地層中，樹幹周圍的化學物質如二氧化矽、硫化鐵、碳酸鈣等在地下水的作用下進入到樹木內部，替換了原來的木質成分，保留了樹木的形態，經過石化作用形成的植物化石，因其中所含的二氧化矽成分多，所以，常常稱為矽化木。 | Description Petrified wood (from the Latin root petro meaning “rock” or “stone”; literally “wood turned into stone”) is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals (mostly a silicate, such as quartz), while retaining the original structure of the stem tissue. Unlike other types of fossils which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. |
| 地點 / | Location / |
| 參考 Reference https://en.m.wikipedia.org/wiki/Petrified_wood https://www.google.com/url?sa=t&source=web&rct=j&url= | |
| 編者 由 3C (33) 邱鍳洲 於 30/5/2019 編寫 3E (8) 黎子朗 於31/5/2019最後編改 | Editor Created by 3C (33) Yau Kam Chau on 30/5/2019 Last modified by 3E (8) Lai Chi Long as on 31/5/2019 |
