အင်ကြင်းကျောက်တွေဖြစ်ပေါ်လာပုံ HOW IS FOSSILIZED WOOD FORMED?
Автор: Bahuthuta Garden (အထွေထွေဗဟုသုတ)
Загружено: 2020-01-23
Просмотров: 31244
Описание:
To become petrified, a tree must become buried in an environment with little to no oxygen. This usually happens in nature following a volcanic explosion when the tree is covered in volcanic ash. Without oxygen, the wood cannot rot.
Over time, minerals such as manganese, iron and copper penetrate the wood from surrounding water and earth. The minerals eventually take the place of the wood, giving the now fossilized wood a bright array of colours depending on the minerals in the surrounding soil. Pure quartz is colourless, but combined with contaminants, the quartz crystals take on different colours and tones such as yellow, orange or red. The end result is fossil wood - a colourful collection of minerals that take on the exact form of the original tree or trunk.
Повторяем попытку...
Доступные форматы для скачивания:
Скачать видео
-
Информация по загрузке:
