シベリア大陸
出典: フリー百科事典『ウィキペディア（Wikipedia）』
シベリア大陸（シベリアたいりく）はシベリアの大部分を構成するクラトン。アンガラ大陸ともよばれる。古生代初期には単独の大陸として存在していた。
[編集] 歴史
- ~2.5 billion years ago Siberia was part of a continent of Arctica, along with the Canadian shield
- ~1.1 billion years ago, Siberia became part of the major supercontinent of Rodinia.
- ~750 million years ago, Rodinia broke up, and Siberia became part of the minor supercontinent of Protolaurasia.
- ~600 million years ago, Protolaurasia became part of the major southern supercontinent of Pannotia.
- ~550 million years ago, Pannotia broke up and Protolaurasia split up and became the continents of Laurentia, Baltica, and Siberia.
- ~Cambrian, Siberia was an independent continent.
- ~Carboniferous, Siberia collided with the minor continent of Kazakhstania.
- ~Permian, Siberia and Kazakhstania collided with Baltica, thus completing the formation of the supercontinent Pangaea.
- ~Jurassic, Pangaea split up into the two minor supercontinents of Gondwana and Laurasia.
- ~Cretaceous, Laurasia gradually split up into the 2 continents of North America and Eurasia.
- ~Eocene, The minor continent of India collided into Asia, generating the Himalaya.
- ~Present day, Siberia is part of the continent of Asia which is part of Eurasia.
- ~250 million years future, Siberia, now in the subtropical region was part of the major supercontinent of Pangaea Ultima.
- ~400 million years future, Pangaea Ultima is disintegrated, Siberia will probably remain attached to Eurasia.
