注目の話題: 離婚し30年会ってない父親に会う場合; どっちの妻がいい？; 独身、恋愛経験なし。これから何を目標に生きたらいいか？

Let's enjoy English!

No.201　12/10/21 23:24
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【Iceland】

《A place like a training school for astronauts》

Plenty of people pay attention to Iceland as an island where we can see dynamic activities on the earth.🌏

The theory of continental drift is next one.There used to be the pangaea on the earth in prehistoric time.I'm sure the Pangaea is by far more tremendous continent more than other one on the earth.🌏

The Pangaea separated into several continents,and they have changed into present situation.The theory like a jigsaw puzzle is the theory of continental drift.Iceland verifies the theory.😃

The theory of plate tectonics express the theory of continental drift like next.😃

The convection 対流 of mantle makes a continent move.There are some places which the convection goes out.They are usually on submarine volcanos.🌋

We can't see almost all of those places,for they are in the sea,but we can see only two places with our own eyes.The one is リフトバレー in southern Africa,and other is ギャウ.They are crack on the earth.🌏