About Pacific Ring of Fire● A volcanic belt ○ It is a horseshoe shape ○ In 40,000 kilometers ○ Surround with the Pacific● Large numbers of earthquakes and volcanic eruptions ○ Occur in the basin of the Pacific Ocean.
Included range● Volcanic archipelagos ○ Japanese archipelago ○ Indonesia ○ Philippine ○ Aleutian Islands● Other archipelagos ○ Andes ○ Rocky Mountains
Formation and feature● To sink ○ The oceanic plate of the Pacific sink ○ Peripheral continental plates and oceanic plates are sunk● It brisks up volcanic and seismic activity ○ Because of above● A young orogenic belt
About young orogenic belt● Formed after the Mesozoic and Cenozoic era ○ Continue orogenic movements and activity ○ Volcanic and seismic activity is active ○ Natural disasters occur frequently● Into two parts ○ Pacific Ring of Fire ○ Alpide belt
About young orogenic belt (2)● A time received erosion is very short ○ Because of this, it forms steep mountainous regions and crescent-shape archipelagos ○ For example: ■ The Japanese archipelago ■ The Alps● Underground resourses are rich ○ For example: ■ Gold, silver, copper, tin and zinc ■ Oil
About Alpide belt● Another belt of young orogenic belt● North side - to swell up ○ Mountain ranges ○ Highlands● South side - somewhat to sink ○ Plains ○ Shallow seas
Conclusion● Young orogenic belt ○ Pacific Ring of Fire ○ Alpide belt● Formed after the Mesozoic and Cenozoic era● A time received erosion is very short● Underground resourses are rich