2. 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.
3. Included range
● Volcanic archipelagos
○ Japanese archipelago
○ Indonesia
○ Philippine
○ Aleutian Islands
● Other archipelagos
○ Andes
○ Rocky Mountains
4. 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
5. 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
6. 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
7. 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
8. 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
