Major Mountain Ranges

1. The Andes

• Continent: South America
• Length: 7,000 km (Longest continental range)
• Average Height: ~4,000 m
• Highest Peak: Mount Aconcagua (6,962 m, dormant volcanic origin)
• Volcanoes: Home to the world’s highest volcanoes
• Ojos del Salado (6,893 m) is the highest active volcano on Earth
• Geological Origin: Part of the American Cordillera and Pacific Ring of Fire

2. The Rockies

• Continent: North America
• Part of: American Cordillera
• Features:
  • Includes Alaska Range, Brooks Range, Sierra Nevada, Cascades
  • Extends into Mexico through Sierra Madre Occidental/Oriental
• Cordillera Explained:
  • Almost continuous mountain chain through Americas & Antarctica
  • Backbone of the volcanic arc along Pacific Ring of Fire

3. Cascade Range

• Region: Western North America
• Geological Feature: Made up of thousands of small short-lived volcanoes
• Major Volcano: Mount St. Helens
• Cause of Volcanism: Subduction of Juan de Fuca Plate beneath North American Plate
• Part of: Pacific Ring of Fire

4. Great Dividing Range (Eastern Highlands)

• Continent: Australia
• Other Names: Eastern Highlands, Australian Alps
• Geological Formation: Due to rifting

5. Transantarctic Mountains

• Continent: Antarctica
• Significance: Divides East and West Antarctica
• Remoteness: Among the least explored

6. Ural Mountains

• Continent: Eurasia (Russia, Kazakhstan)
• Formation: Collision of Laurussia and Kazakhstania continents
• Significance:
  • Boundary between Europe and Asia
  • Rich in minerals, mined since the 18th century

7. Atlas Mountains

• Continent: Africa (Algeria, Morocco, Tunisia)
• Length: ~2,500 km
• Highest Peak: Toubkal (4,165 m) in Morocco
• Formation: Collision of African and European plates

8. Himalayan Range

• Continent: Asia (India, Nepal, Bhutan, China)
• Highest Peak: Mount Everest (8,848 m)
• Western Anchor: Nanga Parbat (near Indus)
• Eastern Anchor: Namcha Barwa (near Brahmaputra bend)
• Width: 400 km (West) to 150 km (East)
• Geology: Young fold mountains of sedimentary & metamorphic rock
• Formation: Collision of Indo-Australian Plate with Eurasian Plate
• Impact: Creates Central Asian deserts (e.g., Taklamakan, Gobi)
• Related formations: Arakan Yoma in Myanmar, Andaman-Nicobar Islands

9. Alps

• Continent: Europe (France, Italy, Switzerland, etc.)
• Formation: Collision of African & Eurasian plates
• Process: Folding and thrusting of marine sedimentary rocks
• Highest Peak: Mont Blanc (4,810 m)
• Unique Feature: Contains 100+ peaks above 4,000 m (Four-thousanders)

10. Altai Mountains

• Location: Central Asia (Russia, China, Mongolia, Kazakhstan)
• Significance: Source of major rivers like Ob and Irtysh

11. Western Ghats

• Country: India
• Length: ~1,600 km
• Other Name: Sahyadri Hills
• Importance:
  • UNESCO World Heritage Site
  • Rich in biodiversity
  • Crucial for Indian monsoon system

12. Drakensberg

• Continent: Africa (South Africa & Lesotho)
• Length: ~1,125 km
• Cultural Significance: San rock art
• Ecological Importance: Biodiversity hotspot

13. Aravalli Range

• Country: India
• Length: ~800 km
• Age: One of the oldest fold mountains on Earth
• Region: From Rajasthan to Delhi
• Highly eroded due to geological age

Beyond Earth:

• Olympus Mons (Mars)
  • Height: ~26 km
  • Tallest mountain and highest volcano in the Solar System
  • Still considered active

Longest Mountain Ranges in the World (by Length)