On the eastern coast of the Pacific Ocean, in North and South America, there is a long and tall mountain range that clings to the coast. Australia, on the west coast of the Pacific Ocean, also has a large watershed that clings to the coast.
This mountain range in the Americas begins in Alaska, crosses North America, enters the Isthmus of Central America, and crosses the South American continent to Tierra del Fuego in the southernmost part. We call it the Cordillera Mountains.
Australia's Great Dividing Range, starting from the Cape York Peninsula and running south along Australia's east coast, across the Channel to Tasmania. Some call it Australia's Cordillera Hills.
The mountains on the west coast of North America are due to the fact that the region is located in the Pacific Rim Seismic Zone, where the crust of the Pacific Plate and the North American Plate is squeezed and raised, and the geological activity is frequent, forming the Coast Range.
The mountains on the west coast of South America are due to the collision and extrusion between the Antarctic plate and the South American plate, the earth's crust is active and faults are developed, resulting in broken rock formations and weak resistance to erosion.
The formation of Australia's Great Dividing Range, on the other hand, has no obvious signs of plate collisions, such as volcanic activity, with only sporadic extinct volcanoes. In recent years, some scientists have not recognized the direct link between the formation of the Great Dividing Range and plate collisions.
Therefore, the Great Dividing Range was formed by the weathering of ancient mountain ranges over a long period of time, and its proximity to the coastline was the result of land and sea subsidence.