The Long Range Mountains are a series of mountain

Mountain

Image:Himalaya_annotated.jpg|thumb|right|The Himalayan mountain range with Mount Everestrect 58 14 160 49 Chomo Lonzorect 200 28 335 52 Makalurect 378 24 566 45 Mount Everestrect 188 581 920 656 Tibetan Plateaurect 250 406 340 427 Rong River...

s along the west coast of the Canadian

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 island of Newfoundland. They also form the northernmost section of the Appalachian

Appalachian Mountains

The Appalachian Mountains #Whether the stressed vowel is or ,#Whether the "ch" is pronounced as a fricative or an affricate , and#Whether the final vowel is the monophthong or the diphthong .), often called the Appalachians, are a system of mountains in eastern North America. The Appalachians...

 chain on the eastern seaboard of North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

. In 2003 it was announced that the International Appalachian Trail

International Appalachian Trail

The International Appalachian Trail is a hiking trail which runs from the northern terminus of the Appalachian Trail at Mount Katahdin, Maine, through New Brunswick, to the Gaspé Peninsula of Quebec, after which it takes bridge crossings to Nova Scotia and Prince Edward Island, a ferry ride to...

 would be extended through the Long Range Mountains.
Around 1,200 million years ago, in the Precambrian

Precambrian

The Precambrian is the name which describes the large span of time in Earth's history before the current Phanerozoic Eon, and is a Supereon divided into several eons of the geologic time scale...

 era, the ancient core of what is now eastern North America collided slowly with another continent to form a vast mountain range. All that remains today are the deeply eroded granites and gneisses of the Long Range mountains.

In the Precambrian, the supercontinent began to break apart. As it split, steep fractures formed and filled with molten rock from below. This magma cooled into the diabase dykes seen in the cliffs of Western Brook Pond and Ten Mile Pond.

By 570 million years ago the continent finally rifted apart, and the resulting basin became an ocean called the Iapetus Ocean

Iapetus Ocean

The Iapetus Ocean was an ocean that existed in the Neoproterozoic and Paleozoic eras of the geologic timescale . The Iapetus Ocean was situated in the southern hemisphere, between the paleocontinents of Laurentia, Baltica and Avalonia...

. Some of the rocks of Gros Morne National Park were part of the continental margin

Continental margin

The continental margin is the zone of the ocean floor that separates the thin oceanic crust from thick continental crust. Continental margins constitute about 28% of the oceanic area....

 on the western side of this new ocean, south of the Equator.

Running along the Gulf of St. Lawrence, the range comprises the following sections:

• Anguille Mountains
  Anguille Mountains
  The Anguille Mountains are a section of the Long Range Mountains located on the west coast of the island of Newfoundland, Canada, along the Gulf of St. Lawrence.Covering the first 40 mi/64 km area from Cape Anguille along Bay St...
  
  ,
• Lewis Hills
  Lewis Hills
  The Lewis Hills is a section of the Long Range Mountains located on the west coast of the island of Newfoundland, along the Gulf of St. Lawrence....
  
  ,
• Tablelands (a section of the Earth's mantle
  Mantle (geology)
  The mantle is a part of a terrestrial planet or other rocky body large enough to have differentiation by density. The interior of the Earth, similar to the other terrestrial planets, is chemically divided into layers. The mantle is a highly viscous layer between the crust and the outer core....
  
   exposed at the surface)
• main section of the Long Range Mountains (running northeast from the Tablelands through Gros Morne National Park
  Gros Morne National Park
  Gros Morne National Park is a world heritage site located on the west coast of Newfoundland. At , it is the second largest national park in Atlantic Canada ....
  
  

Highest Peaks of the Long Range Mountains

Rank	Name	m	ft
1	The Cabox The Cabox The Cabox is a mountain located in western Newfoundland, near the coastal city of Corner Brook and is the highest peak in Newfoundland. It is high and is the central peak of the Lewis Hills of the Long Range Mountains, which are a range in the Appalachian Mountains....	814	2671
2	Gros Morne	807	2644
3	Blue Mountain	800	2625
4	Big Level	795	2608
5	Round Hill	763	2653
6	Rocky Harbour Hill	756	2480
7	Mount Saint Gregory	686	2251
8	Gros Paté	673	2208
9	Big Hill	659	2162
10	Old Crow	649	2129