MOUNT MCKINLEY

Mount McKinley, also known as Denali, is the highest peak in North America, located in southern Alaska. Rising about 18,000 feet, it is part of the Denali Fault region. The mountain features two peaks, glaciers, and permanent snowfields, and is the centerpiece of Denali National Park and Preserve.

Last Updated on 23rd January, 2025
4 minutes, 25 seconds

Description

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Context:

Among the slew of executive orders signed by President Donald Trump on his first day in office was one titled “Restoring Names that Honor American Greatness”.

About Mount McKinley

Feature

Details

Location

Near the center of the Alaska Range, south-central Alaska, USA

Significance

Highest peak in North America.

Height

Rises about 18,000 feet (5,500 meters) from the Denali Fault.

Formation

Uplifted giant blocks of granite during tectonic activity ~60 million years ago.

Peaks

Two peaks: a higher southerly summit and a lower northern summit.

Snowfields

The upper half is covered with permanent snowfields.

Glaciers

Kahiltna Glacier, Muldrow Glacier, Peters Glacier, Ruth Glacier, Traleika Glacier

National Park

The central feature of Denali National Park and Preserve.

Key facts about the Denali Fault

  • Located in southern Alaska, it has played a vital role in shaping Earth's geological history.
  • The study reveals that three sites along the Denali fault were once part of a single geological formation that symbolized the final joining of two land masses millions of years ago.
  • More than 300 miles (483 km) of horizontal movement along the fault has torn apart this single formation as a result of millions of years of tectonic activity.
  • These three sites once formed a terminal suture zone, indicating the final stage of plate tectonic integration into a larger mass.

About North America Physical Features

Feature

Details

Western Cordilleras

Young fold mountains from Alaska to the Andes; include the Rocky Mountains, Alaska Range, Cascades, Sierra Nevada, and Sierra Madre; part of the Pacific Ring of Fire.

Central Lowlands

Stretch from Arctic Shores to the Gulf of Mexico; fertile plains; includes Canadian Shield (Great Lakes: Superior, Michigan, Huron, Erie, Ontario).

Eastern Highlands

Old fold mountains (Laurentian Highlands in Canada, Appalachians in the USA); less than 2,000m in height; steep slopes cause waterfalls.

Major Gulfs

Gulf of Mexico, Gulf of Alaska, Gulf of California, Gulf of St. Lawrence.

Major Islands

Vancouver Island, Greenland, Prince of Wales Island, Hawaii Island, Cuba, Bermuda Island.

Drainage Patterns

Rivers draining into: the Gulf of Mexico (Mississippi, Missouri), Atlantic Ocean (St. Lawrence), Arctic Ocean (Mackenzie, Nelson), and Pacific Ocean (Yukon, Colorado).

Seas

Caribbean Sea, Beaufort Sea, Hudson Bay, Labrador Sea, Bering Sea.

Inland Drainage

Great Basin (Rocky Mountains); rivers terminate in saline lakes like the Great Salt Lake.

Major Lakes

Great Lakes (Superior, Michigan, Huron, Erie, Ontario), Lake Winnipeg, Great Bear Lake, Great Salt Lake, Lake St. Clair, and Lake Athabaska.

Source:

Indian Express

PRACTICE QUESTION

Q.Which of the following lakes is located in North America and is known for being the largest freshwater lake by surface area?

  1. Great Slave Lake
  2. Lake Superior
  3. Great Bear Lake
  4. Lake Ontario

Select the correct answer using the codes below:

A) 1, 2, and 3

B) 2 and 4

C) 1, 3, and 4

D) 2 only

Answer: B

Explanation:

Lake Superior is the largest freshwater lake by surface area in North America and the world.

Lake Ontario is one of the five Great Lakes of North America, located between the United States and Canada.

Other lakes:

Great Slave Lake is located in Canada, but it is not the largest by surface area in North America.

Great Bear Lake is also located in Canada but is smaller than Lake Superior.

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