mountainous and glacial landforms
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Mounta nous &
Glac al Landforms
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Mountainous Landforms
- are those that rise higher than the rest of their surroundings.
- exhibit slopes, summit areas and local reliefs.
- they can be created by different tectonic activities.
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Volcanoes
• Are landforms that are controlled by geological processes that form them and continually act on them after their formation
Anak Krakatau in Indonesia
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Volcanoes• The volcano’s cone-
shaped structure or edifice is carved out by the more or less symmetrical accumulation of lava and other pyroclastic materials around it’s central vent system
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Hills• are elevated portions of
land that are formed by geologic activities such as faulting
• usually covered with grass and are used as grazing lands for goats, cattle and carabaos
• Smaller than mountainsChocolate Hills in Bohol
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Hills
• During dry season, the green grasses covering the hills turn brown making the landforms appear like thousands of chocolate hills
The Painted Hills in US
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Valley
• Also called as Dale is a low area between hills, often with a river running through it.
• Shapes of Valleys– V-shaped Valley– U-shaped Valley
Ifugao Valley
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Valley• A valley formed
by flowing water, or river valley, is usually V-shaped. The exact shape will depend on the characteristics of the stream flowing through it.
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Valley
• A tunnel valley is a large, long, U-shaped valley originally cut under the glacial ice near the margin of continental ice sheets such as that now covering
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Glacial Landforms
- results of the actions of the glaciers.- are huge slow-moving bodies of ice.- created by the movement of large
ice sheets during the Quaternary Glaciations
- Two types of Glaciers:1. Alpine2. Continental
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Continental Glaciers
• Continental Glaciers are formed in cold polar regions
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Alpine Glaciers
•Alpine Glaciers are formed in high mountains
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Plateaus• Also known as table lands
or flap-topped mountains• Are portions of land
elevated thousands of feet above surroundings
• They are the results of geologic uplifts or the slow movement of large parts of stable areas of Earth’s crust
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Plateaus
• Causes of formations of Plateaus–Volcanic
Eruptions–Weathering
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Plateaus
• covers about 45% of Earth’s land surface
• low plateaus are often used for farming
• high plateaus are suitable for livestock grazing
Tibetan Plateau
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Thank you for listening!