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Discuss various external Geological processes with special mention of Aeolian landforms.
The earth's crust is constantly undergoing geological changes caused by internal and external forces which create new landforms. The external forces are working vigorously to wear away the surface and the interaction of these forces gives rise to present day landforms. The process is carried out inRead more
The earth’s crust is constantly undergoing geological changes caused by internal and external forces which create new landforms. The external forces are working vigorously to wear away the surface and the interaction of these forces gives rise to present day landforms. The process is carried out in four phases-
Aeolian landforms are produced by wind erosion and deposition process. This process produce a number of distinctive features-
- Mushroom rocks- these have been eroded, pitted, etched, grooved and polished by ice crystals or sand carried by wind.
- Yardangs- these are ridge separated parallel troughs carved into softer rock that runs in the direction of wind.
- Zeugen- these are the tabular masses which have a layer of soft rock laying beneath a surface of more resistant rock.
See lessDiscuss various external Geological processes with special mention of Aeolian landforms.
The earth's crust is constantly undergoing geological changes caused by internal and external forces which create new landforms. The external forces are working vigorously to wear away the surface and the interaction of these forces gives rise to present day landforms. The process is carried out inRead more
The earth’s crust is constantly undergoing geological changes caused by internal and external forces which create new landforms. The external forces are working vigorously to wear away the surface and the interaction of these forces gives rise to present day landforms. The process is carried out in four phases-
Aeolian landforms are produced by wind erosion and deposition process. This process produce a number of distinctive features-
- Mushroom rocks- these have been eroded, pitted, etched, grooved and polished by ice crystals or sand carried by wind.
- Yardangs- these are ridge separated parallel troughs carved into softer rock that runs in the direction of wind.
- Zeugen- these are the tabular masses which have a layer of soft rock laying beneath a surface of more resistant rock.
See lessGiving a brief account of the lakes formed due to Earth's movement, discuss the economic and ecological significance of lakes.
About a fifth of world's land is made up of desserts. All the desserts are confined to 15°-30° parallel of latitude north and south of equator. They lie in the trade wind belt on the western parts of continent where trade winds are offshore. The work of winds and water in eroding elevated uplands, tRead more
About a fifth of world’s land is made up of desserts. All the desserts are confined to 15°-30° parallel of latitude north and south of equator. They lie in the trade wind belt on the western parts of continent where trade winds are offshore. The work of winds and water in eroding elevated uplands, transporting the worn off materials and deposting them else where, has given rise to five distinct kinds of dessert landscape.
1. Rocky dessert- This consists of large stretches of bare rocks, swept clear of sand and dust by the wind. The exposed rocks are thoroughly smoothed and polished.
2. Stony dessert- This is composed of extensive sheets of angular pebbles and gravels which the winds are not able to blow off.
3. Sandy dessert- This is a sea of sand which typifies the popular idea of dessert secenary. The intricate patterns of ripples on the dune surface indicate the direction of the winds.
4. Badlands- The term badlands was first given to an arid area in South Dakota, USA, where the hills were badly eroded by occasional rain-storm into gullies and ravines.
5. Mountain dessert- Some dessert are found on highlands such as plateau and mountain ranges. Erosion has dissected the dessert highlands into harsh, serrated outlines of chotic peaks and craggy ranges.
See lessExplaining their formation, provide an account of the various kinds of deserts found across the world along with their characteristics.
About a fifth of world's land is made up of desserts. All the desserts are confined to 15°-30° parallel of latitude north and south of equator. They lie in the trade wind belt on the western parts of continent where trade winds are offshore. The work of winds and water in eroding elevated uplands, tRead more
About a fifth of world’s land is made up of desserts. All the desserts are confined to 15°-30° parallel of latitude north and south of equator. They lie in the trade wind belt on the western parts of continent where trade winds are offshore. The work of winds and water in eroding elevated uplands, transporting the worn off materials and deposting them elsewhere, has given rise to five distinct kinds of dessert landscape.
1. Rocky dessert- This consists of large stretches of bare rocks, swept clear of sand and dust by the wind. The exposed rocks are thoroughly smoothed and polished.
2. Stony dessert- This is composed of extensive sheets of angular pebbles and gravels which the winds are not able to blow off.
3. Sandy dessert- This is a sea of sand which typifies the popular idea of dessert secenary. The intricate patterns of ripples on the dune surface indicate the direction of winds.
4. Badlands- The term badlands was first given to an arid area in South Dakota, USA, where the hills were badly eroded by occasional rain-storm into gullies and ravines.
5. Mountain dessert- Some dessert are found on highlands such as plateau and mountain ranges. Erosion has dissected the dessert highlands into harsh, serrated outlines of chotic peaks and craggy ranges.
See less