Geographical Features
- Geographical features are the components of the Earth.
- Landform: Land forms are the recognizable unit of natural features on the earth's surface with varying shape, size and structure. It could be mountains, plateaus, valleys or small features like hills, eskers or canyons.
- Landscape: Large track of earth's surface or many related landforms with an aesthetic appeal together make up landscape.
- Topography: The arrangement of natural or artificial physical features of an area on the earth's surface, their inter relationship and configuration of structural entity is known as topography.
- Terrain: It is the physical characteristics of natural feature of an area, i.e. its landforms, vegetation and soils.
Classification of Landforms
Mountains: It is a naturally uplifted portion of earth's surface from its surroundings.
Fold Mountains: Folded mountains were developed due to the tectonic activities where the upper part of the earth's crust are folded and warped toproduce rocky outcrops, hills or mountain. Alps in Europe, Rockies of North America, Andes of South America, Himalayas of Asia and Atlantic of North Africa.
Block Mountains: Block mountains have developed due to swelling of earth's crust bound by tectonic fault and characterised by massiveness, stup slopes, and comparatively smooth topography. Varger in France, Black forest mountains in Germany and Salt Range in Pakistan.
Volcanic Mountains: Mountain formed due to the accumulation of molten lava flowing out from a volcanic eruption. Hence they are generally cone shaped mountains with a depression at the top. Mount Mauna Loa in Hawai Islands, Fuji Yoma of Japan and Mount Popa in Central Myanmar.
Residual or Dissected Mountains: Nilgiris, Parasnath, Girnar and Rajmahal.
Plateau
- Plateaus are extensive area characterized by flat and rough top surface, steep sidewalls which rise above the neighbouring ground surface at least for 300 metres.
- Causes about 33% of the total earth's area.
Classification of plateau
Plateau formed by exogenetic processes. These are-
(i) Glacial Plateau, e.g. Garhwal plateau, Greenland, Antarctica.
(ii) Fluvial Plateau, e.g. Kaimur plateau, Bhander plateau, Rewa Plateau, Rohtas Plateau.
(iii) Aeolian Plateau, e.g. Porwar Plateau (Pak), Loess plateau (China).
Plateau formed by endogenetic processes. These are-
(i) Intermontane Plateau: The plateaus v/hich are parlly or fully enclosed by mountains are known as intermontane plateaus. These are the results of the mountain- building process which was accompanied by a vertical uplift of tlie adjoining enclosed lands, e.g. Tibetan plateau, Bolivian plateau, Peruvien plateau, Columbian plateau and Mexican plateau.
(ii) Piedmont Plateau : It is situated at the foot of a mountain, it is bounded on the opposite sides by a plain or an ocean. It is also called the plateau of denudation because areas which were formerly high have now been reduced in elevation by various agents of erosion, e.g. Appalachian plateau, Patagonien plateau (Argentina).
(iii) Dome
more...