Physiography

Physiography: With about half of its surface below the 10m-contour line, Bangladesh is regain at the lowermost reaches of the three mighty rivers, the ganges, the brahmaputra and the meghna. Coinciding with the air division of the country based on aggrandizement and relief, the land foot be divided into three major physical units: third hills (66 million years to 2 million years in front the present), pleistocene terraces (2 million years to 0.1 million years in advance the present) and Recent plains (began forming about 0.1 million years ago and even so being formed). The heavy monsoon rainfall coupled with the low altitude of major parts of the country makes floods an annual phenomenon in Bangladesh.
quaternate (began about 2 million years ago and extends to the present) sediments, deposited in general by the group (padma), Brahmaputra (jamuna) and Meghna rivers and their numerous distributaries, cover about three-quarters of Bangladesh. The physiography and drainage pattern of the vast alluvial plains in the central, Yankee and western regions experienced considerable alterations in recent times. The depository of Quaternary sediments was influenced and controlled by structural activities.



The eastward transpose of the Ganges and tista as well as the significant westward shift of the Brahmaputra during the last 200 years gives evidence of epeirogenic movements even in recent days. Hillocks and hills are confined to a narrow impoverish along the southern spur of the Shillong Plateau, to the eastern and southern portions of Sylhet set up and to the Chittagong Hill Tracts in the southeast of the country bordering upon the Indian states of Tripura and Mizoram and Myanmar.
In the context of physiography, Bangladesh may be classified into three distinct regions: (A) floodplains, (B) terraces, and (C) hills each having distinguishing characteristics of its own. For detailed physiography, the country has been divided into 24 sub-regions and 54 units. Major regions and sub-regions are...If you want to get a full essay, order it on our website: Orderessay



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