FLUVIAL LANDFORMS Ambiliy P R Assistant Professor Department

FLUVIAL LANDFORMS Ambiliy P R Assistant Professor Department of Geography

n n The geomorphic agents acting over long periods of time produce systematic changes leading to sequential developments of landforms Running water, ground water glaciers, wind and waves are powerful erosional and depositional agents shaping and changing the surface earth aided by weathering and mass wasting processes

n RUNNING WATER IS THE MOST IMPORTANT GEO MORPHIC AGENTS IN BRINGING ABOUT THE DEGREDATION OF THE LAND SURFACE

RIVER PROFILE

Stages of a river n n n Upper course- Youthful Middle course-mature Lower course-Old

Erosional landforms n n n n n Gorge Canyon V-shaped valleys Rapids Waterfalls Potholes Plunge pools Incised meanders River terraces

A Gorge It is a deep valley with very steep to straight sides

CANYON A canyons is characterized by steep step-like Side slope and may be as deep as a gorge.

V SHAPED VALLEYS

RAPIDS

WATER FALLS

POTHOLES . . 20091212124944. mpg

PLUNGE POOLS

MEANDERS Meanders Loop like channel patterns called meanders develop over flood and delta plains.

RIVER TERRACES

DEPOSTIONAL LAND FORMS n n n n ALLUVIAL FANS NATURAL LEVEES FLOODPLAINS POINT BARS MEANDERS BRAIDED CHANNELS DELTAS

ALLUVIAL FANS

NATURAL LEVEES

FLOOD PLAINS

POINT BARS

DELTA

THANKS Ambily P R Asst. Prof in Geograpy N S S College Pandalam