Deposition: GCSE Geography Definition

Bridgette Barrett

Written by: Bridgette Barrett

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What is deposition?

In GCSE geography, deposition is generally defined as the process where material, such as sand, silt, or rocks, is dropped or left behind by a river, glacier, waves or wind. When the force carrying the material weakens or loses energy, it can no longer transport the sediment. This leads to deposition. 

Deposition is responsible for forming new landforms. In rivers, deposition processes lead to the formation of:

  • Slip off slopes

  • Deltas

  • Levees

  • Floodplains 

Diagram showing river valley evolution: meander migration widens valley, sediment layers form levees, floodplains develop from sediment deposition.
Formation of levees

At the coast, deposition forms: 

  • Beaches

  • Sand dunes

Diagram illustrating sediment layers on a beach: beach berm with shingle, coarse sand, fine sand, and mud, reaching the low water mark.
Deposition of sediments on a beach

 In a glacial landscape, deposition forms:

  • Moraines

  • Drumlins

Diagram illustrating types of moraines: terminal at the glacier's end, lateral along the sides, and medial in the glacier's centre.
Types of Moraines

An example of the deposition process occurs as a river slows down near its mouth. It drops the sediment it has been carrying, creating a fan-shaped delta. This process helps build up land over time and alters the landscape.

Deposition Revision Resources to Ace Your Exams

Use the Save My Exams coastal landscapes flashcards and exam questions to revise the process of deposition and related processes.

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Bridgette Barrett

Author: Bridgette Barrett

Expertise: Geography Lead

After graduating with a degree in Geography, Bridgette completed a PGCE over 25 years ago. She later gained an MA Learning, Technology and Education from the University of Nottingham focussing on online learning. At a time when the study of geography has never been more important, Bridgette is passionate about creating content which supports students in achieving their potential in geography and builds their confidence.

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