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PART -1

About this book….

This book is a comprehensive product on the geomorphology of sea coast. The book explains various landforms and geomorphic processes occur on a coastal scenario. The learning activities relentless enquiries, and critical thinking will help you to open the window of knowledge.

COASTAL GEOMORPHOLOGY

Content • Introduction

• Sea Cliffs • Sea Stack • Beaches

KEY POINTS ❖Waves ❖Erosion ❖Deposition ❖Sea Cliffs ❖Sea stacks ❖Beaches

Coastal Scenario Coastal landforms are created by the erosional and depositional processes carried out by waves.

Let us take a look at some landforms along coastlines.

SEA CLIFFS

The steep hillocks facing the sea are called Sea Cliffs. These steep structures are formed by the crumbling of the sea-facing slopes due to wave erosion.

The Varkala Cliff, Thiruvananthapuram

Sea Cliffs

SEA STACKS

The strong blast of sea waves on the rocky coasts cause the wearing down of rocks. As a result of such abrasion by waves, isolated rock pillars are formed from coastal rocks. Such pillar rocks standing upright along the coastline are called Sea Stacks.

Sea Stacks of Thalasseri Beach, Kannur

How do these stacks withstand the strong wave erosion? --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

BEACHES

Beaches are formed s a result of the deposition by waves. Beaches are depositional landforms along the coastlines formed with sand, gravel, etc.

You might be aware of the tourism prospects of a few prominent beaches in Kerala

Kovalam

Varkala

Cherai

Kozhikode

Shanghumugham

Now, add the other beaches of tourism importance to the above list.

LET US ASSESS

❖Coastal landforms are formed by the geomorphic action of waves.

❖Sea cliffs and Sea stacks are the landforms created by wave erosion. ❖Beaches are the depositional landforms by waves.

Extended activities • Collect pictures of sea cliffs and sea stacks around the world and add them in your Geography album. • Locate the famous beaches in India and mark it on the physical map of India.

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