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Submergent Coastlines Overview

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Questions and Answers

Which of the following landforms are found on submergent coastlines? (Select all that apply)

Cliffs

Dalmatian coasts (correct)

Fjords (correct)

Rias (correct)

What defines Dalmatian coasts?

Drowned river valley, islands parallel to the coast, caused by sea level rise, peninsulas parallel to the coast, e.g., Croatian coast.

What are the characteristics of fjords?

Drowned glacial valleys with steep valley sides, caused by sea level rise, stepped long profile, e.g., Norway and SW New Zealand.

How would you describe rias?

<p>Drowned river valleys with shallow valley sides, caused by sea level rise, smooth long profile, e.g., Devon, Cornwall, and Fowey Estuary.</p> Signup and view all the answers

What is the distinction between emergent and submergent coastlines?

<p>Emergent coastlines are areas that were once in the tidal zone but are now above it, whereas submergent coastlines are new areas created by a rise in sea level relative to the land.</p> Signup and view all the answers

Study Notes

Submergent Coastlines

Rias: Formed from drowned river valleys, characterized by a smooth long profile. Examples include Devon, Cornwall, and Fowey Estuary.
Fjords: Created by drowned glacial valleys, featuring steep valley sides and a stepped long profile. Notable examples are found in Norway and southwestern New Zealand. Formed as ice flows deepen valleys while eroding the rock.
Dalmatian Coasts: Characterized by islands that run parallel to the coastline, originating from drowned river valleys. Result of sea level rise, with notable examples along the Croatian coast.

Emergent vs. Submergent Coastlines

Emergent Coastlines: Areas formerly submerged in the tidal zone that have become elevated above sea level.
Submergent Coastlines: Newly formed coastal areas created due to rising sea levels in relation to land, leading to the flooding of existing landforms.

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Description

Explore the fascinating features of submergent coastlines, including rias, fjords, and Dalmatian coasts. Learn how these coastal formations are shaped by sea level rise and their geological significance. Understand the differences between emergent and submergent coastlines through comparative examples.