The Physical Environment
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Ocean and Coastal Systems

Emergent Coasts

Emergent coasts are a result of forces acting to raise the land swave-cut terracesurface or drop sea level. The incredible weight of massive ice sheets during the the Pleistocene depressed the continental surfaces beneath them. The continents began to rebound as the ice melted and released the overlying pressure. The rising surface lifted the shoreline above sea level forming glacial uplift coasts along continental margins.

Figure 21.20 Wave-cut terraces on San Clemente Island, California.
Courtesy USGS (Source)

Raised shorelines and erosional features like wave cut terraces are also found along tectonic coasts where endogenic forces have uplifted the surface. Such coasts are common along the mountain and island arcs of the Pacific Ocean.

 

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For Citation: Ritter, Michael E. The Physical Environment: an Introduction to Physical Geography.
Date visited.  ../title_page.html

Michael Ritter (tpeauthor@mac.com)
Last revised 1/22/14

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