epicontinental sea

geology

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June 26, 2026

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An epicontinental sea is a shallow body of water that covers a significant portion of a continent or continental shelf, while remaining connected to the ocean. These seas are also referred to as shelf seas. They are distinct from deep ocean basins and are characterized by their relatively shallow depths.1234

Historically, large epicontinental seas, such as the Tethys Sea, played a significant role in Earth's paleogeography, separating supercontinents and influencing climate and marine life. The sediments deposited in these seas, often derived from land or marine organisms, are a key focus in geological studies. Understanding epicontinental seas helps in reconstructing past continental positions and geographic features.564

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Cretaceous Period
Paleogeography
…the continents, creating relatively shallow epicontinental seas in North America, South America, Europe, Russia, Africa, and Australia. In addition, all continents shrank somewhat as their margins flooded. At its maximum, land covered only about 18 percent of Earth’s surface, compared with approximately 28 percent today. At times, Arctic waters were…
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…the continents, creating relatively shallow epicontinental seas in North America, South America, Europe, Russia, Africa, and Australia. In addition, all continents shrank somewhat as their margins flooded. At its maximum, land covered only about 18 percent of Earth’s surface, compared with approximately 28 percent today. At times, Arctic waters were…
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Gulf of Carpentaria
…rare modern example of an epicontinental sea (a shallow sea on top of a continent), a feature much commoner at earlier times in the Earth’s geologic history.
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…rare modern example of an epicontinental sea (a shallow sea on top of a continent), a feature much commoner at earlier times in the Earth’s geologic history.
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