Here are some key characteristics of a guyot:
* Formation: Formed by volcanic activity, often as shield volcanoes, rising from the ocean floor.
* Erosion: Over time, these volcanoes are eroded by waves and currents, especially during periods of lowered sea levels.
* Flat Top: This erosion creates the flat, often circular, top of the guyot.
* Steep Sides: The sides of the guyot remain relatively steep, reflecting the original volcanic slopes.
* Size: Guyots can range in size from a few kilometers to over 100 kilometers in diameter.
* Depth: They are typically found at depths of 1,000 meters or more below sea level.
They are important geological features:
* Evidence of Past Volcanic Activity: They provide valuable insights into past volcanic activity and the evolution of the ocean floor.
* Habitat for Marine Life: Guyots often support unique and diverse marine ecosystems, providing a habitat for various species.
* Study of Plate Tectonics: The distribution of guyots can be used to understand plate movements and the history of the ocean basins.
The name "guyot" comes from the American geologist Arnold Henry Guyot, who first described these features in the 19th century.