Aseismic ridge

The Walvis ridge, an aseismic ridge

An aseismic ridge is "a long, linear and mountainous structure that crosses the basin floor of some oceans." They do not cause earthquakes.[1]

It is called an "aseismic ridge" because they do not receive seismic activity. As a result, they tend to be stable. They are 700–5,000 kilometers (430–3,110 mi) in length.[2]

Aseismic ridges going towards subduction zones can impact the process of subduction, causing a phenomenon known as flat slab subduction.[3]

Examples

Atlantic Ocean

Indian Ocean

Pacific Ocean

See also

References

  1. ^ "Aseismic ridge | Geology, Plate Tectonics & Oceanic Crust | Britannica". www.britannica.com. Retrieved 2025-09-27.
  2. ^ Hekinian, R., ed. (1982-01-01), "Chapter 3 Aseismic Ridges", Elsevier Oceanography Series, Petrology of the Ocean Floor, vol. 33, Elsevier, pp. 141–176, retrieved 2025-09-27
  3. ^ Zhao, Hui; Leng, Wei (2023-03-08). "Aseismic ridge subduction and flat subduction: Insights from three-dimensional numerical models" (PDF). Earth and Planetary Physics. 7 (2): 269–281. doi:10.26464/epp2023032. ISSN 2096-3955.
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