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Tuff ring is a type of volcanic landform that forms when magma interacts explosively with groundwater or surface water, resulting in a series of explosive eruptions. This process typically occurs in a wet environment, leading to the formation of a ring-shaped structure around the vent.
Tuff rings are usually made up of volcanic ash, tephra, and other pyroclastic materials that are ejected during eruptions. They can vary in size and shape but generally feature a low-profile circular or oval rim surrounding a central crater.
These geological formations are often found in areas with volcanic activity and can provide valuable insights into the eruption history and the local geology. Tuff rings are distinct from other volcanic structures like tuff cones, which are more steep-sided and have a narrower base.