Reference work entry
A surge tuff is a tuff that is formed by a vapour magmatic eruption caused by the interaction of magma or magmatic heat with cold water (including groundwater and surface water). A base surge tuff is also known as a swell deposit tuff. Typical examples can be found on Yanghua Ridge in Haikou, Hainan Province, and Weizhou Island in Beihai, Guangxi Province, where extensive bedding or sinking fallen rock structures are present (Fig. 51).
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