Explores the composition and formation of andesites and related volcanic rocks in tectonic settings, indicating their geologic significance.
Andesites are volcanic rocks with an intermediate silica content. They are a feature of mountain chains like the Andes, from which the name is derived, and island arcs. Andesite and its associates, such as basalt, dacite and rhyolite (which belong to the so‐called calc‐alkaline rock series), occur in zones where tectonic plates are subducting (converging, so that one plate is forced down under its opponent).
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Kent Brooks (2026) studied this question.
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