Cauldron subsidence is the sinking of an approximately cylindrical portion of the roof of a magma chamber along “ring-faults,” sometimes accompanied by squeezing up of magma along the fault to form a “ringdike.” Also the structure so formed. A.G.I. Glossary.
As presently used, the term cauldron subsidenceincludes all subsidence structures of volcanic origin regardless of size or shape, depth of erosion, or connection with surface volcanism (Smith and Bailey, 1968, p. 616). The rocks involved in cauldron subsidences usually consist of one or more intrusive igneous pluton and a sampling of sedimentary, metamorphic, and volcanic rocks into which the plutons were emplaced. Cauldron subsidences (i.e., downfaulted ring-fracture-delineated masses) are to be distinguished from calderas (i.e., more or less circular depressions in the Earth's surface that are connected with volcanism). However, the two may be products of the same volcanic activity. Although the ring faults that bound cauldron...
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Vitaliano, C.J. (1987). Cauldron subsidence . In: Structural Geology and Tectonics. Encyclopedia of Earth Science. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-31080-0_10
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