Two elastic models for the development of residual stresses due to cooling in rock bodies are presented. The first describes the ''locking in'' of stresses on grain-to-grain (microstructural) scale and the second describes the locking in of stresses on a macrostructural scale. Application of the microstructural model to uniform cooling of solid granite from 300¿C to 0¿C leads to a self-equilibrating stress field and an average volumetric residual strain of -7050¿10-6. Application of the macrostructural model to the cooling from 300¿C to 0¿C of an idealized granite pluton surrounded by metasedimentary country rock leads to residual radial and hoop stresses of -232¿105 Pa in the granite and residual radial and hoop stresses of -232 and 116¿105 Pa in the metasediment at its contact with the granite. |