: geological structural features as a whole
a : a branch of geology concerned with the structure of the crust of a planet (as earth) or moon and especially with the formation of folds and faults in it
b : tectonism
First Known Use of TECTONICS
tectonics (Concise Encyclopedia)
Scientific study of the deformation of the rocks that make up the Earth's crust and the forces that produce such deformation. It deals with the folding and faulting associated with mountain building; the large-scale, gradual, upward and downward movements of the crust; and sudden horizontal displacements along faults. Other phenomena studied include igneous processes and metamorphism. The chief working principle of tectonics is the concept of plate tectonics. See also continental drift; seafloor spreading.
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