地球内部过程 Geologic Tectonics Folds In similar(shear) folds all layers are deformed to a similar shape, and the bed thicknesses are constant in Overmoded a direction parallel to the axial plane. This produces an increase of true thickness at the hinges andm a decrease on the limbs similar HEp' folds are produced by differential movements along minor shear planes in a direction parallel to the axial plane. Intense folding of metamorphic变质 rocks at a time when temperature and pressure were high is usually of this type Conce 环境迪顶学 minoucntalocelogu ,率地球内部过程 Geologic Tectonics • Folds In similar (shear) folds all layers are deformed to a similar shape, and the bed thicknesses are constant in a direction parallel to the axial plane. This produces an increase of true thickness at the hinges and a decrease on the limbs. Similar folds are produced by differential movements along minor shear planes in a direction parallel to the axial plane. Intense folding of metamorphic变质 rocks at a time when temperature and pressure were high is usually of this type