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Geologic Structure

Sources:    Time:2013-06-06

      Crustal movements cause the curving and deformation of terrane, result in fracturation, and leave over permanent traces, and thus geologic structures are formed. The most common geologic structures include folding and faulting.  

      Geologic structure is related to the direction of the crustal movement. Horizontal tectonic movement makes rocks separated and fractured, or makes them converge and causes compression, bending or thrust and stagger. Vertical tectonic movement makes boundary rock masses rise or drop in different directions. The scale of geologic structure can be as wide as over 1000 km, which needs to be identified by comprehensive analyses of geologic and geophysical information and interpretation of remote sensing information, such as the structure of lithospheric plate. It can be as small as a millimeter or even micron, which needs to be observed with optical microscope or electron microscope, such as the deformation of mineral crystalloid and the dislocation of crystalline lattice.