Finite Strain Analysis on Geology

Basic concept of deformation and strain is described. Strain ellipse and reciprocal strain ellipse are then introduced as the interface between deformation and strain. Mohr's circle is explained as the magnificent tool to obtain axial ratio and direction of axis of strain using graph instead of calculation. Practical techniques in field are described to measure axial ratio and direction of axis of strain. Practical techniques are the methods that use the strain grid, glass shard and fossils. The famous R_f／φ technique is explained that the method is invented from applying the theory of superposition of homogeneous strain