Structural geology of a classic thrust belt earthquake:
                        the 1999 Chi-Chi earthquake Taiwan (Mw=7.6)

                                              Jian-Sheng Yin

                                           Abstract

                 The 1999 Chi-Chi earthquake is one of the best-instrumented thrust-belt
              earthquakes. The main surface break and large slip (3–10 m) is on two
              segments of the shallow otherwise aseismic bedding parallel
              Chelungpu–Sanyi thrust system, which shows nearly classic ramp-flat
              geometry with shallow detachments (1–6 km) in the Pliocene Chinshui
              Shale and Mio-Pliocene Kueichulin/Tungkeng Formations.
                 These structural models have been developed using standard structural
              geologic techniques based on surface geology, seismic lines, well data and
              balancing concepts and are largely independent of geodeticand seismologic
              data from the Chi-Chi earthquake and its aftershock sequence. These
              structural models provide a framework that allows us to assimilate the
              geodetic and seismologic data into a more realistic image of this classic
              thrust-belt earthquake than is provided by normal earthquake studies alone.
              In particular, we have shown that details of the coseismic displacement
              fields determined from geodesy and seismology correlate significantly with
              fine details of the 3D fault map of the Chelungpu thrust and that to first
              order the displacement vectors are parallel to the fault.

                                          Reference

              Li-Fan Yue, John Suppe, Jih-Hao Hung, 2005. Structural geology of a classic 
              thrust belt earthquake: the 1999 Chi-Chi earthquake Taiwan (Mw=7.6). Journal 
              of Structural Geology Volume: 27, Issue: 11, November, 2005, pp.2058-2083. 

                                           (Abstract)(Full text)

              Kaj M. Johnson, Paul Segall, 2004. Imaging the ramp–de’collement geometry 
              of the Chelungpu fault using coseismic GPS displacements from the 1999 Chi-Chi,
              Taiwan earthquake. Tectonophysics. 378, 123– 139. 

                                           (Abstract)(Full text)