The deepest reflection seismic profile in the Taipei Basin

                                                         Yu-Wen Chen

                                                   Abstract

                       Taipei city,the capital of Taiwan,is located in the Taipei basin.Over the 10
                     years,the Central Geological Survey has conducted a wide-range of investigations of 
                     the Taipei basin by drilling over 30 wells.During the same period,we have also 
                     scanned the basin area using over 300 shallow reflection seismic line.The purpose of 
                     this paper is to compile these seismic data,incorporating it with the borehole drilling 
                     results,to better describe the Tertiary basement,the Quaternary layers above the 
                     basement and their P-and S-wave velocities,the deepest part of the basin basement is 
                     probably at the outlet of the Tanshui river,the Kanchiao fault forms a separation 
                     boundary bisecting the basin basement the basin into a deep NW part and a shallow 
                     SE part, the sharp of basement implies the Sanchiao fault may be long enough to 
                     penetrate under the Tatun volcanic regin in the north,the depth of the Sungshan 
                     fotmation form 50 to 120 meter and the S-wave velocity is about 120-135m/sec.
                     The S-wave velocity of the Chingmei formation is 450m,and S-wave velocity of the 
                     basement is 1000m/sec. 

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                     Wang,C. Y., W. C. Hsiao, and C. T. Sun,1994:Reflection seismic stratigraphy in Taipei 
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                                                    (Abstract)(Full text)

                     Wang,C. Y.,Y.L.Tsai,and M.L.Ger,1995:Reflection seismic stratigraphy in Taipei 
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                                                    (Abstract)(Full text)

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