The relationship between seismic wave velocity and geologic time in sedimentary basin
沉积盆地中地震波速度与地层年代的关系

Dating is an important subject in geological research. The geologic dating methods face some different difficulties . Consequently, in this study, a new geophysical method is used to do the dating research in Chinese continental sedimentary basins. Based on the methods of statistics, fitting and scanning, the relations of velocities, depths and ages in basins were investigated and a new method to determine absolute ages was proposed. According to the formula, the range of sedimentary basement age is also determined and compared with the results by isotopic methods. The result shows the formula also can be used to determine the range of sedimentary basement ages. Errors may be brought because China continental sedimentary basins are thought as one tectonic unit.