The quaternary sediment samples in Pattani and Narathiwat provinces were collected by using the sample corer. The global positioning system (GPS) was used to identify the location of the collected samples. All the collected samples were heated at 120 Y C for 20 hours. The dried samples were also grinded and sorting for the sample size smaller than 1 mm. Each sample was filled in the close system container for one month in order to let the system reach the secular equilibruim. In order to analyze the Ueq in each sample, the gamma ray spectrometer was employed to analyze the 1.76 MeV photopeak that emitted from Bi-214. Under the secular equilibruium, the equivalent uranium content can be analyzed by the above process.

      The result showed that the averaged uranium content in 46 lovations of Pattani province with the 0-5 cms and 5-10 cms depth are 4.09 ppm and 5.11 ppm, respectively. While in the Narathiwat province, with 54 locations of collected sample sites. The analyzed uranium contents at the 0-5 cms and 5-10 cms depth are in value of 4.53 ppm and 5.42 ppm, repectively. The uranium content contour was performed in order to identify some area that may harmful to the human body.