A Paleomagnetic Study of Deep-Sea Cores from the KODOS-90 Area in the North Pacific

북태평양 KODOS-90 지역 심해저 퇴적물의 고지자기 연구

  • 도성재 (고려대학교 지구환경과학과) ;
  • 박찬호
  • Published : 1996.04.01
  • 51 0


A paleomagnetic study was carried out on three gravity cores recovered from the KODOS-90 area in the North Pacific to obtain a magnetostratigraphic information and to correlate the magnetic records between cores. The sediments bear a stable remanent magnetization and the polarity sequence of the three cores can be correlated with the gomagnetic polarity time scale for the Plio-Pleistocene. The abrupt change in the magnetic susceptibility profile at 285 cm depth of the gravity core 26 indicates the presence of a major hiatus. The average sedimentation rates of the gravity cores 08 and 26 are about 2.7 and 1.4 times higher than that of the gravity core 20 (0.09 cm/100yr), respectively.