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Relative paleointensity of the geomagnetic field during the past 0.8 Ma from Nihewan Basin, Hebei Province, China 被引量:3

Relative paleointensity of the geomagnetic field during the past 0.8 Ma from Nihewan Basin, Hebei Province, China
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摘要 We conducted a detailed rock magnetic study on upper 80 m of Jing抏rwa core from the Nihewan basin. The results indicate that the sediments from Jing抏rwa core are suitable for relative paleointensity study, and anhyster-etic remanent magnetization (ARM) can be used as the nor-malization parameter of the natural remanent magnetization (NRM). Our relative paleointensity data of upper 80 m of Jing抏rwa core provide a continuous record of the intensity variation during the last 0.8 Ma, which correlates well with the results from marine sediments cores in the Pacific Ocean. This means that the sediments records are reliable for rela-tive paleointensity of Earth抯 magnetic field, and suggests that these sediments have recorded the real changes of geo-magnetic field, which would provide a new method for re-gional stratigraphic correlation. We conducted a detailed rock magnetic study on upper 80 m of Jing抏rwa core from the Nihewan basin. The results indicate that the sediments from Jing抏rwa core are suitable for relative paleointensity study, and anhyster-etic remanent magnetization (ARM) can be used as the nor-malization parameter of the natural remanent magnetization (NRM). Our relative paleointensity data of upper 80 m of Jing抏rwa core provide a continuous record of the intensity variation during the last 0.8 Ma, which correlates well with the results from marine sediments cores in the Pacific Ocean. This means that the sediments records are reliable for rela-tive paleointensity of Earth抯 magnetic field, and suggests that these sediments have recorded the real changes of geo-magnetic field, which would provide a new method for re-gional stratigraphic correlation.
出处 《Chinese Science Bulletin》 SCIE EI CAS 2004年第9期948-952,共5页
关键词 地磁场 相关古强度 河北 海洋沉积 内河湾盆地 自然残余磁化 Nihewan basin, earth's magnetic field, relative paleoin-tensity.
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