Relative paleointensity of the geomagnetic field during the past 0.8 Ma from Nihewan Basin, Hebei Province, China
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We conducted a detailed rock magnetic study on upper 80 m of Jing’erwa core from the Nihewan basin. The results indicate that the sediments from Jing’erwa core are suitable for relative paleointensity study, and anhysteretic remanent magnetization (ARM) can be used as the normalization parameter of the natural remanent magnetization (NRM). Our relative paleointensity data of upper 80 m of Jing’erwa 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 relative paleointensity of Earth’s magnetic field, and suggests that these sediments have recorded the real changes of geomagnetic field, which would provide a new method for regional stratigraphic correlation.
KeywordsNihewan basin earth’s magnetic field relative paleointensity
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- 3.Barbour, G. B., preliminary observation in Kalgan alea, Bull. Geol. Soc. China, 1924, 3(2): 153–167.Google Scholar
- 4.Li, H. M., Wang, J. D., Study on the magnetic polarity stratigraphy of Nihewan Beds, in Institute of Geochemical, China Academy of Science. Annual Reports of the Institute of Geochemical, China Academy of Sciences, 1982–1983 (in Chinese), Guiyang: Guizhou People’s Publishing House, 1984, 182–183.Google Scholar
- 5.Yuan, B. Y., Zhu, R. X., Tian, W. L. et al., The age, stratigraphic division and correlation of Nihewan Formation, Science in China, Series D (in Chinese), 1996, 26(1): 67–73.Google Scholar
- 6.Min, L. R., Chi, Z. Q., Zhu, G. X., Division of Quaternary Lacustrine Beds in Jing’erwa Bolehole of the Yangyuan Basin, Acta Geologica Simca (in Chinese), 2000, 74(2): 108–115.Google Scholar
- 15.Zhu, R. X., Guo, B., Ding, Z. L. et al., Gauss-Matuyama polarity transition obtained from a loess section at Weinan, north-central China, Acta Geophysica Sinica (in Chinese), 2000, 43(5): 621–634.Google Scholar