Post-depositional remanent magnetization lock-in and the location of the Matuyama–Brunhes geomagnetic reversal boundary in marine and Chinese loess sequences
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چکیده
Article history: Bioturbation disturbs detri Received 9 January 2008 Received in revised form 26 July 2008 Accepted 6 August 2008 Available online 18 September 2008 Editor: M.L. Delaney
منابع مشابه
Why are geomagnetic excursions not always recorded in sediments? Constraints from post-depositional remanent magnetization lock-in modelling
Many geomagnetic excursions have been documented during the Brunhes Chron. However, high-resolution paleomagnetic studies of sediments often provide evidence of few (if any) excursions. We have investigated the reasons for this observation by modelling the post-depositional remanent magnetization (PDRM) lock-in process. A cubic lock-in function produces more rapid lock-in compared to linear and...
متن کاملA detailed paleomagnetic and rock-magnetic investigation of the Matuyama-Brunhes geomagnetic reversal recorded in the tephra-paleosol sequence of Tlaxcala (Central Mexico)
Citation: Soler-Arechalde AM, Goguitchaichvili A, Carrancho Á, Sedov S, Caballero-Miranda CI, Ortega B, Solis B, Morales Contreras JJ, Urrutia-Fucugauchi J and Bautista F (2015) A detailed paleomagnetic and rock-magnetic investigation of the Matuyama-Brunhes geomagnetic reversal recorded in the tephra-paleosol sequence of Tlaxcala (Central Mexico). Front. Earth Sci. 3:11. doi: 10.3389/feart.201...
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A detailed paleomagnetic study conducted in the Sangiran area, Java, has provided a reliable age constraint on hominid fossil-bearing formations. A reverse-to-normal polarity transition marks a 7-m thick section across the Upper Tuff in the Bapang Formation. The transition has three short reversal episodes and is overlain by a thick normal polarity magnetozone that was fission-track dated to th...
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Geomagnetic dipole moment variations associated with polarity reversals and excursions are expressed by large changes of the cosmogenic nuclide beryllium-10 (10Be) production rates. Authigenic 10Be/9Be ratios (proxy of atmospheric 10Be production) from oceanic cores therefore complete the classical information derived from relative paleointensity (RPI) records. This study presents new authigeni...
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Magnetic Susceptibility) contains new anisotropy of magnetic susceptibility (AMS) data for selected samples from drill hole OL-92. The data were obtained from depth intervals that in earlier publications were interpreted to span several paleomagnetic excursions. Preliminary interpretation of the AMS results indicates that the high dispersion of the paleomagnetic directions within these interval...
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تاریخ انتشار 2008