|
|
| Simon, Quentin; Bourles, Didier L.; Thouveny, Nicolas; Horng, Chorng-shern; Valet, Jean-pierre; Bassinot, Franck; Choy, Sandrine. |
| Long-term variations of the geomagnetic dipole moment (GDM) during periods of stable polarity and in transitional states (reversals and excursions) provide key information for understanding the geodynamo regime. Following several studies dealing with the Brunhes chron and the Matuyama–Brunhes transition, this study presents a new authigenic 10Be/9Be ratio (Be-ratio) record obtained from the MD97-2143 core (western Pacific Ocean). This new Be-ratio series yields a record of GDM variations covering the early Brunhes and mid to late Matuyama time period (i.e. 700–2140ka), independently from the relative paleointensity (RPI) record obtained from the same core, that can be compared with available RPI records and stacks. Stratigraphic offsets measured between... |
| Tipo: Text |
Palavras-chave: Authigenic Be-10/Be-9 ratios; Matuyama-Brunhes transition; Jaramillo and Olduvai subchrons; Cobb Mountain and Reunion events; Matuyama geomagnetic excursions; Lock-in depth. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00414/52553/53381.pdf |
| |
