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Progress in Earth and Planetary Science
Fig. 9 | Progress in Earth and Planetary Science

Fig. 9

From: A paleomagnetic record of the early Matuyama chron including the Réunion subchron and the onset Olduvai boundary: High-resolution magnetostratigraphy and insights from transitional geomagnetic fields

Fig. 9

VGP paths and horizontal plots of the VGP latitude and RPI covering the Olduvai bottom reversal of this study correlated with a North Atlantic record. a–c Show the results of this study. d–f Show the results from ODP Site 984 (Channell et al. 2002, 2013a, 2013b). Letters “A” to “C” in (a) and (b) and (d) and (e) indicate the locations of the characteristic VGP clusters identified on (a) and (d), respectively. The blue shaded areas in (a) and (d) indicate that the vertical component of the NAD field at the Earth’s surface is less than − 15 μT (Constable 2007). The yellow stars indicate the sample/core sites. The green dashed line in (c) indicates the average RPI value for the entire interval of this study. The red square shows the site mean value at a site in (a) and (b) if multiple ChRMs are available at a site. The grey circle in (a) and (b) shows a single value used to deduce a site-mean value, while the red circle in (a) and (b) shows a representative value at a site if a single ChRM is only available at a site. The lines are connected among the red squares or the red circles

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