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Progress in Earth and Planetary Science
Fig. 8 | Progress in Earth and Planetary Science

Fig. 8

From: A record of the upper Olduvai geomagnetic polarity transition from a sediment core in southern Yokohama City, Pacific side of central Japan

Fig. 8

Comparison between Cores I and M in the vicinity of the upper Olduvai polarity reversal. Lithofacies, volume magnetic susceptibility (κ), and oxygen isotope fluctuations based on measurements in Globorotalia inflata (δ18O) and in situ paleomagnetic inclinations are shown in a–d for Core I and e–h for Core M, respectively. i Correlation of the peaks of the magnetic susceptibility between the two cores, using the depths from Core M. j Correlation of in situ paleomagnetic inclinations between the two cores, using the same depth as i. k The LR04 benthic δ18O stack (Lisiecki and Raymo 2005). Abbreviations shown on the lithology columns are the following: m mudstone (mud content ≥70 %), sm sandy mudstone (70 % > mud content ≥ 45 %), fs fine-grained sandstone, ft fine tuff, ct coarse tuff, pt pumice-rich lapilli tuff. For the red lines, see the text

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