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Fig. 7 | Earth, Planets and Space

Fig. 7

From: Middle Miocene forearc alkaline magmatism in Amami-Oshima Island, central Ryukyu Arc: implications for paleoreconstruction of Shikoku Basin

Fig. 7

40Ar/39Ar ages of basaltic dikes correlated with the geomagnetic polarity timescale. The geomagnetic polarity timescale was obtained from Raffi et al. (2020). Curves indicate the probability density distribution calculated using the averages and standard deviations of the 40Ar/39Ar age of the basaltic dikes. Reddish shaded areas represent probabilities corresponding to the reversed polarity subchrons C5Cn.1r and C5Cn.2r, and the chron of C5Cr

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