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Progress in Earth and Planetary Science
Fig. 4 | Progress in Earth and Planetary Science

Fig. 4

From: Spatial and temporal variations in depositional systems in the Kazusa Group: insights into the origins of deep-water massive sandstones in a Pleistocene forearc basin on the Boso Peninsula, Japan

Fig. 4

Stratigraphic cross-section and sequence-stratigraphic classification of the Kokumoto Formation. The oxygen isotopic data are from Pickering et al. (1999) and are adjusted to stratigraphic section 7. The inset map shows the locations of the measured sections. Ku6–Ka2.6 denote the coding of tephra key beds. The filled red circle on the right side of section 2 indicates a stratigraphic horizon approximately 110 cm above the Byakubi tephra key bed (Byk) (Byk-E in Suganuma et al. 2018) that is inferred to represent the Lower–Middle Pleistocene Subseries boundary. See Fig. S1 for the stratigraphic positions of SB12 and SB13 within the Kazusa Group

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