Fig. 1: Location of IODP expeditions 351 (U1438) and 352 (U1439-42) drill sites, stratigraphy of U1438, bulk rock and mineral characteristics of Unit 1 at Site U1438. | Nature Communications

Fig. 1: Location of IODP expeditions 351 (U1438) and 352 (U1439-42) drill sites, stratigraphy of U1438, bulk rock and mineral characteristics of Unit 1 at Site U1438.

From: Basalt derived from highly refractory mantle sources during early Izu-Bonin-Mariana arc development

Fig. 1

a Bathymetric map65 showing the location of Amami-Sankaku Basin and Site U1438 (red star) adjacent to the Kyushu-Palau Ridge (remnant arc), and sites U1439-42 (black star; Expedition 352) in the present-day fore-arc. Figure made with GeoMapApp (www.geomapapp.org). b Unit thicknesses and ages at Site U1438. Units are coloured for visualisation. c subunit information for Unit 1 including Mg number (100∗Mg/(Mg+Fe2+)) of clinopyroxene (green circles), anorthite content (An%) of plagioclase (orange diamonds), and bulk rock 100∗Mg/(Mg + ΣFe) (dark green squares) versus depth. Colours of subunits are also used in all other figures (main text and supplementary).

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