Figure F29. Abundance of Ti vs. Zr showing a near-linear trend for most of the lavas from Detroit Seamount. The slope of this trend defines a Ti/Z ratio of 92 ± 7, close to the primitive mantle estimate of 116 (Sun and McDonough, 1989). Basalt from Suiko Seamount defines a similar trend (data from M. Regelous et al., unpubl. data). Site 884 lavas and the two picrites from Site 1203 have the lowest abundances, and the alkalic basalt from Site 1203 has the highest abundances of Ti and Zr. Basalt from Hole 1204A and Subunits 2b and 2c of Hole 1204B are close to the field for Site 883 lavas, but Site 883 lavas have slightly lower Zr contents. Relative to Site 883 lavas, basalt from Units 1, 2a, and 3 of Hole 1204B has slightly higher Ti and Zr.

Figure F29. Abundance of Ti vs. Zr showing a near-linear trend for most of the lavas from Detroit Seamount. The slope of this trend defines a Ti/Z ratio of 92 ± 7, close to the primitive mantle estimate of 116 (Sun and McDonough, 1989). Basalt from Suiko Seamount defines a similar trend (data from M. Regelous et al., unpubl. data). Site 884 lavas and the two picrites from Site 1203 have the lowest abundances, and the alkalic basalt from Site 1203 has the highest abundances of Ti and Zr. Basalt from Hole 1204A and Subunits 2b and 2c of Hole 1204B are close to the field for Site 883 lavas, but Site 883 lavas have slightly lower Zr contents. Relative to Site 883 lavas, basalt from Units 1, 2a, and 3 of Hole 1204B has slightly higher Ti and Zr.