Figure F20. Core images (dry) showing styles of magmatic layering and foliation in the Layered Series, Hole U1415J and U1415P. A. Simple, centimeter-scale modal layering with an olivine-bearing gabbronorite layer between a troctolite layer at the top and a second, thin troctolite layer in turn overlying an olivine-bearing gabbro layer at the bottom. Olivine-plagioclase magmatic foliation is also shown (Sample 345-U1415J-5R-2 [Piece 1, 2.0–17.5 cm]). B. Simple, centimeter-scale modal layering consisting of a 2 cm thick olivine-bearing gabbro layer within a clinopyroxene oikocryst-bearing troctolite layer (Sample 345-U1415J-8R-2 [Piece 9, 105.5–121.0 cm]). C. Diffuse, subvertical (in the core reference frame) layering orthopyroxene-bearing olivine gabbro (Sample 345-U1415P-8R-2 [Piece 1, 0–16 cm]).
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