Figure F18. Core section images of Sections (A) 324-U1347A-13R-7 and (B) 15R-1, (C, D, E) close-up photographs, and (F, G, H, I) photomicrographs of the upper and lower crusts of a massive submarine flow in Unit V, Hole U1347A. The core scan shows folded upper crust of basaltic glass and hypocrystalline basalt. The folded crust in C is sideromelane with plagioclase and clinopyroxene, with increasing amounts of plagioclase and Fe-Ti oxide spherulites moving out of the glassy margin. Dashed yellow lines indicate folds in the glassy crust revealed by texture, color, and fine cracks. The rock in D contains a good example of a fold in glassy crust. Close-up photograph locations of C, D, and E are indicated by red boxes in A and B. Red box in E indicates photomicrograph location in F, G, H, and I. Width of the field of view in photomicrographs is ~2.5 mm. All photomicrographs are under plane-polarized light. cpx = clinopyroxene, plag = plagioclase.
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