Figure F29. A, B. Photomicrographs of unaltered spherulites, Hole U1350A (Thin Section 269; Sample 324-U1350A-8R-1, 133–135 cm). C, D. Photomicrographs of altered spherulites (Thin Section 320; Sample 324-U1350A-25R-8, 26–29 cm). A and C are under plane-polarized light; B and D are under reflected light.
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