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Figure F106. Sample 305-U1309D-183R-2, 32–34 cm. A. Whole thin section (plane-polarized light; field of view [FOV] = 2 cm). B. Oxide-rich shear zone (cross-polarized light; FOV = 2 cm). C. Extreme grain size reduction in the oxide-rich zone of the shear zone. Cathodoluminescence imaging using the Mainz CL-EDX device revealed that ~30% of all the dark to bright gray clasts in the shear zone are apatite. D. Approximately 30% of the white-gray minerals are apatite, showing oxide replacing a coarse host-gabbro clinopyroxene at the contact. E. Apatite-rich part of C.

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