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Figure F207. Dramatic increase in intensity and grade of alteration in basalt of Unit 1256D-78. A. Intersertal to radiate primary texture (Thin Section 36; Sample 312-1256D-196R-1, 32–33 cm) (field of view [FOV] = 2.4 mm; plane-polarized light). B. Similar texture with overprint of isolated secondary clinopyroxene grains (Thin Section 39; Sample 312-1256D-198R-1, 45–49 cm) (FOV = 1.2 mm; plane-polarized light). C. Patchy granular secondary clinopyroxene with interstitial secondary plagioclase and oxides (upper part of image) has completely overprinted earlier secondary actinolite (lower part of image) (Thin Section 39; Sample 312-1256D-198R-1, 45–49 cm) (FOV = 0.6 mm; plane-polarized light).

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