Figure F29. Photomicrographs showing large resorbed plagioclase grain that is optically discontinuous and cemented by oxide (Sample 209-1275B-19R-1, 135–137 cm) (field of view = 2.75 mm). A. plane-polarized light: blue + dark gray + light gray filters; image 1275B_045. B. cross-polarized light: blue + dark gray filters; image 1275B

Figure F29. Photomicrographs showing large resorbed plagioclase grain that is optically discontinuous and cemented by oxide (Sample 209-1275B-19R-1, 135–137 cm) (field of view = 2.75 mm). A. plane-polarized light: blue + dark gray + light gray filters; image 1275B_045. B. cross-polarized light: blue + dark gray filters; image 1275B_044.