Figure F44. The graded volcaniclastic sandstone (Unit 31) contains a variety of submillimeter angular fragments including glassy (G), porphyritic (P), and perlitic (arrow) clasts (Sample 193-1189B-17R-2 [Piece 19, 98-100 cm] in plane-polarized light; width of view = 5.5 mm. Photomicrograph ID# 1189B

Figure F44. The graded volcaniclastic sandstone (Unit 31) contains a variety of submillimeter angular fragments including glassy (G), porphyritic (P), and perlitic (arrow) clasts (Sample 193-1189B-17R-2 [Piece 19, 98-100 cm] in plane-polarized light; width of view = 5.5 mm. Photomicrograph ID# 1189B_67; thin section 139).