Previous   |    Close   |    Next

Figure F38. Thin section photomicrographs of flow alignment in Unit VII. All photomicrographs are oriented with the black arrow pointing to the top of the core. Plagioclase laths have a very steep alignment (red arrows), indicating lava flow in a near-vertical direction. A, B. Sample 330-U1373A-11R-2W, 96–98 cm (Thin Section 104). C, D. Sample 330-U1373A-13R-1W, 32–36 cm (Thin Section 105). E, F. Sample 330-U1373A-13R-3W, 10–12 cm (Thin Section 106). A, C, and E are under plane-polarized light; B, D, and F are with crossed polars.

Previous   |    Close   |    Next   |    Top of page