Fig. 8.

Photomicrographs of microstructures in the crinanite, with pairs of images photographed with plane polarised light and under crossed polars. a, b S82/68, from 120.73 m stratigraphic height. Olivine in this sample is entirely interstitial, forming extensive oikocrysts enclosing plagioclase. Scale bar is 1 mm long. c, d Sample SC1160, from 148.71 m stratigraphic height. Olivine in the upper 10 m of the crinanite is not interstitial but forms irregular clusters with an inverted microstructural progression mirroring that of the upper part of the picrodolerite. Scale bar is 1 mm long