Figure F1. Ternary composition plot (in weight percent) for Leg 193 semimassive sulfides (black squares; two samples at the Fe apex) compared with subsamples from Roman Ruins chimneys (open triangles). Open squares are subsamples from the "Bikpela" chimney, also from Roman Ruins. The black triangle is a sand collected by hammer drill from the cased interval of Hole 1189B. Chimney data are from Binns et al. (2002), with some additional analyses.